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Pontiac Grand Prix Starting / Stalling Issues

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Comments

  • thatguy423thatguy423 Posts: 2
    I know exactly what is wrong with your car because I had the same problem on my 2000 gtp 2 weeks ago...The problem is the fuel pump resistor. It is about a 30 dollar part and is located on the frame rail underneath your washer fluid reservoir...I did the same as you and replaced the fuel pump and that did nothing, started doing my research, replaced the resistor and it is good as new. My damn car just died out going 70 on the freeway...real safe! The resistor is guaranteed to fix the problem..

    Brad
  • thatguy423thatguy423 Posts: 2
    Bandin I forgot to add something in my last post...The supercharged Gtp has a 2 speed fuel pump and the reason that it will start initially and the ndie is because when starting, the relay bypasses the resistor for the initial blast of fuel, as soon as the engine starts it switches circuitry and sends the current through the "now dead" resistor which is why the engine dies...and immediately after it dies the fuel pressure jumps back up to 50 psi...what a design.
  • mclean71mclean71 Posts: 2
    Thanks for your info...we will give it a try!!!

    Bonnie & Sheldon
  • jagrjagr Posts: 2
    I HAVE EXPERIENCED ENGINE STALLING WITH MY 2004 PONTIAC GRAND PRIX GT NUMEROUS, NUMEROUS TIMES. WHEN I TURN THE KEY I CAN HEAR CLICKING SOUNDS, BUT IT WILL NOT START. THE WEATHER DOES NOT PLAY A FACTOR IN THIS PROBLEM. I HAVE GAS IN THE CAR, SO THAT IS NOT THE CAUSE. THE CAR WAS TAKEN TO THE DEALER AND THEY COULD NOT PINPOINT THE PROBLEM. WHEN THE CAR STALLS THERE IS NO WARNING. IT HAS HAPPEN TO ME AS I AM IN DRIVE MODE, WHEN I AM ABOUT TO START THE CAR, AND SITTING IN THE DRIVE THROUGH AT FAST FOOD RESTAURANTS. THE TIME OF DAY NOR THE TIME OF SEASON DOES NOT PLAY A ROLE. I HAVE HAD THIS CAR TOWED OVER AND OVER AGAIN. MY 1998 GALANT WITH OVER 170,000 MILES HAS NOT GAVE ME ANY TROUBLE, BUT YET A 2004 PONTIAC GRAND PRIX GT GIVES ME HELL. IT IS VERY DANGEROUS TO DRIVE A VEHICLE AND YOU DON'T KNOW WHEN IT WILL STALL. THERE IS NO USE TO TAKE IT BACK TO THE DEALER WHEN THEY CAN'T EVEN PINPOINT THE EXACT PROBLEM. THE CAR HAS GONE THROUGH EVERY DIAGNOSTIC POSSIBLE....HELP! :mad: :cry: :confuse: :sick:
  • jsprousejsprouse Posts: 5
    I let my 02 sit for about 2 months with the same problem, gassing my exped.every 4 days was to much, so I called the gm dealer asked if they knew what the prob. could be and of course it was the converter, only 700 miles left on warranty, I picked it up today and it has ran wonderful, i even filled up the tank , put 40 miles on it and the gas gauge never moved!!!
  • smitty30smitty30 Posts: 1
    i replaced starting relays.the car wont turn over you can sit in the car for 5-10 min. trying to start it putting it in gear,taking the key out put it back in gear,no certain way,then the car will start.The starter is good,and the battery plus the post are clean and have a good connection this is driving my son @ me crazy trying to figure this out. Any ideas? smitty30
  • trange1trange1 Posts: 3
    Can anyone offer me advice about my 2000' Pontiac Grand Prix GT??? (3800 V6 engine) For over 9 months now I have been battling with 2 issues... The 1ST issue is the can randomly WILL NOT start. It will crank but it will not turn over completely. It will happen 1 day and give me trouble for 15 minutes and then 5 days will go by before it happens again. (it just happened today - Tues 5/27) It would not start (but it would crank) for 25 minutes so I left it, came back 1 hour later and it started right up. 2 mechanics later and they cannot figure it out... (a tune up, fuel pump is good, wiring harness replaced, fuel sensor replaced, etc...)

    The 2nd issue is a major hesitation problem which is ALSO intermittent. I will stomp on the gas and even though it still accelerates, it feels like it hesitates and almost sputters. It's strong enough to actually "feel it" when it happens BUT yet there are times when I stomp on the gas and the car accelerates just fine. It's kind of scary when your passing someone because it doesn't feel like the power is there that should be.

    Thank you for taking the time to read this and even replying to this post if you have any answers. I can clarify both issues with more detail if necessary.

    Thank you again...
  • trange1trange1 Posts: 3
    I am from Michigan and it appears that we have the SAME problem and the SAME car. My message post # is 72. I just joined this forum. My car has never stalled BUT IF I hear of anything, I will definitely let you know by replying to your post again. IF you get a chance check out my message post and reply if you want to. I'm not giving up so I WILL find an answer eventually...

    Thanks
  • I too have this problem. It is said to be the CPS (crankshaft position sensor) I'm having my replaced next week. This can be tested at a dealer to confirm. As mine was found to be faulty when warm. I have heard others replacing it, and solved the problem. I just hope so.
  • It was not the CPS (crankshaft position sensor) but the throttle body and plates were gummed up. Cause...K&N filter oil got into the MAF screen and coated the intake.. Total cost at a dealer to clean $145.00 Replaced air filter and so far car is running better. I can only hope this was it.
  • Did you ever figure anything out? I have a 2004 also and mine does the exact same thing?
  • yurybyuryb Posts: 2
    Hello all, I have a 1991 grand prix and this is my problem. The car sometimes starts up fine and then other times it doesn't. Its completely random and not weather dependant. I have a spark, I have fuel and I have air.
    Please any suggestion will be greatly appreciated.
    Thank you.
  • It's been a week, and car has not had a no start or stall. Dealer stated maybe the CPS (crankshaft position sensor) but found I had a K&N filter, and the throttle plates and screen was coated in oil from the filter (it was pre oiled) had everything cleaned and went with FRAM paper filter, so far so good.

    Note..GM discourages use of K&N filters for this reason, unless you very lightly oil the filter. And cleaning the Thottle plates and throttle body at least once a year.
  • 2003 Pontiac Grand Prix GTP that dies mysteriously?

    I have had my car to the dealership & of course it did not die on them.....when they connect my car up to the computer it throws back no codes.....My car dies with out warning sitting at an idle or going 55 mph......any ideas what is the cause? So far my car always starts back up after waiting a minute or so....
  • light36light36 Posts: 1
    That's a difficult issue to solve. There are several different things that could cause the problem. I've seen it happen w/ a faulty ground to the fuel pump on a similar car. It could also be a faulty relay, bad crankshaft position sensor, or some other electrical problem. Either way it could be very expensive to fix unless the problem makes itself evident, whence leaving you stranded. A lot of intermittent problems can take a long time to troubleshoot w/ all the electrical stuff on these newer cars which makes the price very high unless you can troubleshoot it yourself or have a good friend that can. lol.
  • mitchfmitchf Posts: 3
    My wife's car. Sometimes when she uses the car, and drives a short distance and shuts down the car it won't restart. I does it often after she gets gas for it. The car will turn over and try to start then it will choke down. Then after repeated attempts to start it, it will finally start. It's almost like it's not getting fuel. I've replaced the plugs, wires, and fuel filter. It shows no codes on the computer. Could the fuel lines get air in them and cause this? I'm lost. Sometimes it does it and sometimes it doesn't. I need some help bad.
  • mitchfmitchf Posts: 3
    Wrong year. It's a 02.
  • trange1trange1 Posts: 3
    Hi. It's sounds like you have the same problem that I do with my 2000 Pontiac Grand Prix GT. DID you figure out why your wife's car won't start at times? I replaced the plugs, wires, and fuel filter on my car as well but it did not help...

    Any ideas? If I figure out something, I will reply to your post & let you know as well!
  • mitchfmitchf Posts: 3
    No pump hasn't been changed. It just started out of the blue. It won't do it all the time, just when there is a line of people behind you at the gas pump. :)
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