Having problems with your 1990 Pontiac Grand Prix ?

How do I diagnose a fuel computer problem - 1990 Pontiac Grand Prix

Posted / edited by AnonymousUser on : 22-01-2018

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Repair Help & Product Troubleshooting for 1990 Pontiac Grand Prix

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Fuel problems 1999 Grand Prix GTP 3800 Supercharged VIN 1: car starts, but shuts down within 10 seconds. You can see the fuel pressure drop within those 10 seconds. If I flutter the throttle, the fuel pressure will jump back up to 50lbs & back down to 0-10. But, you can keep the car running by doing that. I have replaced the fuel filter & helped a little bit, but still shuts down. Replaced fuel pressure regulator & fuel pump & oil pressure switch & still nothing. HELP....

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Attempt to start the car by turning the key to the Start/Run Position. Observe that the vehicle fails to start and that the security light is illuminated. leave the key in the 'ON/Accessory' Position. (DO NOT turn key to the 'off' position.) ... 2002 Pontiac Grand Am

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I have a 00 pontiac grand prix with a 3.1 engine. engine cranks, has fire, has 60 lbs fuel pressure and still wont start. i have changed fuel pump, crankshaft sensor, fuel pump breaker, fuses are good. what the heck is my problem thanks and good luck!!!!

Is the security light in the dash flashing? what engine control fault codes do u have? U can call me at my house in USA if you need more help until 5 pm 925-577-7157 ... Pontiac Grand Prix

Hi i have a 93 pontiac grand prix that i ahve replace everthing on and still nothing above idle (tps, egr, intake gaskets, tb, cataltic converter, computer, did full tune up , fuel pump, fuel filter , and some relays..... cant to save my life seam to get anything to work i have also tested the fuel pressure and holds at 40psi

Remove the ignition module,and have it tested,there is a est mode in the module that may have went out,est is electronic spark control.If it checks good,then the computer would be the problem,I hope this was helpful,and if so,please rate,and see if t ... Pontiac Grand Prix

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The positive battery cable is prone to corrosion at the battery end. Many times, the connector will completely decay loose at the cable end. Replace the cable if that is the case--don't use a clamp-on replacement terminal as they are prone to failure ... 1997 Pontiac Grand Prix

Is there anyone who can help please. My brother was driving my mothers 1999 pontiac grand prix when he ran out of gas. He put fuel in it and it starts but quits immediatly. he changed the fuel pump but continues to do the same thing. What could be the problem. Thanks

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Sounds like a crank sensor, my cousin had the same problem ... 2004 Pontiac Grand Prix

My '96 Pontiac Grand Prix is having trouble starting. It will start, but it will not stay running. It seemed like the battery was drained, so we swapped it with a new. My dad had changed the fuel filter and at that point it sounded like it wanted to run, but he had to give it gas to keep it alive. As soon as he laid off the gas it would slowly die. Can anyone help me out with this problem?

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I have a 2005 sedan pontiac grand prix, recently all the gages started to going crazy without reason, the screen shows me low fuel, the ac does not cool very well, the remote do not open the doors, the rpm's shows cero, the mileage gage shows cero also, and suddenly everything comes back to normal again....do I need to replace a computer module in my car??

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I have a 97 pontiac grand prix with a 3800 v6 non cupercharged engine. Service engine light came on so i changed spark plugs and wires with oem parts. Now it is hesitating and running rough with service engine light soon stays on. Used diferent fuel and put in some lucas brand cleaner to clean out the injectors, but hasnt helped. What could the problem be and how can i fix it?

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