Pontiac Grand Prix engine problems

engine problem

9.6

really awful

Typical Repair Cost:

$80.00

Average Mileage:

151,600 miles

Number of complaints:

5 complaints

Most common solutions:

  1. not sure (3 reports)
  2. chk wiring harness connectors and also to module (1 reports)
  3. replaced the crankshaft sensor (1 reports)

Helpful Websites About 1991 Pontiac Grand Prix runs roughly, stalls

A D V E R T I S E M E N T S

problem #5

2004Oct 17

(reported on)

Grand Prix ES

  • 154,000 miles

on a cold start the car would run great, but when at normal op temp, the idle would start to jump up and down and at a complete stop, the car would die out. I replaced the ign module,coil packs(all 3), wires, plugs,crank sensor,knock sensor, radiator,coolant temp sensor, thermostat and gasket. Problem was till there. trouble codes all pointed to the ign module, but it ended up being the module connectors. One was making bad contact.

cgar

San Antonio, TX, USA

SEND A COMMENT »
Add A Complaint
problem #4

2008Apr 01

Grand Prix Turbo 3.1L V6

  • Automatic transmission
  • 167,000 miles

my 1991 grand prix turbo cuts out and dies when u accelerate gas peddle and the rpms go up to 3000

Fred W.

Chariton, Iowa, USA

SEND A COMMENT »
Add A Complaint
problem #3

2004Sep 28

(reported on)

Grand Prix EX

  • 155,000 miles

1991 grand prix 3.1 a/t. has 155k miles. Car runs great when cold but at normal running temp, engine idle surges while driving and while stopped, also shuts off at stops but immediatley starts up again. Had fuel pressure gauge hooked up, has normal psi. Replaced fuel filter, crank sensor,knock sensor,coolant temp sensor, radiator,thermostat and gasket,ign module,all 3 coils packs, plugs(ac delco), wires. I'm spent, literally, any suggestions?

cgar

San Antonio, TX, USA

SEND A COMMENT »
Add A Complaint
problem #2

2006Jun 23

(reported on)

Grand Prix

  • 160,000 miles

chevy are the best

Brian C.

Winnipeg, Manitoba, Canada

SEND A COMMENT »
Add A Complaint
problem #1

2003Sep 22

(reported on)

Grand Prix SE

  • 122,000 miles

havent figured out the problem yet,plz help. have replace most sensors i can find (map sensor,mat sensor, throttle position sensor, aic sensor, fuel pump relay, etc...) car still will not run, could it be the fuel pump, 02 sensor, or brain? already know that the catalitic conv. is not plugged up. plz, plz help. i need this car desperately for work and can do the maintenance myself, just cannot figure out whats wrong with it

littlemach69

Indiana, PA, USA

SEND A COMMENT »
Add A Complaint

We have partnered with JustAnswer to offer online auto repair help and advice from expert professional automotive technicians. You describe your engine problem or ask your question and they try to help you figure it out. The fee is typically $9 to $15, but you can offer to pay more for really tough questions. You will usually receive an answer in 10 minutes or less, and you do not have to pay anything unless you accept the answer.