2003 Pontiac Grand Am Hard cold start

Tiny
ANTHRAX91
  • MEMBER
  • 2003 PONTIAC GRAND AM
  • V6
  • AUTOMATIC
  • 135,000 MILES
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?
Thursday, July 30th, 2015 AT 8:04 AM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fuel pressure with a gauge auto parts rent it. Itmay be low
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Thursday, July 30th, 2015 AT 8:15 AM
Tiny
ANTHRAX91
  • MEMBER
  • 4 POSTS
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?
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Thursday, July 30th, 2015 AT 8:44 AM
Tiny
HMAC300
  • MECHANIC
  • 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.
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Thursday, July 30th, 2015 AT 9:38 AM

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