Car would get horrid gas mileage, occasionally stall, exhaust smell under hood, black exhaust. The crossover pipe from each exhaust manifold has a common cracking on the bellows and must be replaced, they run $2500 from gm which just crack again, or $425 for jeff m one that doesn't crack. The pipe cracks cause fresh air to enter the exhaust and the oxygen sensor thinks the cars running rich, causing horrible gas mileage, oil contamination, and stalling. The extra heat from the car running rich cracks the turbo housing.
1990 Pontiac Grand Prix: engine stalls while driving
5 of the 176 complaints about the 1990 Pontiac Grand Prix describe engine stalls while driving.
- owner complaints
- 5
- of this car's complaints
- 3%
- recalls
- 0
Is there a fix? 1 service bulletin covers this area of the car. See below
Engine stalls while driving by model year
What owners say
The turn signal problem involved smoke coming from the steering column, signals do not work all the time. The smoke would stop, the after several days start again. Now the turn lights do not always work. The problem with the front right ball joint has required replacing the ball 4 times, due to the ball breaking off at the point where the ball is attached to the threaded part. At the present, the car stalls most of the time when slowing down. At a stop it stalls and requrires holding the accelerator to keep RPM at around 1000 to prevent stalling. Auto was at a qualified shop for diagnosis and repair. They were unable to stop the problem. They felt they had tried every avenue possible, including: cleaning throttle body and iac motor, changing map sensor and iac valve, checked prom update and prom, which was not defective. Codes were 35, 44, 45 were stored. Car stalls intermittently. Radio has static, check gages light comes on and turns off. Engine surges. Several mechanics have run diagnostics and no solution! We are tired of spending money on it!
Instument panel/cluster module failure caused vehicle to stall.
Coming to a stop the car stalled , repaired two alternator s, five water pumps, one new computer system and a turbo-charger was placed . Please describe.
Vehicle stalls in traffic intermittently. Could result in a vehicle accident.
Service bulletins that may apply
Related recalls
No recalls on record for this model year.
Questions about the 1990 Pontiac Grand Prix stalling
Is engine stalls while driving a common problem on the 1990 Pontiac Grand Prix?
5 of 176 owner complaints about the 1990 Pontiac Grand Prix (3%) mention engine stalls while driving. The model year with the most reports is 2004.
Is there a recall or service bulletin for this on the 1990 Pontiac Grand Prix?
There are 0 recalls and 1 service bulletin for the same area of the car. Check them below with your VIN.
Other symptoms on the 1990 Pontiac Grand Prix
VIN decoder
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