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2002 C5 - Hesitating during cold start

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Old Jun 18, 2009 | 04:55 PM
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Default 2002 C5 - Hesitating during cold start

I have noticed this for a while but did not worry about it much. In the day time when I start it for the first time, it hesitates before starting. But after that is seems fine when I start it again. It again happens when the car sits for a couple of hours and I try to start it again.

Today, it really hesitated when I was heading out for lunch at work. I am worried it might not start when I am heading back home.

Any clues why this is happening? Any fix? Anyway I can troubleshoot?

The car has 24,000 miles on it (2002 vert).

Thanks all.
Titus
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Old Jun 18, 2009 | 05:03 PM
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What is the state of your battery? I would look there first. I would also check all grounds and connections to the battery and starter and make sure they are clean and tight. Also check your alternator connections. Good luck
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Old Jun 18, 2009 | 05:06 PM
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Originally Posted by capevettes
What is the state of your battery? I would look there first. I would also check all grounds and connections to the battery and starter and make sure they are clean and tight. Also check your alternator connections. Good luck
While battery might be a suspect (it got discharged recently when I forgot to turn off interior lights), but why would the problem be during the first instance of starting after the car has been sitting for a while? I have tried turning it off and then starting it again and this time it doesn't hesitate.
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Old Jun 18, 2009 | 08:02 PM
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Could the check valve in the fuel pump be letting the system leak down over-night??

RonJ ...
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Old Jun 18, 2009 | 10:44 PM
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Originally Posted by RonJ
Could the check valve in the fuel pump be letting the system leak down over-night??

RonJ ...
Hmmmm ... Please elaborate .... This might just be the problem. How do I check if this is the case ?

Thanks.
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Old Jun 19, 2009 | 12:12 AM
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Did you check for codes on your DIC?
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Old Jun 19, 2009 | 08:12 AM
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Originally Posted by leowiz
While battery might be a suspect (it got discharged recently when I forgot to turn off interior lights), but why would the problem be during the first instance of starting after the car has been sitting for a while? I have tried turning it off and then starting it again and this time it doesn't hesitate.
The longer the car sits the more the battery drains. Once you have started it or driven it for a period the battery gets a charge from the alternantor. Since you had the incident where the battery ran down you may have a dead cell. I would load test the battery and replace it if necessary.
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Old Jun 21, 2009 | 12:09 AM
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Originally Posted by capevettes
The longer the car sits the more the battery drains. Once you have started it or driven it for a period the battery gets a charge from the alternantor. Since you had the incident where the battery ran down you may have a dead cell. I would load test the battery and replace it if necessary.
When I turn it on (hesitates) and turn it off immediately. And then turn it on agaun, this time it does not hesitate. Does that not mean that the battery is fine?
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