Last post on Oct 12, 2006 at 6:30 PM
You are in the Pontiac Grand Prix
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Pontiac Grand Prix, Sedan
#550 of 980 Re: 2005 GP Vibration in front end [mnwildfan]
Dec 21, 2005 (12:38 pm)
I have a 2000 pontiac grand prix gt with 173,000 miles. It vibrates horribly on acceleration. Mostly at about 45mph..then levels off to a tolerable vibration. If you let off the gas, the car smooths wonderfully. But again vibrates when acellerated. I've replaced the tires, and was told the drivers side hub/bearing assembly were about to fall apart. I could not tell there were any obvious problems with the part when I took it off but replaced it with a new part anyway. There was no signifant change in the vibration. I noticed it a few days after I bumped another vehichle on an icy road when the car in front of me stopped suddenly. Neither vehichle appeared damaged because we were going so slow so we both laughed and went our ways.Any ideas on the cause?
#551 of 980 Re: Grand Prix fire Dec. 18, 2005
Dec 21, 2005 (10:11 pm)
I had a similar experience on this past Sunday, Dec. 18th, my 1999 Pontiac Grand Prix GTP, went up in flames, just 20 minutes after I parked it in my garage. Never had any major problems with it, and up until then, had loved the car. My husband and father in law saved our house from going up, but it was a tough battle. If it had happened any later at night, we could have had a very different outcome. I'm outraged to read about all these occurrences, and I think something has to be done now.
Please email me if anyone is organizing something, I'm happy to help organize as well.
#552 of 980 Re: 2005 GP Vibration in front end [scapagliata]
Dec 22, 2005 (3:21 am)
Today we replaced the front, lower end tie rods. No change. This is getting frustrating.
#553 of 980 2000 Grand Prix with the "shakes"
Dec 22, 2005 (6:32 am)
Sounds like a motor mount, or one or more cylinders possibly not firing, seeing that it's happening during acceleration. Good Luck!
#554 of 980 Re: 2000 Grand Prix with the "shakes" [mharrington]
Dec 22, 2005 (6:33 pm)
Got an appointment with the dealer next week, I'll let you know the outcome. I drive 700 miles each week to and from work. I just need it to make it a few more months then I'll get a new one. I just hate to buy one right now because by May (school teacher), I'd have 30,000 miles on it. Thanks for the input. Will post next week.
#555 of 980 stalling out and power surging
Dec 23, 2005 (11:59 am)
I have a 2000 Grand Prix GT and we replaced the battery a few weeks ago. It was fine after that until last week when I was driving to work and the car "dinged" at me about three times, then stopped, and everything was fine again after that. A few days later, the "Service Engine Soon" light came on. It was still driving fine that day, but the next day the light was still on and that's when the car started sort of power surging while driving and I also could hear a high pitched "whirring" noise from the engine. That night, the car turned off when turning a corner. Now it is surging very badly while driving, especially if you have stopped or slowed down, and it occasionally turns off as well. The Service Engine light has turned off though. Have a mechanic friend looking at it right now but any thoughts as to what this could be? So far I've had people say that it could be "loosing it's ground" but I'm not sure what this means, or that it could be something w/CO2? Help! Thanks!
#556 of 980 2001 Grand Prix door lock problem -- unlocks at random
Dec 23, 2005 (2:22 pm)
My 2001 Grand Prix recently started experiencing a problem with the doors unlocking automatically after putting the car into gear. The problem started soon after I took it in for its regular servicing. After I put the car in drive, the locks will unlock themselves every few minutes, sometimes several times in a row. Aggravating and unsafe. The dealer said it didn't happen when they took a look (of course), and it cost me $77. Frustrating! Anyone have any ideas?
#557 of 980 Re: 97 GRAND PRIX , NO POWER [vette0]
Dec 23, 2005 (9:01 pm)
I own a 97 GP GT and the CEL came on. I did a scan and it said the fault was TPS/PEDAL POSITION SENSOR problem. I replaced the tps and it still comes back. I saw this post and was wondering if you found out what caused and what cured your problem? Or does anybody else have any ideas? Thanks!
#558 of 980 Re: HELP! serious hesitation, rpm's move up & down, shifts kinda hard and slow [tlg1]
Dec 24, 2005 (7:48 pm)
Our 1999 GrandPrix 3800 V6 does the same re: the hesitation/rpm fluctuation, especially when trying to accelerate after slowing on an interstate off ramp or if it's really in a pull. You feel it surging, can watch the tach jumping up and down, like it's hunting gas, and have to let up on the gas, then give it gas after it downshifts for it to smooth out. Most of the time after that it acts ok, though you wonder if one day it is going to continue to surge and not stop. It started at about 90M miles, and after two trips to independent garage and no answer, replaced fuel filter at 98M. At 100M, replaced all spark plugs/wires. At about 108M, took to GM dealer who "didn't show any codes, could not duplicate problem". Shortly after tried a bottle of transmission fix product on another mechanic's suggestion even though I didn't feel a trans problem. None of these has helped, so while I don't know what it is, I know what hasn't helped. Unfortunately, if "the computer" can't pinpoint the problem, the dealer/garages don't know what to do with it.
#559 of 980 99 Grand Prix GTP Problems
Dec 26, 2005 (3:58 pm)
My boyfriend and I were driving back home and all of a sudden the car just shut off. It took us forever to start it again. We did Neutral drops to get it to go....Yes I know that is bad for the tranny....But it kept on shutting off. I was getting alittle pissed off....So We tested the Alternator and the Battery thinking that it could be the charging system....But nope Both are fine...People that I know are telling me that it could be the Head Gasket or the Crank Sensor!!!! Help me Please I want my boyfriend back......hehe that car get more attention then me!