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Used PONTIAC FIERO Parts List

Parts

Post Date Category Location Title
2014-11-20 Selling Etc.
2014-09-24 Buying Columbus 1986 Fiero Muncie 85-86 V-6 4-Speed Select bracket
2014-04-16 Selling Rochester 1986
2014-02-20 Selling Chico pontiac fiero 1986
2012-06-22 Selling Atlanta Front and Rear bumpers Pontiac Fiero $100
2011-09-28 Selling Green bay Fiero 3800 SC Swap Harness
PONTIAC FIERO
Once a dream originally envisioned by John DeLorean (inspired by his Pontiac Banshee prototype), the Fier- -- meaning "proud" in Italian -- was finally designed by Hulki Aldikacti as a Pontiac sports car. The Fier- was the first two-seater Pontiac since the 1926 t- 1938 coupes, and als- the first mass-produced mid-engine sports car by a U.S. manufacturer. Additionally, many technologies incorporated in the Fier- design were radical for its time. Alternative names considered for the car were Sprint, P3000, Pegasus, Fiamma, Sunfire, and Firebird XP. The Fier- 2M4 (2-seat, Mid-engine, 4-cylinder) was on Car and Driver magazine's Ten Best list for 1984. The 1984 Fier- was the Official Pace Car of the Indianapolis 500 for 1984, beating out the new 1984 Corvette for the honor.

Already selling the Chevrolet Corvette, General Motors management and accountants were opposed t- investing in a second two-seater sports car. But in 1979, during the oil crisis, management saw a market opportunity for a fuel-efficient sporty commuter car and design work on the Fier- commenced. T- this end, it was fitted with a fuel efficient version of Pontiac's 2.5L 4-cylinder engine capable of 27 mpg (US) (8.7 L/100 km/32 mpg imp) in the city and 40 mpg (US) (5.9 L/100 km/48 mpg imp) on the highway with the economy-rati- transmission option. These figures are EPA test-circuit results, published by Pontiac, and confirmed from multiple sources. It was impressive mileage for a 2.5 liter engine of the period, and still good by today's standards, but the 3-speed automatic reduced highway mileage t- only 32 mpg (US) (7.4 L/100 km/38 mpg imp). In respect t- fuel-economy, the Fier- would appeal t- a market niche for which the Chevrolet Corvette with its V8 engine was unsuitable.

A mid-engine layout was chosen as a way t- reduce both aerodynamic drag and vehicle weight t- improve fuel efficiency, and als- for its handling, traction, and braking benefits. The sports car potential of the mid-engine layout was not fully realized when the Fier- debuted. In line with its market position, the tires, brakes, and some suspension components were carried over from other GM economy cars (like the Chevrolet Citation and Chevrolet Chevette) s- the Fier- could be priced appropriately. As a result, the handling and cornering abilities of the initial Fier- were merely on par with other contemporary sporty coupes (Road & Track 1985). The public had high expectations for the Fier- with its mid-engine layout and futuristic styling, which resembles more exotic mid-engine sports cars costing much more. While initially garnering good reviews for its handling (Motor Trend 1984), the Fier- soon received disappointing reviews, as the automotive critics expected higher performance from a mid-engine two-seater. Despite the critical press, the Fier- sold extremely well and Pontiac operated three shifts at the factory during 1984, and could not keep up with initial demand.

The sharing of suspension components with other GM cars meant the rear suspension and powertrain was almost identical t- that of the Chevrolet Citation and Pontiac Phoenix; the Fier- even included rear tie rod ends attached t- a "steering knuckle", although these were hard-mounted t- the engine cradle and only used for maintaining the rear tire alignment. The front suspension was derived from the Chevrolet Chevette and Chevette enthusiasts found that they could upgrade their undersized front brakes and rotors using Fier- parts.

By 1985, the oil crisis was a thing of the past and demand developed for a Fier- having more engine power and better sports car performance. Pontiac responded by introducing the GT model which included upgraded suspension tuning, wider tires, and a V6 engine having 43 horsepower (32 kW) more than the base 4-cylinder. In 1986, the GT model was restyled t- look even more sleek.

Numerous changes were made t- the 1988 Fiero. The most significant was a completely redesigned suspension (and parts of the space frame) t- realize the potential of the mid-engine layout. Now unique t- the Fiero, the new suspension included new tw- piece brake calipers and upgraded brake rotors for 1988. The available 4 & 6-cylinder engines benefited from evolutionary improvements, but the planned availability of turbochargers and newer DOHC engines did not happen before production ended. Officially, production ended because of an internal GM forecast of insufficient future profits due t- an expected decrease in overall demand for two-seater sports cars. The forecast may have been a year premature, as the actual sales in 1988 were lower than prior years but still double the forecast. The Fier- was still turning a small profit for the company even in its final year.

Production years

1984

1984 was the first production year for the Pontiac Fiero, beginning production in August 1983. In an effort t- sell the car as being economically sensible, GM equipped and sold the Fier- as a commuter car; however, the marketing build up leading t- initial release indicated anything but a regular commuter. The car als- proved uncomfortable for some drivers because of the lack of power steering.

1984 was the only year in which the Limited "Indy Pace Car" edition, consisting of an Indianapolis 500-themed option package on SE-model vehicles, was offered (excepting 1985, in which the package was specially reissued). Approximately 2,000 of these vehicles were sold. The Indy had aer- body cladding and new front and rear fascias that would be used on the 1985 GT. Only the underpowered 4-cylinder engine was available, though a few prototypes could be seen driving around the Greater Detroit area with a unique periscope-style inlet sprouting from the engine compartment and curving up and over the roof. This "periscope" style inlet was used on the actual Indy Pace Car Fieros that appeared at the 1984 Indianapolis 500. This inlet scoop, and the 2.5 liter Super Duty engine that they fed, were not available on the production model pace car replicas. 1984 production VIN Style Cars produced 1G2AE37RxEPxxxxxx Fier- 7,099 1G2AM37RXEPxxxxxx Fier- Sport 62,070 1G2AF37RxEPxxxxxx Fier- SE or Indy 65,671 Total production 136,840

1985

1985 saw the introduction of the GT model, which looked just like the 1984 Indy model without the decals or body color wheels. The problem with insufficient power was addressed, much t- the satisfaction of the general public. A Chevrolet 2.8 L V6 engine rated at 140 hp (104 kW) was put int- the car, satisfying most critics of the base engine. The High Output V6 was paired with a modified Muncie 4-speed transmission. The 4-cylinder engine (known as the "Iron Duke") was now paired with the Japanese-designed Isuzu 5-speed (als- produced at the Muncie, Indiana plant). 1985 production VIN Type Cars produced 1G2PE37R#FP2##### Fier- 5,280 1G2PM37R#FP2##### Fier- Sport 23,823 1G2PF37R#FP2##### Fier- SE (I4) 24,724 1G2PF379#FP2##### Fier- SE (V6) 1G2PG379#FP2##### Fier- GT 22,534 Total production 76,371

1986 1985 Fier- Coupe 1985 Fier- Coupe

1986 was the first year the fastback roofline was offered (sometimes wrongly referred t- as a "1986 1/2" model -- there was only one "GT" in 1986). Though originally conceived by Pontiac insiders as a new model, possibly called the "GTP" or "GTU," it has been said that GM management at the time felt that using "GTP" or "GTU" suggested a racing car and thusly an image they did not want t- promote. Individuals present at the unveiling of the new fastback roof style at a GM test track actually thought it was a new Corvette at first. But this new body style simply became the GT model for 1986 while the old 1985 GT body style became the SE model. Als- offered late in the production year was a 5-speed Muncie-Getrag transmission (coupled only t- the V6 engines). Models equipped with the 4-cylinder engine remained largely unchanged. The clutch hydraulic systems were redesigned with new master and slave cylinders. 1986 production VIN Type Cars produced 1G2PE37R#GP2##### Fier- 9,143 1G2PM37R#GP2##### Fier- Sport 24,866 1G2PF37R#GP2##### Fier- SE (I4) 32,305 1G2PF379#GP2##### Fier- SE (V6) 1G2PG119#GP2##### Fier- GT 17,660 Total production 83,974

1987 Modified 1987 Pontiac Fier- GT fitted with aftermarket side scoops and Ferrari style front Modified 1987 Pontiac Fier- GT fitted with aftermarket side scoops and Ferrari style front

1987 saw changes t- the front and rear fascias on the "base coupe" with the SE & GT models keeping the same "Aero" nose. The new non-aer- noses lost the black bumper chunks of the earlier models and had a smoother look. The 4-cylinder's power rating increased t- 98 hp (73 kW) with some major modifications which included a roller cam, redesigned intake manifold, distributorless ignition system, open combustion chamber cylinder head and upgraded throttle-body fuel injection system. This was the last year for the spin-on oil filter on the 4-cylinder. The car was offered in Bright Metallic Blue and replacing the ribbed black moulding was the round style found on the GT models. As a side note, the SE models retained the ribbed moulding, and added the aer- nose found on the GT. Redesigned headlight motors appeared in 1987. Additionally, starting with the 1987 model Pontiac dealerships offered an upgrade in the form of an "option" that changed the original body t- a Ferrari-type body, called the Fier- Mera. While technically a "kit", the change in body style was offered only on new Fieros and is considered a class of car in its own right. There was a limited production of Fier- Meras made however, as the company that produced them, Corporate Concepts, was sued by Ferrari and ordered t- stop. 1987 production VIN Type Cars produced 1G2PE11R#HP2##### Fier- 23,603 1G2PM11R#HP2##### Fier- Sport 3,135 1G2PF11R#HP2##### Fier- SE (I4) 3,875 1G2PF119#HP2##### Fier- SE (V6) 1G2PG119#HP2##### Fier- GT 15,968 Total production 46,581

1988 1988 Pontiac Fier- GT 1988 Pontiac Fier- GT 1988 Fier- Formula 1988 Fier- Formula

The 1988 Fier- brought a new suspension design, thought by many t- have a striking resemblance t- those designed by Lotus, which at the time, was about t- be acquired by General Motors. The suspension was never a Lotus design though - it was the suspension the Pontiac engineers had designed in the beginning, along with what they learned from the racing program. Up front were revised control arms and knuckles that reduced steering effort and improved the scrub radius. In the back, the old Citation parts were replaced with a real tri-link suspension with all new knuckles. This new suspension came with staggered wheel sizes on WS6 suspension equipped models, with 15-inch (380 mm) by 6-inch (150 mm) wide wheels up front and 15-inch (380 mm) by 7-inch (180 mm) wide wheels in the rear for improved handling balance and t- offset the slightly increased front track that resulted from the improvements. Topping off the package were the new vented disc brakes at all four corners, which addressed another common complaint of road testers. Power Steering was als- t- be a late addition, but never made it t- production in time. The 4-cylinder engine received an in-pan oil filter element and balance shaft. A "Formula" option was added, which offered many of the GT features with the standard coupe body. 1988 marked the end of production for the Fiero, and is als- considered t- be the best Fier- produced. Improvements t- suspension, brakes, steering, and improvements t- both the four-cylinder and V6 engines took the car t- a level far beyond the 1984 model that had received much criticism. Als- 1988 was the only year T-tops were an option through dealerships, and the only year a yellow exterior color was available from factory. During the Fiero's final model year, the Pontiac, Michigan plant, where the Fier- was built, was closed down. 1988 production VIN Type Cars produced 1G2PE11R#JP2##### Fier- 13,910 1G2PE119#JP2##### Fier- Formula 5,643 1G2PG119#JP2##### Fier- GT 6,849 Total production 26,402

1990 1989/1990 Fier- Prototype, displayed at the 2006 Michigan Fier- Club show, "Fieros at the Hall". 1989/1990 Fier- Prototype, displayed at the 2006 Michigan Fier- Club show, "Fieros at the Hall". 1989/1990 Fier- Prototype, Engine Bay. 1989/1990 Fier- Prototype, Engine Bay. 1989/1990 Fier- Prototype, Interior. 1989/1990 Fier- Prototype, Interior.

A prototype of the never-produced 1990 Fier- was displayed at the 20th Anniversary show in July 2003, at Fierorama 2005, at the Michigan show in 2006 and most recently at the 25th Anniversary Show in Pontiac, Michigan in 2008. Fier- enthusiasts consider themselves both lucky and thrilled t- have an opportunity t- see such a historic vehicle with such regularity. Continued showing of the prototype may n- longer be an option in the near future, as GM has taken t- cutting funding t- relieve the pressure of its financial woes. Therefore, the viewing of prototypes may not be such a regular occurrence in the future.

Much of its design influence is apparent in the Fourth Generation Firebird. New engines were proposed for the 1990 model year, from the then new DOHC 190 bhp (142 kW) "Quad 4" 4 cylinder as a base engine t- replace the 2.5 Iron Duke t- a new 200+ bhp DOHC V-6 for the GT models. Even a factory installed V8 is rumored t- have been seen at a test track. The single 1990 Fier- GT prototype had an early version of the upcoming DOHC V-6 that would be put int- production in the Grand Prix and Lumina Z34 in the early 90's. This engine developed more than 200 bhp (150 kW).

Critics of the axing of the Fier- model claim this new and improved model would have been faster, quicker, better handling, and cheaper than the Corvette. GM cited slumping and unprofitable sales of the Fier- as the reason for its demise following its 5th model year. 1989 production VIN Type Cars produced 1G2PE11x#KP2##### Fier- 1

Technical features

Suspension design

The front end of the car is a wider direct derivative of the Chevrolet Chevette and Pontiac T1000. It employs a double A-arm (or double wishbone) design common prior t- the advent of struts, and has naturally good geometry. A drawback of this design, however, means that the car's front suspension has four ball joints and four tie rod ends. Nevertheless, the tie-rods allow toe-in/out adjustability. Minimal camber adjustments exist on 84-87 models without an after-market upgrade available from MOOG that replaces the upper ball joints with slotted mounting points units. The joints have typical grease fittings for regular lubrication commonly found on pre-2000 autos.

The rear suspension is essentially a GM X-car's (Chevrolet Citation, Oldsmobile Omega and Pontiac Phoenix) front suspension moved t- the rear of the Fiero. The uppers are top-plates and Chapman struts, while the lowers are attached with ball joints. In lieu of the steering rack which would have been installed in an X-car, tie rod ends are attached t- the engine cradle and used t- align the rear wheels.

The four wheel independent suspension provides uncharacteristically accurate handling for a vehicle of its size and price range. However, due t- the use of multiple suspension pivot and attachment points (similar t- the Corvette's suspension architecture), maintaining the suspension is more costly than some less technical suspension systems.

With the 1988 model year came a completely new front and rear suspension with vented disc brakes at all four corners- what Pontiac's engineers had planned for the car t- have from the beginning. The front suspension geometry was changed t- decrease the scrub radius thus decreasing steering effort without adding a bulky power steering system. The camber curve was als- much improved, the dampers are moved inside the coil springs, and new sealed bearing/hub units were used in 1988. The rear suspension featured multi-link (tw- lateral links and one trailing arm) Chapman strut suspension, and the tie-rod related bump steer experienced with the earlier suspension design was fixed. The brakes were als- upgraded t- 10.5 in (267 mm) vented rotors on the front and rear with an improved slide caliper design having larger diameter slides. The Fier- Formula (new for 1988) and Fier- GT models als- received a rear anti-sway bar t- compliment non-progressive rate springs.

The 84-87 frames will accept a 1988 rear cradle. However, the struts must be replaced with a narrower diameter Carrera coil-over unit with a steel tube extension and offset mounting plates added t- replace the Chapman strut unit. Thus yielding a larger, 1984-87 engine compartment with the ride-quality benefits of the 88 suspension.

In the August 1985 issue of Road & Track, the Fier- was tested against 6 other sports cars. The slalom results (MPH): Honda Civic CRX Si: 62.5 Toyota MR2: 61.6 Pontiac Fiero: 61.5 Alfa Rome- Graduate: 58.4 Bertone X1/9: 58.3 Mazda Rx-7 GSL: 57.2

Transmissions

Automatics The Fiero's mid-mounted 2.8L V6 The Fiero's mid-mounted 2.8L V6 The Fiero's mid-mounted base 2.5L 4 cylinder The Fiero's mid-mounted base 2.5L 4 cylinder

All automatic-equipped Fieros were equipped with the three-speed TH-125 with torque converter lockup. Automatic transmission final drive ratios:

* I4 - 1984-1986: 3.18 (RP- "F75") - 1987-1988: 2.84 (RP- "F17") * V6 - 1985-1986: 3.06 (RP- "?") - 1987-1988: 3.33 (RP- "GX3")

4-speed manual

All 4-speed manual transmissions were built at the Muncie, Indiana Allison plant. The 1984 production line saw tw- transmissions, a performance 4-speed with a final drive rati- of 4.10, and an economy 4-speed with a final drive rati- of 3.32. The V6 on the 1985 model and part of the 1986 production year came with a 4-speed with a final drive rati- of 3.65. The lower-geared 4.10 4-speed transmission showed improved acceleration, but sacrificed fuel economy.

5-speed manual

Isuzu and Muncie (Getrag)- 5-speed transmissions were available, depending on model and equipment beginning in 1985 for the Isuzu 5-speed which came on 4 cylinder cars and in 1986 for the Muncie 5-speed which came on V-6 equipped cars. The Getrag 282 5-speed is sometimes referred t- as the Muncie 282 or the Muncie Getrag 282, as the design was licensed t- General Motors for manufacture by Muncie (Getrag never built the 282). This Muncie transmission is the stronger unit, designed for use with the higher output of the V-6. People that use a high output V-6 or a V-8 often upgrade t- the rare Getrag 284, found in 91 t- 93 Grandprix's, with the help of a shifter head conversion on the transmission.

Manual transmission gear ratios Year Style Code Axle 1st 2nd 3rd 4th 5th rev. 1984 econ- 4 speed MY8 3.32 3.69 1.95 1.24 0.73 ? 3.42 1984 perf 4 speed M19 4.10 3.53 1.95 1.24 0.81 ? 3.42 1985 V6/4-speed M17 3.65 3.31 1.95 1.24 0.81 ? 3.42 1985 I4/5-speed MT2 3.35 3.73 2.04 1.45 1.03 0.74 3.50 1986 V6 4 speed M17 3.65 3.31 1.95 1.24 0.81 ? 3.42 1986 V6 5 speed MG2 3.61 3.50 2.05 1.38 0.94 0.72 3.41 1988 I4/5-speed MT2 3.35 3.73 2.04 1.45 1.03 0.74 3.50 1988 V6/5-speed MG2 3.61 3.50 2.05 1.38 0.94 0.72 3.41

Problems and issues

Engine fire reputation

Total production of the Pontiac Fier- over all 5 years was 370,168. Regarding the number of cars which suffered an engine fire, we have the following tw- references, one from NHTSA and one from Pontiac Division.

"The National Highway Traffic Safety Administration...said it has received 148 complaints regarding [Pontiac Fieros catching fire] including reports of six injuries...Low levels of engine oil may cause a connecting rod t- break; allowing oil t- escape and come int- contact with engine parts. The oil would catch on fire when it contacted the exhaust manifold or hot exhaust components...David Hudgens, a GM spokesman in Detroit... said, 'If you ran out of oil, and then that coupled with some aggressive driving perhaps, and maybe not changing the oil very often, you end up with a broken rod, and that's where the connecting rod came in, it is still the owners responsibility t- check the oil.' "

"GM tests have shown that running these 1984 cars with low engine oil level can cause connecting rod failure which may lead t- an engine compartment fire...Pontiac is aware of 260 fires attributable t- the condition, along with ten reported minor injuries."

The larger of the tw- reported numbers of cars with fires (260), amounts t- 0.07% of Fieros produced. The fires affected almost exclusively the 2.5 L engine, and mostly 1984 models. (Note that there may have been additional occurrences after the above reports were published.) The primary cause of engine fires was a batch of poorly cast connecting rods which failed when the oil level became to- low. The faulty connecting rods were produced in GM's Saginaw plant. The theory is that the sports car styling attracted buyers wh- would drive the car hard, most notedly over-revving the engine. Another factor was the misprinted three quart oil capacity, the actual oil capacity was 4 1/2 quarts but a misprint in the dipsticks and the owners manuals lead t- people running three quarts and perhaps a leaky valve cover gasket which would allow the oil level t- decline over time t- a dangerously low level. If the proper oil level was not maintained, the bearings could seize, snapping the porous castings of the connecting rods resulting in punched holes in the engine block, thus spraying oil ont- hot exhaust components where it could ignite.

Most vehicles existing today have been serviced by GM during one of the safety recalls on the car. On the fire-related recall, shields and drip-trays were added t- prevent leaking fluids from contacting hot surfaces. The presence of drip shields between the engine block and the exhaust manifold are a good clue that the car was retrofitted. The addition of the longer AC Delc- PF51 oil filter and a re calibrated dipstick added extra oil capacity t- the oiling system, and enabled running 4 quarts of oil in the crankcase instead of 3 quarts t- help prevent oil starvation t- the rods. Certain vehicles had their connecting rods or entire block replaced.

Another theory is that some fires may have been due t- the engine wiring harness being located in the center of the engine bay above the exhaust manifold, where the heat could theoretically melt and ignite the wiring. Also, the 1984 model had a magnesium grille over this area. In later models, this was improved t- some degree with much better heat shielding wrapped around the wiring harness.

A third cause of fires was due t- the method used t- cast the engine block and possibly overtorqued head bolts. Some engines developed cracks in the block that would leak coolant and/or oil, sometimes accompanied by broken head bolts directly above the crack. The leak would spray coolant or oil ont- the hot catalytic converter and exhaust manifold located at the front of the engine compartment resulting in fire. This was the cause in several cases.

Cooling system issues

With the mid-mounted engine and long pipes carrying coolant t- the front-mounted radiator, the Fier- was als- prone t- overheating if the cooling system had not been properly filled. Simply pouring coolant int- the thermostat housing (on the engine) would leave an air bubble in the radiator, while adding coolant t- the radiator would leave an air bubble in the engine's coolant passages. Proper procedure (filling the thermostat housing, then burping the bubble out of the radiator by cracking open radiator cap until coolant exits) must be followed in order t- ensure an air-free cooling system.

A second problem has become common as more Fieros are being serviced by shops unfamiliar with their design. The under-body coolant tubes are positioned in such a way that a casual glance beneath the car will not suggest their fragility. As a result, many have been crushed by the shop lifts, resulting in a near complete lack of engine cooling. The age of the car means that even GM dealerships may be unaware of the proper jacking methods.

Today Stere- speakers embedded in the headrests; one of many innovative features t- debut in the Fiero, eliminated in the 1986 model year due t- cost. Stere- speakers embedded in the headrests; one of many innovative features t- debut in the Fiero, eliminated in the 1986 model year due t- cost.

Currently the Fier- has a cult following of owners and customizers. While all Fier- models are considered t- be collectible, the 1988 model year is especially sought after by collectors due t- its limited production numbers and vastly improved underpinnings. Because of an abundance of replacement parts available from other General Motors vehicles, there are many upgrades that can be done t- improve performance and reliability of the cars. Additionally, a multitude of different General Motors engines have been installed by enthusiasts, from the Quad-4 engine t- the Chevrolet small-block V8 t- the Cadillac 4.9L and Northstar V8s. The GM 3800 Supercharged is als- a very popular choice. Installation of the 4.9L V8 or smaller engines is possible with few modifications t- the car itself, because Fier- prototypes were tested with a similar small aluminum V8 prior t- production. As a result, the engine bay is large enough t- accommodate engines of that size.

A large following of owners still exists with many web pages, groups, and clubs devoted t- the car, and the basic chassis is commonly used as a kit-car platform from wild custom rebodies t- Ferrari F355 replicas.

Models

Fier- models and die-cast replicas have come and gone over the years. Hot Wheels released a 1984 Fier- 2M4 under many paint schemes. These Hot Wheels cars are now very rare. Matchbox and Majorette als- released Fier- models during the car's heyday. Monogram has released and re-released a 1985 Fier- GT model (the re-release is currently available). In recent years, a large 1:18 die-cast model of a 1985 GT has been released in red and silver. In 2007 the Motor Max toy company began releasing small die-cast Fier- GT toys under the 'American Graffiti' and 'Fresh Cherries' lines. Select Wal-Marts sold a special "Since '68" Fier- made by Hot Wheels, which uses the original 1984 mold with a new paint job.
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