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Pontiac Grand Prix, Engine, Sedan
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#72 of 360 Does ANYBODY have these 2 same problems?
May 27, 2008 (8:56 pm)
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...
#73 of 360 Re: Intermittent Starting problems w/2000 Grand Prix GT [neustkg]
May 27, 2008 (9:12 pm)
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...
#74 of 360 Re: Stalling when warm [swanny3]
May 29, 2008 (9:04 pm)
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.
#75 of 360 Re: Stalling when warm [yepastreflecti]
May 30, 2008 (10:24 am)
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.
#76 of 360 Re: 2004 Grand Prix starting and DIC problems. [danid]
Jun 05, 2008 (5:21 pm)
Did you ever figure anything out? I have a 2004 also and mine does the exact same thing?
#77 of 360 Re: 2004 Grand Prix starting and DIC problems. [fasteddy1980]
Jun 05, 2008 (9:35 pm)
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.
#78 of 360 2003 Pontiac Grand Prix GTP that dies mysteriously?
Jun 08, 2008 (12:11 pm)
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....
#79 of 360 Re: 2003 Pontiac Grand Prix GTP that dies mysteriously? [ghosthost13]
Jun 08, 2008 (2:41 pm)
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.
#81 of 360 1991 Pontiac Grand Prix SE Need help !!!!!!!!
Jun 05, 2008 (7:48 pm)