I have a question about my 2005 pontiac grand prix gt.

Asked by Jerry Apr 30, 2015 at 01:58 PM about the 2005 Pontiac Grand Prix GT

Question type: Maintenance & Repair

Basically, half of the time I start my car it starts up very weak and immediatly starts
sputtering and then dies. The other half of the time it starts up very strong. Replaced
the battery 3 months ago, and have alternator tested along with the battery just to
make sure today and both are good. Also, when it starts sputtering, if I give it gas then
it will turn over just fine.... its only when i turn the key over and thats it is when the
above happens... any help is much appreciated.

2 Answers
17,825

CamaroCollector answered 9 years ago

Clean throttle body, when was last time fuel filter was replaced? Check air filter. Is check engine light on?

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103,825

Reelin68 answered 9 years ago

Remove your Mass Air Flow sensor and clean it with a can of CRC MAF cleaner. Do what CamaroCollector said as well. Also remove your Idle Air Control valve and clean that. A bad Engine Coolant Temp sensor will also give you a hard start if it's going bad.

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