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Pontiac Grand Prix Starting / Stalling Issues

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  • 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. :)
  • headachheadach Posts: 17
    The car runs fine. It has a new alternator, plugs, wires and batt around a year old and tested fine in the car. The volts read fine when it doesn't start. It makes a click noise and doesn't turn over at all. I turn the key back and try again and it will start but the engine will rev up high then idle normal. I cleaned out the idle air control valve and even swapped it with my other car which was fine and it still does this. The only thing it does idle a little rough under load of turn signal. I just bought the car for a good price and don't want to put too much money in it right now. It has the 3.1 Multi port engine with around 93000 miles. Please can anyone help i am afraid of getting stuck. Thank you!
  • eddie40eddie40 Posts: 2
    I have 94 3.1se with same problem. Starter will click periodically and not start, play with key, shifter, security lock then it will decide to work (sometimes), this has been an ongoing problem for a few years. Seemed to be a starter issue - Pontiac dealer changed starter 2 times, my mechanic thought it was starter also, changed starter again; problem still re-occurs after short period of time. After checking the web have noticed others with the same problem. Checked different forums on the web and found someone who said it was a control module reset problem due to a weak battery. Replaced batt. on July 5th, car has not had problem since. Hopefully cured!?! In your post you stated "idles little rough under load of turn signal". I have noticed a difference in my idle when turn signal is on also. Maybe electrical ground draining batt. during turn signal op.?? Love my GP 94, runs great dispite starting problem have 206k miles and still going like a top!! Good luck with problem. Also curious if anyone out there has a solid answer to this problem.
  • kgnpenykgnpeny Posts: 4
    Hi,

    My 98 Grand Prix (145k miles) failed to start, happened with no warning, in between errands. The engine would start but immediately die. Giving it a little gas to keep it going sounded like it was running on half the cylinders. Had to have it towed to a local repair shop (had been there twice before over the years when the battery went dead out of the blue). The shop called today and said it was a bad Air Flow Meter, $350 part !! I browsed the forums but no mention of an Air Flow Meter. (may be called something else?) Does anyone know what that part is? Sound familier?

    Coincedently two weeks ago I had the car in the shop (dealorship, not the same place it is now) for routine maintence and state inspection, that incuded replacing the air filter. Is this AFM located in the area of the air filter?

    Appreciate knowing if replacing the part will fix the problem or could it be something else that will pop up "out of the blue" again?

    Thanks!
  • eddie40eddie40 Posts: 2
    Do not know what an Air Flow Meter is, maybe they are talking about oxygen sensor failure which is a common problem with many cars.
  • wwpattewwpatte Posts: 1
    i have a 2000 GTP which is having starting problems. We went shopping and came out of the store, put the key in and when I turned the key i can hear a click that sounds like it comes from where the fuse box is. We took the starter off and had it tested and it is perfectly fine. The starter does not even attempt to turn when the key is turned but it is getting power. I think that there is a relay inbetween the ignition switch and the starter but I am not sure if that could be the problem. it is possible it is a fuse but once again I am not sure which one, can anyone help me???
  • jagrjagr Posts: 2
    I previously posted a message about my 04'Pontiac Grand Prix GT. I came to the conclusion that my car could not be completely fixed so I GOT RID OF THE S.O.B.! It felt really good to know I will never have to deal with the drama again. You know when your car is towed more times than average and you have certified Pontiac mechanics constantly working on the car telling you this and that needs to be replaced each and every time....hundreds of dollars adding to thousands....thinking your car is fixed...but, again the car starts to have the same issues...STARTING OR STALLING all over again. Your driving down the highway sunroof open...listening to your favorite music....Shittttt....the car stops(stalls)...luckily I was not in a fatal accident........You are at the store.....you go to start the car......Shittttt......the car will not start.....how humiliating is that....FYI if you continue to start the car over and over again the starter will get hot and burn out and will need to be replaced...more money to dish out.....I think the cars are made as a money trap.....the car owner contiunues to dish out money hoping this part will fix the car or get this or that part cleaned out and the starting / stalling issues will go away....HA!!! GET RID OF THE TRASH......THAT'S THE ANSWER TO YOUR QUESTION. AND NEVER BUY A PONTIAC AGAIN....the problem seems to be the same for different models......

    Best Regards and GOOD LUCK with your Pontiac!

    Oh yeah....when I turned my defroster on the fm signal would go out and when I made a left turn the car would make a weird noise each time...as if something was going to break in pieces.
  • I change the engine on my 02 grand prix, put in a used one, reconnected back to original and now it wont start. I disconnected the fuel lines and there's plenty of pressure, but when i crank it, it sounds like its not getting any fuel in the combustion chamber. Maybe there's a fuel shut reset somewhere, but I cant find it. Can anybody help me with this problem. I'll be looking for posts, thank you.
  • cnwcnw Posts: 105
    He may have been referring to the Mass Air Flow sensor. The MAF is typically installed between the air filter and the throttle body. It senses the volume of air moving thru the throttle body and tells the computer how much fuel is required for the proper air-fuel mixture. It is one of the critical components in the intake system. It is possible that it was damaged, or an electrical connection was loosened, during the changing of the air filter. It may be dirty and just require some cleaning, but be careful; they are easily damaged. Good luck. Clark
  • rodom53rodom53 Posts: 2
    I have a very similar thing going on. I have checked fuel pressure, it's approx 40lbs, the injectors ohm in about 13 or14 and I have good spark. It turns over but will only start if I spray starting fluid into the plenum. I have checked for error codes, it had a prior IAC code so I replaced that and the TPS sensor. No codes, but no starts either
  • I had a problem with my 1999 Firebird with the 3.8L V6 not starting, which I am having the same problem with my wifes 2004 Grand Prix not starting. Anyways, the problem with the Firebird was, it would start fine when it was cold but after being warmed up it would take a few cranks to get it to start and it would also backfire when letting off the gas. I took advice from the shops and other mechanics over about 9 months, changed crank sensor, coolant temp sensor, o2 sensors, checked the ignition wires, spark plugs, fuel pump, fuel pressure etc... everything checked out fine. I had no trouble codes other than 1 misfire from #2 cylinder. After it was cleared it never came back but still had the same problem. So finally I thought about it and went ahead and changed the fuel pressure regulator, even though the pressure was within tolerance with the engine off and the engine running. It fixed the starting problem and the backfiring problem, which hasn't came back yet. It took less than an hour to change, still a pain on a Firebird since I had to remove the fuel rail. But on a front wheel drive it should only take about 15 minutes with a pair of lock-ring pliers and about $50 for the regulator. I'm not saying this will definitely fix your problem, but with it happening to my wifes car after about 50,000 miles, its the first thing I am going to change.
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