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2007 pontiac grand prix 3800. Reduced engine power. Codes
2007 pontiac grand prix 3800. Reduced engine power. Codes P1125, P2125, P2128 still come up after changing throttle body. changed throttle pedal still had the same problem. car idles fine in park. put… read more
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Reduced engine power warning comes on the display. Can't keep it running. I replaced the MAF sensor. Car started right up but as soon as I try to put it in gear, it dies. … read more
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Vocational, Technical or Trade Scho
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I'd just had my oil changed, and a bracket on my exhaust
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My 04 Pontiac grand prix gt makes a real loud electric
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Vocational, Technical or Trade Scho
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2003 pontiac grand prix gtp stalls at lights sets codes that
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Dr.carz
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Pontiac Grand Prix GT: I have a 2001 Pontiac Grand Prix GT,
I have a 2001 Pontiac Grand Prix GT, it recently started stumbling sporadically at any speed or rpm but lasts only a second, will also do this at idle in park. Putting the car in reverse often makes i… read more
Ron
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Pontiac Grand Prix GTP: I have a 2004 Grand Prix GTP that starts
I have a 2004 Grand Prix GTP that starts fine when its cold and after it has been driven and warmed up if it is shut off and restarted about 50% of the time it acts like it wants to flood itself and s… read more
BOBBYSS
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2000 Pontiac Grand Prix GTP. DIC started getting intermittent (on/OFF), go to zero, pop back to working again. I replaced it with a used one from internet and it pretty much did the same thing for a w… read more
Dave Nova
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2005 grand prix: lost power..real rough,..car runs fine..throttle body
Hi, was driving home before and my 2005 grand prix lost power (dash warning said reduced engine power) car stalled, pulled over and started it, ran real rough,, got him and got a code U0107,, it reset… read more
Canadafix
Canadafix
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2000 Pontiac Bonneville: a 3.8 liter (non-SC..fires right..dies..P0101
I have a 2000 Pontiac Bonneville with a 3.8 liter (non-SC) When I try to start it, it fires right up, then immediately dies. I checked the Diagnostic codes and came up with P0101 and P0108. I checked … read more
GM Tech (Cam)
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2002 Pontiac Grand Prix: the front cylinder head..knocking..goes away
I have a 2002 Pontiac Grand Prix, 3.1 L. It knocks on a cold startup in the front cylinder head, after a minute or so the knocking or tapping goes away. I just had the hydraulic lifters replaced and i… read more
Bill
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2003 Pontiac Montana: Van..3.4L..The check engine light is..P0171
I have a 2003 Pontiac Montana Van with a 3.4L engine. The check engine light is on with a P0171 and P0300 codes. It is causing a roughness at idle and more so when the foot brake is engaged. In resear… read more
Ted G.
Ted G.
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2000 Pontiac Grand Prix: automatic..steady tap..lopes..really rough
I own a 2000 Pontiac Grand Prix (3.8 L) automatic. recently, I have noticed that there is a steady tap, tap, tap when the engine is running. At idle, the engine lopes and sounds really rough. During a… read more
hauto
hauto
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2004 grand prix: water pump today..throttle body..hood..pedal for me
2004 grand prix 277000km changed water pump today, was overheating from loss of coolant i cleaned the throttle body right away while under the hood, unplugged the MAP and TPS because didnt have anyone… read more
GM Tech (Cam)
GM Tech (Cam)
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Vocational, Technical or Trade Scho
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2002 Pontiac Grand Prix GTP: swapped the engine..shifting..maf sensor
I just swapped the engine out of my 2002 Pontiac Grand Prix GTP, with a 99 Buick Riviera (both supercharged), and although the engine fit fine, and runs well, the car continues to stall when decelerat… read more
Anthony
Anthony
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Vocational, Technical or Trade Scho
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2002 Pontiac: first start..a morning the lifters knock..oil level
When I first start my car (2002 Pontiac Gran Prix GTP) of a morning the lifters knock. I have checked the oil level in the car and it says it is full. After the car has run for about 2-3 minutes they … read more
Anthony
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2002 Pontiac: Prix..Master Air Flow Sensor and found it faulty
I have a 2002 Pontiac Gran Prix with the 3.6 liter V6. The engine started stalling and would not stay idle. I checked the Master Air Flow Sensor and found it faulty. At the same time I checked the cat… read more
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Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

Pontiac Technician

2,410 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Dave Nova

Dave Nova

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Gary

Gary

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15 years GM master tech/15 years ASE master

Don - Mo Lurch

Don - Mo Lurch

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567 satisfied customers

GM, Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

John

John

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ASE A1-A8 w/L1 GM master technician.Factory certified/40 years experience

Chris (aka- Moose)

Chris (aka- Moose)

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16 years of experience

car tech

car tech

ASE Certified Technician

446 satisfied customers

25 years master tech and shop owner

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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