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#1
03-08-2006, 02:14 PM
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Car shuts off @ cold start
after i let it sit overnight i find i have to let it run while revving the engine or it will cut off, or when i pull off too soon w/o letting it warm up, the brakes aren't good and it cuts off @ a stop sign or a red light... but once it warms up, it's fine.
wth is the problem? 
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#3
03-08-2006, 02:51 PM
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Re: Car shuts off @ cold start
It would be helpful to post the year, model and mileage of your Grand Prix so people can weigh in to help.
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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines
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#5
03-08-2006, 03:45 PM
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Re: Car shuts off @ cold start
First things first, how long has it been since you tuned it up (plugs, wires, fuel filter, pcv, air filter, etc...)? Start there if it's been a while. The 3.4 DOHC had lower intake vacuum leak issues. When the engine is cold, everything is shrunk, and the problem will be worse. When the engine warms up and the metal expands, the problem will lessen, possibly even go away. Spray carb cleaner around the base of the intake, and if it causes the idle to change, you found your problem.
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 Still waiting for the "good old days" I'll get to bore my future grandchildren with!
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