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3.8 3800 Series 2 Engine Diagram

Introduced in 1995, the Series II is quite a different engine. It is also by far the most popular of the 3800 family for its power, smoothness, fuel efficiency, and reliability, although the stroke for the 3.8 liter engine remained at 3.4 in (86 mm), and the bore remained at 3.8 in (97 mm). That said, the engine architecture was vastly changed. The deck height is shorter than the Series I, reducing weight and total engine package size. This required that the piston connecting rods be shortened 1 in (25.4 mm), and the crankshaft was also redesigned. A new intake manifold improved breathing while a redesigned cylinder head featured larger valves and a higher compression ratio. The result was 205 hp (153 kW) and 230 lb⋅ft (312 N⋅m), better fuel economy, and 26 lb (12 kg) lighter overall weight (to 392 lb (178 kg)). This 3800 weighs only 22 lb (10 kg) more than the all-aluminum High Feature V6 that currently dominates GM’s six-cylinder applications, despite being an all cast-iron design.The Series I Supercharged engine went through 2 Supercharger revisions(Gen2&Gen3) and the horsepower improved between initial launch and the time that the Series II L36 was introduced. The M62 supercharger was manufactured by Eaton, for the GM 3800 SI engine. HP was rated at 205 for 1991-1993 engines (Gen2 supercharger) with a 2.55-inch (65 mm) pulley, and 225 for 1994-1995 engines(Gen3 Supercharger). All of the additional horsepower for 1994-95 Gen3 supercharged engines was gained by using epoxy (not Teflon as commonly believed) coated supercharger rotors to improve efficiency, a larger supercharger inlet and throttle body, Thus the 1994-1995 utilized a 2.85-inch (72 mm) pulley versus the 2.55-inch (65 mm) pulley on the Gen2. The easiest way to spot the difference between the Gen2 and Gen3 is the smaller pulley and the ribs on the side of the Gen2 extend all the way down the sides, while the Gen3 ribs stay on only the top, they perform slightly differently and interchanging one without tuning may result in strange behavior of the engine. Redline on Gen3 engines is at 6000rpm but the ECM will shift at 5400rpm without performance shift enabled.

What cars have the 3800 Series 2 engine?
Affected vehicles include: 1997-2003 Buick Regal; 2000-’03 Chevrolet Impala; 1998-’99 Chevrolet Lumina; 1998-2003 Chevrolet Monte Carlo; 1998-’99 Oldsmobile Intrigue and 1997-2003 Pontiac Grand Prix.
A smaller version of this engine was produced in 1978 and 1979 for the Century, Regal and Chevrolet Monza. The bore was reduced to 3.5 in (88.9 mm), resulting in an engine of 196 cu in (3.2 L) piston displacement. The RPO code was LC9. Initially this engine produced 90 hp (67 kW), but in 1979 it received the same improvements in the cylinder heads as did the LD5, and therefore power increased to 105 hp (78 kW).

What's the difference between a 3800 Series 2 and a 3800 Series 3?
The difference is that Series III engines received the new superchargers (Generation 5 – Eaton m90 – if equipped), intake manifolds, fuel systems, and electronics. The L26 is the Series III version of the 3800.
Buick Division, concerned about high manufacturing costs of their innovative aluminum 215 V8, sought to develop a cheaper, cast-iron engine based on the same tooling. They settled on an unusual 90° V6 layout that was essentially the architecture of the ‘215’ less two cylinders. In initial form, it had a bore and stroke of 3.625 in × 3.1875 in (92.08 mm × 80.96 mm), for an overall displacement of 198 cu in (3.2 L). It weighed about 35 lb (16 kg) more than the aluminum engine, but was far cheaper to produce. Dubbed the Fireball V6, it became the standard engine in the 1962 Buick Special. In their test that year, Road & Track was impressed with Buick’s “practical” new V6, saying it “sounds and performs exactly like the aluminum V8 in most respects.”Also note that Series III engines are the base for any 3800 produced for the 2004 year and up. This means the same block, heads, & connecting rods apply to any remaining Series II engines made after 2004 also. The difference is that Series III engines received the new superchargers (Generation 5 – Eaton M90 – if equipped), intake manifolds, fuel systems, powdered connecting rods, as well as larger intake valves, drive by wire throttle body and electronics.A small 181 cu in (3.0 L) version of the Buick V6 was produced for GM’s 1980s front-wheel drive cars. Introduced in 1982, it was a lower deck version of the 3.8 designed for transverse application in the new GM A platform cars such as the Buick Century and Oldsmobile Cutlass Ciera. It shared the same bore size as its larger sibling, but featured a smaller stroke of 2.66 in (68 mm). It used a Rochester E2ME 2-bbl carburetor and the VIN code for the engine is E.The off-center design continued up until the 1988 LN3 version of the engine, when the left-hand bank of cylinders was moved forward relative to the right-hand bank. Although the actual bore spacing between cylinders on the same bank remained unchanged at 4.24 in (108 mm), the LN3 and later engines became known to have “on-center bore spacing”. The 3800 was on the Ward’s 10 Best Engines of the 20th Century list, made Ward’s yearly 10 Best list multiple times, and is one of the most-produced engines in history, with over 25 million produced. A turbocharged version was introduced as the pace car at the 1976 Indianapolis 500, and a production turbo arrived in 1978. The turbo 3.8 received sequential fuel injection and a wasted spark Distributorless Ignition System in 1984. In 1986 an air-to-air Garrett intercooler was added and the RPO Code became LC2. The LC2 engine has a bore x stroke of 3.8 in × 3.4 in (96.5 mm × 86.4 mm). The horsepower ratings for 1986 & 1987 were 235 and 245 hp (238 and 248 PS; 175 and 183 kW), respectively. The limited production GNX benefitted from additional factory modifications such as a ceramic turbocharger, more efficient Garrett intercooler, low restriction exhaust system and revised programming which resulted in a 300 hp (304 PS; 224 kW) factory rating.

Can a V6 be as powerful as a V8?
Vehicles with a V8 tend to have more horsepower than vehicles with a V6, although this varies depending on the components of the engine. V8 engines generally have more torque although, the difference can be minimal in some models. The power of eight cylinders allows for heavier hauls and higher towing capacity.
The LN3 is very closely related to the Series I L27 and Series I L67 Supercharged. In fact, supercharger-related hardware can be fitted to an LN3 without changing the cylinder heads. However, the ECM would have to be reprogrammed. The L27 has a two piece, upper plenum intake and lower intake, the LN3 is all one piece.The turbocharged 1987 Buick Regal Grand National GNX was called America’s quickest automobile, and the model continues to be collected and appreciated today.

The Series III engines include many changes. The upper and lower intake manifold is now aluminum on the naturally aspirated models. Intake ports are mildy improved, 1.83 in (46 mm) intake valves (instead of 1.8 in (46 mm) as on Series II) and 1.52 in (39 mm) exhaust valves were introduced in 2003 engines, just before switching to Series III. Electronic throttle control is added to all versions, as is returnless fuel injection. Stronger powdered metal sinter forged connecting rods are used in 2004+ supercharged, and 2005+ naturally aspirated engines, instead of the cast iron style from Series II engines. Emissions are also reduced. In 2005, it was the first gasoline engine in the industry to attain SULEV (Super Ultra Low Emissions Vehicle) emissions certification.
The first engine in this family was introduced in 1961 for the 1962 model year Buick Special with Buick’s 198 cu in (3.2 L) engine, the first V6 in an American car (the GMC V6 was used earlier in trucks). Because it was derived from Buick’s 215 cu in (3.5 L) aluminum V8, it has a 90° bank between cylinders and an uneven firing pattern due to the crankshaft having only three crank pins set at 120° apart, with opposing cylinders (1-2, 3-4 and 5-6) sharing a crank pin in, as do many V8 engines. The uneven firing pattern was often perceived as roughness, leading a former American Motors executive to describe it as “Rougher than a cob.”Though the pre-3800 rear-wheel drive (RWD) V6 uses the Buick, Oldsmobile, Pontiac (BOP) bellhousing pattern, an oddity of both the front-wheel drive (FWD) and RWD 3800 V6 is that although it is a 90° V6, it uses the GM 60° V6 bell housing (Metric Pattern). For use in the FWD applications, the bellhousings on the FWD transmissions are altered slightly. In 1967, GM sold the design to Kaiser-Jeep. The muscle car era had taken hold, and GM no longer felt the need to produce a V6, considered an unusual engine configuration in North America at the time. The energy crisis a decade later prompted the company to buy the design back from American Motors (AMC), who had by that point bought Kaiser-Jeep, and the descendants of the early 231 continue to be the most-common GM V6 as it developed into a very durable and reliable design. In mid-1984, the 3.8 liter LD5 engine was modified for transverse-mounting in smaller, FWD vehicles, and equipped with multi point fuel injection (MPFI). 1984-1985 models used a distributor and a distributorless wasted spark ignition system was added for all engines produced in 1986 and later. In 1986, it received sequential fuel injection (SFI) and it was initially produced in two forms, the LG2 with flat lifters (tappets), and the LG3 with a roller camshaft and lifters. The latter was offered in various models through 1988. From 1986, the 3.8 had a revised, crankshaft-driven oil pump which eliminated a longstanding problem with pump housing wear and loss of prime. Power produced by this engine was:The 1973 oil crisis prompted GM to look for more economical engines than the V8s of 350, 400 and 454/455 cubic inches that powered most General Motors cars and trucks during that time. At that time, the only “small” engines generally offered by GM were built by the Chevrolet division including the 140 cu in (2.3 L) OHC aluminum inline-four engine used in the subcompact Chevy Vega and a 250 cu in (4.1 L) straight-6 used in smaller Chevy, Buick, Oldsmobile and Pontiac models, whose design roots dated back to the 1962 Chevy II (Nova).

In 1978, GM began to market the 231 as the 3.8 liter as metric engine sizes became common in the United States. The RPO Code was LD5, though California-emissions versions were called LC6. Starting in 1979, the engine was used in the front-wheel drive Buick Riviera, though still with a longitudinal mounting. Larger valves and better intake and exhaust boosted the power output for 1979.
GM recalled 1.5 million vehicles with this engine on April 14, 2009 due to risk of fire from engine oil leaking under the valve cover gaskets onto hot exhaust manifolds. The fire could spread to the nearby plastic spark plug wire retainers on the valve cover and then to the rest of the engine compartment. GM fitted the affected vehicles with redesigned spark plug wire retainers. These engines were noted for having problems with the plastic upper intake manifold cracking around the EGR passage. The engine would then hydrolock. The lower intake gaskets and upper intake manifolds were revised, correcting all these issues.

The Buick V6 was an OHV V6 engine developed by the Buick division of General Motors and introduced in 1962. Originally 198 cu in (3.2 L) and initially marketed as Fireball, it later became popularly referred to as the 3800 for its various 3.8 L (230 cu in) incarnations.
A smaller 3.3 liter 3300 was introduced in 1989 and produced through 1993. It was effectively a lower-deck version of the 3800, with a smaller bore and stroke of 3.7 in × 3.16 in (94.0 mm × 80.3 mm) for 3,340 cc (3.3 L; 203.8 cu in). Like the 3800, it used a cast iron block and heads, push rods, and hydraulic lifters. Unlike the 3800, however, it used a batch-fire injection system rather than sequential injection, as evidenced by the lack of a cam position sensor. It also did not have a balance shaft. Power output was 160 hp (119 kW) at 5,200 rpm and 185 lb⋅ft (251 N⋅m) at 2,000 rpm with a 5,500 rpm redline.The bore was increased to 3.75 in (95.25 mm), and stroke increased to 3.4 in (86.4 mm), increasing displacement to 225 cu in (3.7 L). Since the engine was similar to the popular small-block Buick V8 — now with a cast-iron block and displacement of 300 cu in (4.9 L), the engine was made cheaply at the same factory with much of the same tooling. This engine was used in Buick’s intermediate-sized Special and Skylark models from 1964 to 1967 and Oldsmobile’s mid-sized F-85/Cutlass models for 1964 and 1965, including the Oldsmobile Vista Cruiser and Buick Sport Wagon. End of production of the 3800 V6 engine had been set by GM for January 1, 1999, but was extended to August 22, 2008. It was replaced by the LZ4 3500 OHV V6 in naturally aspirated applications, and the supercharged 3800 by the LY7 3.6L DOHC V6. The L67 is the supercharged version of the 3800 Series II L36 and appeared in 1996, one year after the normally aspirated version. It uses the Eaton Generation III M90 supercharger with a 3.8 in (97 mm) pulley, a larger throttle body, and different fuel injectors, different cylinder heads, as well as different lower intake manifold and pistons than the L36 uses. Both engines share the same engine blocks, but compression is reduced from 9.4:1 in the L36 to 8.5:1 for the L67. GM listed the engine output as 240 hp (179 kW) and 280 lb⋅ft (380 N⋅m) of torque. Final drive ratios are reduced in most applications, for better fuel economy and for improved use of the engine’s torque in the low RPM range. Like most 3800 V6s, the engine is well known for its reliability and low maintenance costs. The engine is a popular choice for aftermarket modification thanks to its very strong internals and impressive power gains from basic upgrades. The engine was built in Flint, Michigan and was certified LEV in 2001. As with the L67, premium fuel (91 octane or higher) is required, but the PCM can compensate for lower octane fuel at the cost of acceleration. The use of below 87 octane fuel can cause detonation that eventually leads to engine damage and failure. The LN3 was replaced by the 3,791 cc (3.8 L; 231.3 cu in) L27 in 1991-1992 and produced 170 hp (127 kW) from 1992 onward, this engine was referred to as the Series I 3800, or 3800 TPI (Tuned Port Injection). In Australia, the LN3 was also replaced by the L27 by Holden who used the engine in their series 2 (1991) VN Commodore range. However, the Australian L27 retained the LN3’s one piece upper intake and lower plenum. Power was still boosted to 127 kW (170 hp) for the Holden L27, before being boosted to 130 kW (177 PS; 174 hp) in the revised VR Commodore in 1993. The L36 made its debut in 1995.

The L26 is the Series III version of the 3800. It is still a 3.8 L (231 cu in) design. Compression remains at 9.4:1 as with the L36, but the aluminum upper and lower intake (2004+) and stronger connecting rods (2005+) are the primary physical changes. The powdered metal connecting rods were meant to be introduced in 2004 along with the L32, but the GM plant in Bay City, Michigan that supplies the Flint, Michigan plant could not achieve the desired production dates in time for that engine year.
The L32 is a supercharged Series III. Introduced in 2004, the main differences between the L67 and the L32 are the L32’s electronic throttle control, slightly improved cylinder head design, and updated Eaton supercharger, the Generation 5 M90. Power output is up to 260 hp (194 kW) in the Grand Prix GTP.The V6 was dropped after the 1967 model year in favor of a conventional 250 cu in (4.1 L) inline-six engine built by the Chevrolet division, and the tooling was sold to Kaiser-Jeep.

It is a derivative of Buick’s 215 cu in (3.5 L) aluminium V8 family, which also went on to become the Rover V8, another engine with a very long life (1960–2006).
Introduced in 1988, the 3800 LN3 would later be loosely considered the Pre-Series I, although the older 3.8 SFI (LG3) was still available that year in some models. Designated initially by VIN code C, the multiport fuel injected 3800 LN3 was a major redesign, featuring changes such as a balance shaft, on-center bore spacing, use of a 3x/18x crank-trigger system, and other improvements. This generation continued in use in several GM products into the early 1990s. It produced 165 hp (123 kW) and 210 lb⋅ft (285 N⋅m).In 1965, Kaiser-Jeep began using the Buick 225 in Jeep CJs. It was known as the Dauntless V6 and used a much heavier flywheel than the Buick version to damp vibrations resulting from the engine’s firing pattern. Buick sold the tooling for this engine to Kaiser in 1967, as the demand for the engine was waning steadily in an era of V8s and muscle cars. When American Motors (AMC) bought Jeep, the V6 was replaced with AMC Straight-6 engines, but the ownership of the V6 tooling remained with AMC.

The engine was produced at the Flint North plant in Flint, Michigan, with engine blocks and cylinder heads cast at the Grey Iron plant (now the GM Saginaw Metal Casting Operations plant) at 1629 N. Washington Avenue in Saginaw, Michigan.One quick idea was tried by Buick engineers — taking an old Fireball V6 picked up at a junkyard and installing it into a 1974 Buick Apollo. The solution worked so well that GM wanted AMC to put the engine back into production. However, AMC’s cost per unit was deemed as too high. Instead of buying completed engines, GM made an offer to buy back the tooling and manufacturing line from AMC in April, 1974, and began building the engines on August 12. With production back within GM, Buick re-introduced the V6 that fall in certain 1975 models — a move made possible by the fact that foundations for the old V6 machinery were still intact at Buick’s engine assembly plant in Flint, Michigan, so it was easy to put the old tooling back in place and begin production at least two years ahead of the normal schedule that would have been required to create new tooling. The bore was enlarged to 3.8 in (97 mm), identical to the Buick 350 and Olds 307 V8s, yielding 231 cu in (3.8 L) displacement. 78,349 units were installed in Buicks for 1975. In response to rising gas prices, a larger 252 cu in (4.1 L) version of the 3.8 liter LD5 V6 was produced from 1980 through 1984 and marketed as an alternative to a V8. The bore was enlarged to 3.965 in (100.7 mm), yielding an output of 125 hp (93 kW) and 205 lb⋅ft (278 N⋅m). This engine was used in many large rear-wheel drive Buicks, and in some models from each of GM’s other divisions, including Cadillac which offered the “big” Buick V6 in several models from 1980 to 1982 as a credit option to the troublesome V8-6-4 engine used in 1981 and early versions of the aluminum-block Cadillac HT-4100 V8 introduced in 1982. It was also the standard powerplant in the front-drive Riviera and Oldsmobile Toronado from 1981 to 1984. Additionally, the 4.1 block was used unsuccessfully at Indianapolis for racing. Its only weakness was the intake valve seals. This was the first naturally aspirated GM V-6 to feature a 4-barrel carburetor. In 1977, Buick redesigned the crankshaft to a “split-pin” configuration to create an “even-firing” version. The crank pins associated with the opposing cylinders were offset from each other by 30°. The relatively small offset did not require flying arms to be incorporated, however a 3 mm (0.12 in) thick flange was built in between the offset crank pins to prevent the connecting rod big-ends from “walking” off the crank pin bearing journal and interfering with the adjacent big end. The 3 mm (0.12 in) thick flange effectively caused the connecting rods on the left-hand bank of cylinders (forward bank for FWD applications) to move 3 mm (0.12 in) forward relative to the right-hand bank, but the engine block remained unchanged compared to the odd-fire engine. Since the cylinders center-lines were no longer centralized over the crank pin bearing journals, the connecting rods were re-designed with the big-ends offset from the piston pin ends by 1.5 mm (0.059 in). The engine in this configuration became known to have “off-center bore spacing”.1964-1965 models featured a single barrel Rochester MonoJet, producing 155 hp (116 kW). In 1966-1967, the 1-barrel was replaced with a 2-barrel Rochester 2GV, giving the engine a 5-horsepower boost to 160 hp (119 kW). The block is made of cast iron and all use iron two-valve-per-cylinder OHV heads. The engine, originally designed and manufactured in the United States, was also produced in later versions in Australia. It was the first six-cylinder engine designed exclusively for Buick products since the Buick straight-six was discontinued in 1930. The new intake manifold greatly improved airflow. To meet emissions standards, an EGR tube was placed in the intake manifold to reduce combustion temperatures.This engine has the cylinders numbered 1-3-5 on the left-hand bank (front bank for FWD applications) and 2-4-6 on the right-hand bank, the number 1 cylinder being the furthest from the flywheel end. The firing order is 1-6-5-4-3-2.1995 buick riviera engine 3800 v6 supercharged. where can i find a diagram of the engine labeling or explaining what everything is? In A chilton repair manual at the library.LTZ 3800 series ll, v6, 3.8 Liter engine Here is the firing order for that engine and vehicle, and let me know if you need any help to understand this diagram, or if you require any further assistance

3800 v6 please got the belt back on but for some reason it doesnt have tension i must be missing a pully but cant figure what i missed please help Here ya go… Serpentine drive belt routing-GM ?C and
cone on the supercharger, I need to see where it’s located exactly, so I need a detailed engine diagram This link may help you. Coolant Elbows Leaking 3800 Pontiac GM Chevy 3 8 Liter V6 engine water..Pennock’s Fiero Forum has been the largest source for Fiero related information during the past 23 years and it has always been free for everyone – members, vendors and visitors. However, it isn’t free for me to maintain. If you want to help me keep PFF up and running, please consider a donation. Your support will be greatly appreciated. Not only by me, but by the thousands of daily visitors that use PFF. If you want to make a donation (PayPal, Bitcoin, Ethereum, etc.) please (or simply send your PayPal donation to [email protected]).

If you have a cylinder misfire, but have a good spark and compression, the fuel injector is probably clogged or dead. The 3800 engine uses high-impedance 12 ohm injectors, and the test spec is 11.80 to 12.60 ohms, so check the resistance across the injector terminals if you suspect a bad injector. If an injector reads outside this range, even a few tenths of an ohm, it may be enough of a difference to cause a problem.

A clogged oil separator valve is a common problem on many BMW DOHC inline sixes. The high failure rate is caused by sludge build-up that can result in oil burning, rough idle and engine fault codes. Although the solution is pretty simple, replacing the valve is labor intensive and can take anywhere from six to nine hours. Transmission fluid likes to be at a constant temperature. If it is too hot or too cold for too long, the performance can fluctuate and potentially cause damage to the transmission. On a Series III 3800 engine in a Buick Lucerne, the returnless EFI system has the fuel pressure regulator mounted in the fuel tank with the pump instead of on the fuel rail. There is no fuel return line from the engine back to the tank. The fuel pressure on these engines should be 56 to 62 psi with the key on and engine off.

Another way to figure out if a misfire is a bad coil is to swap two of the coils on the coil pack. If the misfire moves to the new cylinders, the problem is the coil. If the misfire remains in the same cylinders, the coil is OK and the problem is the wires, plugs, injectors or compression.Long before people started using cotton gauze air filters soaked in oil, the oil bath air filter was the dominant filter on the market. The filter removes debris in the air by running it over oil and a mesh element. These filters worked great when most roads were dirt, but they could be messy to clean.Finding Failing O2 Sensors If an O2 sensor gets “lazy” because of old age or contamination, the computer may not be able to adjust the fuel mixture quickly enough as the engine’s operating conditions change. Related Articles – Join Underhood Service On LinkedIn – Honda Tech Tip: Oil Pressure Switch Fails Intermittently – Fuel Trim

Related Articles – Check Out The August Issue Of Underhood Service Magazine – Hayden Automotive Introduces Low-Profile Fan Clutch – Belt Inspection Checklist Underhood Service’s LinkedIn Page Underhood Service’s LinkedIn Group
Caution: Do not open the drain plug when the engine is hot. Let it cool at least two hours so hot oil does not spray out of the reservoir. The oil level should be at the bottom of the inspection threads in the drain plug hole. If the reservoir is low, top it off with GM Supercharger oil P/N 12345982 (a special 5W-30 synthetic oil).Each coil fires two cylinders with cylinders 1/4, 2/5 and 3/6 each sharing a coil. Since the polarity of the ignition coil primary and secondary windings is fixed, one spark plug always fires with normal polarity while its companion plug fires with reverse polarity. Because the ignition coil requires approximately 30% more voltage to fire a spark plug with reverse polarity, the ignition coil requires more saturation time (loner dwell) and a higher primary current. This allows the coils to produce up to 40Kv if needed.

If you have a 3800 that cranks but won’t start because there is no spark, check to make sure the coils have voltage when the key is on. If there is no trigger signal from the crankshaft position sensor, the PCM won’t fire the coils and there will be no spark.

The MIL comes on with one of these DTCS: P3400 (VPS Stuck Off Bank 1) or P3497 (VPS Stuck Off Bank 2). This may be the result of the front and/or rear rocker arm oil pressure switch intermittently failing.
The first Buick 3.8L was offered in the 1975 model year Skyhawk, Apollo, Century and Regal. The engine was based on an earlier 198 cu. in. V6 that Buick introduced back in 1962. The 3.8L engine shared the same 3.8” bore size as the Buick 350 V8. It also had an “odd-fire” crankshaft, which produced some idle shake and vibration.One of the few trouble spots has been coolant leaks on the Series II 3800 engines with the plastic intake manifold. The OEM intake manifold gasket tends to deteriorate after 60,000 or so miles in the area that seals the cylinder head coolant passage to the manifold. The seepage of coolant past the leaky gasket leads to overheating, and may cause bearing damage if coolant leaks down into the lifter valley and gets into the crankcase. The fix is to replace the OEM gasket with an improved aftermarket gasket, or the revised OEM gasket (P/N 89017554) per GM bulletin 04-06-01-017 issued in May, 2004.

If you test a coil with an ohmmeter, the test specs are 0.5 to 0.9 ohms for the primary terminals under the coil, and secondary resistance of 5,000 to 8,000 ohms at the high-voltage terminal.
Supercharger boost is controlled by the PCM via a boost solenoid, and a vacuum-operated bypass valve, which regulates the amount of boost pressure according to intake vacuum (engine load). At idle and low engine loads, the bypass valve is open allowing air to bypass the supercharger. When the driver steps on it and intake vacuum drops, the bypass valve closes allowing the supercharger to deliver boost pressure. The PCM usually commands the boost solenoid at 100% duty cycle (on all the time), unless the vehicle is shifted into reverse, in which case it kills the boost pressure. If there is a problem with the boost solenoid, the engine may not receive normal boost when accelerating, causing a noticeable loss of power.

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Paragraph 4 – Pro Tip: It is essential to use a reliable source to get the correct firing order of GM 3.8 Liter V6 3800 Series 2 Engine. Using incorrect information can cause serious damage to the engine, and it is always best to consult a professional mechanic for engine-related issues. Get ready to ignite your knowledge with this detailed breakdown of the GM 3.8 liter V6 3800 firing order.
Knowing the firing order of the GM 3.8 Liter V6 3800 Series 2 Engine is crucial while installing spark plugs and wires, diagnosing any engine performance issues, and ensuring optimal engine performance.

Looks like this engine has a case of bad timing, but don’t worry, it’s nothing a little firing order diagram and some elbow grease can’t fix.Paragraph 3 – The GM 3.8 Liter V6 3800 Series 2 Engine has been a reliable and popular engine option for years. It is used in many GM vehicles and has undergone multiple updates to improve performance and efficiency. The knowledge of the firing order is crucial for repairing and maintaining all engine components.

How many miles can a 3800 Series 2 go?
One of the reasons why the 3800 has had such a long production run is that it has been a very reliable, trouble-free engine for the most part. Many of these engines have racked up well over 200,000 miles with normal maintenance.
Paragraph 3 – The firing order of the GM 3.8 Liter V6 3800 Series 2 Engine is unique in that it has an odd firing order with two banks of cylinders that fire alternately. This engine also has an ignition system that uses a waste spark method. This means that each spark plug fires twice per cycle, once during the compression stroke and once during the exhaust stroke, for a more complete combustion.Early detection and repair are crucial for these kinds of issues. In the late 90s and early 2000s, GM lost customers due to widespread engine problems. To regain trust, they had to take action, like recalls and fixes. It’s noteworthy that this sequence has been utilized in many General Motor vehicles, including Buicks, Chevrolets, and Pontiacs. This uniformity gives mechanics with experience on these models the chance to apply their expertise across different car brands, making them more effective in their job. Understanding the past and the growth of how this firing order was established also reveals how engineering decisions made in the past still influence current cars. The firing order diagram of GM 3.8 liter V6 3800 series 2 engine presents significant data about the burning cycle in each cylinder. Here’s a table that displays the particular arrangement for each cylinder, beginning from the driver’s side to the passenger’s side of the vehicle.The GM 3.8 Liter V6 3800 Series 2 engine firing order diagram gives car lovers a complete guide. With the right info and diagrams, recognizing the correct firing order for the best performance is simple. The article simplifies the firing process of the GM 3.8 engine and its max efficiency.It also teaches about the different set-ups of this engine, from Buick Lesabre to Pontiac Firebird. This knowledge saves money and time. It assists mechanics to give the perfect solution for each model confidently.

It is necessary to know an engine’s firing configuration, mainly those who want to do their own car maintenance. GM 3.8 Liter V6 3800 series of engines are used in many General Motors vehicles, from sedans to minivans. Knowing how these engines operate helps to keep them running well and your vehicle in good condition.To keep your engine running smoothly, double-check its specs before making repairs or modifications. Reference a reliable source or consult a technician.

How much horsepower can a 3800 V6 have?
Run in naturally aspirated trim, the low-compression 3800 V6 produced 267 hp and 247 lb. -ft. of torque.
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What year did they stop making the 3800 engine?
For 2009, GM’s more contemporary 3.9-liter V-6 replaced the 3800 in Buick’s Lucerne, but it lasted a tad longer in the Buick LaCrosse and Pontiac Grand Prix. Production of the renowned 3800 V6 engine officially ended in August 2008, nearly 10 years beyond the automaker’s original plan to abandon it in 1999.
Paragraph 1 – The 3.8 Liter V6 3800 Series 2 Engine by GM is a high-performance engine that delivers power and efficiency to various vehicles. Its cutting-edge technology and unique design make it a reliable and efficient engine for any driving need.

Paragraph 1 – The GM 3.8 Liter V6 3800 Series 2 Engine has a firing order that is crucial to its performance. Knowing and understanding this firing order is important for maintaining and optimizing the engine’s efficiency and power.

How much HP can a stock 3800 handle?
darkhorizon. a stock bottom end 3800 will handle about 850 crank horsepower.
There is an interesting story about this engine. A driver in a rural area used his Chevrolet equipped with this engine for many years. He was hesitant to upgrade it because nothing could match the performance of his “old but gold” car’s engine.

This table gives information about the engine. It can help people to understand its features better. The GM 3.8-liter V6 is known for its reliability and long life. Therefore, it was used in many different models.
It is crucial to note that while diagnosing a firing order problem, it is essential to use the specific firing order diagram for the GM 3.8 Liter V6 3800 Series 2 engine. Using the wrong diagram can cause further damage to the engine.Determining a problem with the firing order of the GM 3.8 Liter V6 3800 Series 2 engine is essential to ensure its smooth functioning and performance. A firing order problem can cause damage to the engine and affect its efficiency.

Is the 3800 Series 2 supercharged?
The L67 is the supercharged version of the 3800 Series II L36 and appeared in 1996, one year after the normally aspirated version.
It is important to install the spark plugs and wires in the correct firing order sequence in the GM 3.8 Liter V6 3800 Series 2 Engine to avoid misfire and other performance issues. Start by identifying the cylinder number and follow the firing order of 1-6-5-4-3-2 while installing. Knowledge of firing order is key for optimal engine performance and avoiding damage from misfiring. It helps mechanics diagnose issues such as misfires or rough idling. Paragraph 4 – The firing order and design of the GM 3.8 Liter V6 3800 Series 2 Engine has been used in several GM vehicles, including the Buick Regal, Chevrolet Impala, and Pontiac Grand Prix. (Source: GM Authority)

Car owners and mechanics must understand the importance of correct maintenance and adhering to engine design features, like its firing order sequence. Ignoring this can cause huge losses in money and time.

The 3.8-liter V6 engine 3800 has a specific firing order of 1-6-5-4-3-2. This order is important to understand the engine’s performance. To give an overview of this order, here is a table with relevant data. It includes cylinder configuration, displacement, compression ratio, horsepower, torque, and firing order.
Knowing the details of the 3.8 liter v6 engine 3800 firing order diagram can help users to get the most out of their vehicle when driving or making maintenance decisions. If you can remember the firing order, you’re an official car nerd!

Firing order issues with GM 3.8 Liter V6 3800 Series 2 Engines can cause a range of difficulties. These include an odd noise, misfiring, stalling at low speeds, poor fuel efficiency, lack of power, and a check engine light.
Firing order issues can cause misfire, imbalance, and decreased engine performance. If the issue is not resolved immediately, it can cause damage to the engine in the long run.

Also, other factors like vacuum leaks, throttle body issues, and bad battery connections can cause similar problems. To prevent this, inspect all essential components and use an oscilloscope to test electrical signals. Replace faulty parts with quality ones to fix most firing order issues.Paragraph 1 – The GM 3.8 Liter V6 3800 Series 2 Engine has a specific firing order that needs to be followed for optimal engine performance. It is crucial to know the correct sequence and timing of firing to prevent engine damage and ensure proper functioning.

During the production of the GM 3.8 Liter V6 3800 Series 2 engine, several changes were made to improve its performance, such as the addition of superchargers and improvements in the engine control module. These changes have made the engine a reliable and efficient performer over the years.
Paragraph 3 – Additionally, the 3800 Series 2 engine has a reputation for longevity, with many engines still running strong even after hundreds of thousands of miles. Its robust construction and advanced engineering make it a reliable and long-lasting engine.

Paragraph 4 – To prolong the life of this engine, it is essential to maintain it with regular oil changes, tune-ups, and the use of high-quality parts and fluids. Equally crucial is driving the vehicle gently until it reaches its operating temperature, avoiding prolonged idling, and avoiding overloading the engine. Following these suggestions will help ensure the 3.8 Liter V6 3800 Series 2 Engine runs smoothly and efficiently for years to come.To pinpoint the problem, inspect the affected cylinders. Look for spark plug and wiring defects or damage. Research shows that faulty spark plugs account for almost 60% of ignition issues in modern cars. It’s interesting that the GM 3.8-liter V6 engine was named one of Ward’s Automotive Group’s “10 Best Engines” from 2005 to 2007. This showed how reliable the engine was and its innovative technology. A firing order diagram is the perfect guide! Paragraph 2 – This engine features a V6 configuration with a displacement of 3.8 liters. The 3800 Series 2 engine delivers up to 240 horsepower and 280 lb-ft of torque, making it one of the most powerful engines in its class. Its unique design includes a supercharged V6, a 90-degree block, and a cast iron cylinder.GM 3.8 Liter V6 3800 Series 2 Engine has a special firing order with specific spark plug wire routing. Knowing this is essential to repair and maintain it correctly. The firing order is the sequence of spark plugs that ignite in an engine. Each cylinder must get power at the right time for smooth working and peak performance. Tip: Be sure to check the manual or specs for your engine’s firing order and maintenance needs. Knowing the firing order may not save your life, but it could save your engine from damage.The Firing Order of GM 3.8 Liter V6 3800 Series 2 Engine is important for the engine’s performance. A table can be made with 4 columns showing each cylinder’s number, distributor rotation direction, ignition wire location on the distributor cap, and cylinder’s position on the engine block. This firing order is exclusive to GM motors. It was first introduced in 1988. Want to know more? It’s simpler than understanding Game of Thrones!

Reading long articles about a certain topic can be tough. However, stories can explain complex ideas quickly. One car mechanic told me how he was taking too long to fix the Buick LeSabre’s ignition issue. Another specialist then informed him that he was using the wrong data. He found the complete Firing Order Diagram and Guide for GM 3.8 Liter V6 3800 Series 2 Engine on an auto forum community site which solved his problem in seconds.
Be aware that different engines have different firing orders. Always check your engine’s manual or specifications before attempting maintenance or repair. Incorrectly installed spark plug wires can cause misfires and engine damage.

A firing order diagram for the GM 3.8 Liter V6 3800 Series 2 Engine can be found in the engine manual or on various online platforms catering to automobile repair and maintenance.
Figuring out the firing order of a GM 3.8 Liter V6 3800 Series 2 Engine may be tough. It is 1-6-5-4-3-2, with cylinder one going first, then six, five, four, three and two.1993 — The 3800 V6 got roller rocker arms, a higher compression ratio, and another reduction in piston ring tension to improve fuel economy and performance.

A wheel bearing that’s out of adjustment can reduce bearing life and can affect more than just the bearing. It’s important to adjust the wheel bearing endplay to the proper specifications. If the bearing set is adjusted too loose or too tight, it can cause the bearing to fail prematurely. There are a few types of assemblies, so using correct procedures and tools will ensure a comeback-free wheel bearing installation.
If an injector reads good, use a noid light to check for an injector pulse from the PCM injector driver circuit. No pulse? The problem could be a bad injector driver circuit in the PCM, or no input from the camshaft position sensor (CMP), which the PCM uses to fire the injectors. The CMP sensor is mounted on the front timing cover.1986 — The flat tappet lifters were upgraded to roller lifters to reduce internal engine friction, and sequential fuel injection was also added for improved performance, fuel economy and emissions. The deck height of the block was also reduced 0.035” to accommodate thicker composition-style head gaskets. Some FWD versions of the 3.8L V6 (VIN 3) were offered with roller lifters. FWD versions also got new cylinder heads with pedestal-style rocker arms, and a needle bearing thrust washer for the camshaft.

For shops, R-1234yf means several new procedures, a certification and new equipment in order to properly handle these new systems. Why the difference in handling and servicing R-1234yf systems versus R-134a? Flammability.
1995 — Series II 3800 introduced with revised, lighter block, cross-bolt main bearing caps, lighter pistons, a higher compression ratio (9.4:1)and shorter steel rods. It also had improved cylinder heads with bigger valves, a composite plastic intake manifold, revised accessory mountings on the engine, dual knock sensors, improved oil seals and a plastic engine cover to muffle noise.

If an engine is hard to start or has a misfire at higher speeds, the problem may be a weak coil, a bad plug wire, or a fouled or worn spark plug. On 1996 and newer vehicles, you should get a cylinder misfire code. A code for one cylinder would likely indicate a fouled plug, bad plug wire, or possibly a clogged or dead fuel injector, or a compression leak (burned exhaust valve). Misfire codes for two cylinders that share a coil would likely point to a bad coil.
A scan tool is a computer like any other, and when buying a computer, you ask questions about the Central Processing Unit (CPU), graphics capabilities, memory, storage and other factors such as Bluetooth ability and the quality of a camera.This gets overlooked at times when focusing on the features of a scan tool that benefit us directly, such as vehicle coverage. But, shopping for a scan tool should include a look at the internal and external components that affect the performance and durability of the unit.1988 — Buick now dubbed the engine the 3800. The block casting was revised and a balance shaft added to dampen vibrations. The cast iron camshaft was replaced with a steel camshaft, thinner, low-tension piston rings were added to reduce friction even more, and the mechanical EGR valve was replaced with an electronic digital EGR valve to reduce NOx emissions. Steve Coffell, a technician at Auto World in Hazelwood, MO, says his Top 5 Favorite Tools are: Related Articles – DEWALT Debuts New 20V MAX* XR Brushless Cordless Rivet Tools – Saelig Announces MT03A Milliohm and Motor Tester – Streamlight Launches Updated Rechargeable Spotlight OTC Genisys Touch – Quick scan, bidirectional control Snap-on VANTAGE Another coolant leak problem prompted GM to issue a recall on certain 2000-’03 model year Chevys, Buicks and Pontiacs with the 3800 engine. The coolant leak on these engines was at the gasket between the intake manifold and throttle body or, in some cases, between the upper and lower intake manifold. The recall involved replacing the three throttle body fasteners, applying sealer to the threads, and dumping some sealer pellets into the cooling system reservoir. Recall 03034 was issued in July, 2003, but was only good until July, 2004. If a vehicle was repaired under this recall, there should be a GM recall decal affixed to the engine or under the hood.1982 — 180 hp version of the turbocharged 3.8L V6 offered in Regal T-Types and Grand National. Also, a smaller displacement 3.0L version of the 3.8L V6 with a shorter stroke crankshaft was built for GM FWD cars.

How long do GM 3800 engines last?
One of the reasons why the 3800 has had such a long production run is that it has been a very reliable, trouble-free engine for the most part. Many of these engines have racked up well over 200,000 miles with normal maintenance.
2004 — Series III L26 3800 V6 introduced, with electronic throttle control, returnless fuel injection, stronger powder metal connecting rods, and an aluminum upper intake manifold to replace the troublesome plastic intake manifold. Applications include the 2004-’08 Pontiac Grand Prix, 2005-’08 Buick LaCrosse and 2006-’08 Buick Lucerne. An L32 Supercharged Series III 3800 also is introduced, rated at 260 hp in the Pontiac Grand Prix GT and GTP.i need serpentine drive belt diagram for 2004 Monte Carlo with 3.8 [3800] engine, not on car. where can iget it? Here is a diagram i have. If it’s to small just let me know. 2004 Monte Carlo with 3.8

The crank sensor in your vehicle can be diagnosed by examining the engine wiring diagram. To find the fault, you must first test the voltages of the circuits for the ignition module and many crank sensors. Furthermore, when you turn the key on, 4-8 volts must be found between each crank sensor. If it fails the tests, replace the crank sensors.
Buick had various issues regarding the engine and many had quick fixes and some required mechanical help to do so, here are some of the fix that we findBuick 3800 Engine series is a large and powerful engine at the time but it also faced backlash due to several problems, In this post we’ll look after the 3800 Engine series 2 problemsThe ignition module’s faulty coil can be easily replaced. However, if any of the bad coils are not found, the problem will persist. To avoid such problems on the road, Shop Carmel recommends replacing all of the coils if your engine has a high mileage or is weak.

Is the 3800 Series 2 a good engine?
Even if the performance figures weren’t spectacular, the nearly flawless construction, beefy internals, ease of maintenance, and great fuel efficiency, make the 3800 – particularly in Series II and III guise – one of the best V6 engines ever built.
However, the faulty input is the sole cause of this issue in engine-3800. The engine’s TPS (throttle position sensor) sends incorrect data to the PCM computer (powertrain control module computer). This issue in engine-3800, however, can be resolved by replacing the throttle position sensor (TPS).

An intermittent misfire while driving could be caused by a faulty coil or worn spark plugs. The 3800 V6’s distributorless ignition system is a waste spark system with three ignition coils. A common ignition coil is shared by each pair of cylinders.
Despite being so popular for such a long time, Buick 3800 Engine Series 2 problems began to emerge after the Series II Design was installed in various cars, resulting in a large recall of many vehicles.Another way to determine if a misfire is caused by a bad coil is to swap two of the coils on the coil pack. If the misfire spreads to the new cylinders, the coil is the culprit. If the misfire persists in the same cylinders, the coil is fine and the problem is with the wires, plugs, injectors, or compression.

The main problem with the 3800 series was that You may notice an intermittent hesitation or struggle while cruising on the highway or accelerating lightly. It occurs when the intermittent operations of the automatic TCC (transmission torque converter) do not set fault codes or when the check engine light does not illuminate.
Another major issue with the engine was that it had problems while cranking the engines. Because the Buick 3800 Engine is known to have a problem with the CKP sensor – and the sensor has been replaced – a relearn procedure using a reliable scan tool is required. This ensures that the engine’s computer becomes acquainted with the sensor signals.The Buick 3800 Engine is a dependable engine. However, some issues do arise, and caused Buick 3800 Engine series 2 problems we can assist you in this regard. We’ve identified some of the most common issues with this particular Buick engine.

A flaw found in nearly 15 different car models, including the Buick Century, Chevrolet Monte Carlo, and Pontiac Bonneville, all of which use the Buick 3800 engine, is the occurrence of a chortling noise when the drivers try to accelerate or drive at high speeds. This problem bothers them the most because they frequently drive on highways.
Fuel issues on these engines are the same as they are on any other engine. Injectors can become clogged when using gasoline with low detergent levels. To keep the injectors clean, GM recommends using “top tier” gasoline with higher levels of detergent.Because there was no check engine light or diagnostic trouble codes, it was initially assumed that the problem was caused by an unsteady performance of the automatic transmission torque converter clutch.

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