I have a 95 grand prix and had heads and gaskets done, and now it runs rough and stalls out

Asked by Sep 30, 2014 at 11:32 PM about the 1995 Pontiac Grand Prix 2 Dr SE Coupe

Question type: Maintenance & Repair

In may of this year I had a coolant leak. Had heads pressure tested. Intake gaskets,Exhaust gaskets, Head gaskets, head bolts,Manifold gaskets,EGR gaskets, & Pcv grommet replaced. New water pump, new motor mount, & timing cover gasket replaced. All new rotors, pads, calipers in the rear, and new caliper brackets in front. Had the set screw by the thermostat bled of all air in the system, and the bleeder screw by the waterpump as well. And now the car turns over but does not start, I have to pump the gas to get it running. And I know your not supposed to really touch the gas pedal with fuel injection. But once its running, it runs rough, and wants to die or stall. And has no power. I have been reading alot of places and it seems it maybe my coil pack. I dont know anymore, I know some things but not alot. I am probably gonna fix as much as I can and just sell it for $2000. If anybody can help me that would be helpful.

7 Answers


Sound,s like you may need to check the fuel pressure,sound,s like bad fuel pump.


Or a badly plugged up fuel filter. Or crap in the fuel.

1 of 1 people found this helpful.



Check the TPS (throttle position sensor) if it is defective or out of adjustment the fuel and ignition systems will not be in-sync, so pumping the accelerator pedal to start and rough running and possible stalling can result. Good luck with it.


If you have a plastic intake check for cracks. Check all the plastic vacuum lines and connectors. Get the coil packs tested. If there good it might be the coil pack bracket itself or ground. If you can here the fuel pump whine when turn on the key change the gas filter. If your still having the problem it might be fuel sending unit. Maybe this helps.

I don't have a plastic intake, its aluminum cast.


I've sprayed a little starting fluid around different areas with engine running to see if idol changes. Check entire intake and gasket at base. Also vacuum lines. If engine revs up that your problem.

Your Answer

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 1,920 nationwide Grand Prix listings starting at $3,000.


Pontiac Grand Prix Experts

  • #1
  • #2
    Tom Demyan
  • #3
View All

Related Models For Sale

Used Chevrolet Impala
379 Great Deals out of 27,771 listings starting at $1,499
Used Pontiac Bonneville
340 listings starting at $2,000
Used Chevrolet Monte Carlo
964 listings starting at $3,300
Used Pontiac Grand Am
756 listings
Used Ford Mustang
317 Great Deals out of 38,894 listings starting at $1,995
Used Chevrolet Camaro
267 Great Deals out of 30,511 listings starting at $4,200
Used Nissan Maxima
236 Great Deals out of 18,395 listings starting at $1,500
Used Pontiac Firebird
6 Great Deals out of 658 listings starting at $4,999
Used Honda Accord
592 Great Deals out of 92,752 listings starting at $1,495

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
287 listings starting at $3,995
2007 Pontiac Grand Prix For Sale
276 listings starting at $3,800
2006 Pontiac Grand Prix For Sale
336 listings starting at $3,900
2005 Pontiac Grand Prix For Sale
259 listings starting at $3,000

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.