2003 Pontiac Grand Am Hard cold start

2003 PONTIAC GRAND AM
135,000 MILES • V6 • AUTOMATIC
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ANTHRAX91
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  • 4 POSTS
Car usually doesn't start in the mornings and if it does it takes 5 or more seconds of cranking. The weird part is later in the day when I get off work and try to start the car it always starts right up and runs fine. It also starts up fine as long as I don't let it sit overnight or for an extended period of time.

I know there is a security issue with these cars but I don't think that's it because the light is not on or flashing. I hear the fuel pump come on every time and I've tried turning it off and on a few times to make sure its primed encase the fuel pump has a leaky check valve. There are no leaks in any lines or in the fuel pressure regulator and I also put a new fuel pump relay in. I'm at a loss on what it could be. When it starts it runs fine. There is no stalling, hesitation ect. The previous owner said he removed remote start from the car so I'm wondering if that could have something to do with it? Bad wire or something?
Jul 30, 2015 at 8:04 AM
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HMAC300
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check fuel pressure with a gauge auto parts rent it. itmay be low
Jul 30, 2015 at 8:15 AM
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ANTHRAX91
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Should I test it in the morning when it doesn't start or any time during the day after it is starting and running fine?
Jul 30, 2015 at 8:44 AM
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HMAC300
  • CAR REPAIR CONTRIBUTOR
  • 48,601 POSTS
test in the morning should be 52-59 psi also make sure the fuel you are using has no more than 10% alcohol in it as that may also be the problem. 15% alcohol should only be used incars that are flex fuel.
Jul 30, 2015 at 9:38 AM