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C5 Hesitant to Start

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Old Sep 18, 2024 | 01:34 PM
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Default C5 Hesitant to Start

Not sure if I’ll explain this correctly, so feel free to ask clarifying questions!

During a cold start, I have noticed lately that my ‘99 FRC will hesitate to start at first. I turn the key and let the fuel pump prime, then when I go to start it, it turns over and tries to start a few times (sometimes backfiring) before finally coming alive. It only ever does this during a cold start. If I get it up to operating temperature and shut it off, it will fire right back up with zero of these symptoms.

Any suggestions of what to look for and potentially replace? Ive only owned the car for a little over a month so minus an oil change, I have not went through the car.

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Old Sep 18, 2024 | 03:59 PM
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Ignition related I think !
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Old Sep 18, 2024 | 04:18 PM
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On my DD '04 Murano, I occasional had a similar problem. Doing an 'old school' carbourator days work-around, I pump the gas pedal once before starting. Have had no further problems starting the car..
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Old Sep 18, 2024 | 04:52 PM
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May be a crank sensor but if you just want to replace parts you can try that…the crank sensor signals the fuel and spark.

Last edited by C5 Diag; Sep 18, 2024 at 04:58 PM.
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Old Sep 18, 2024 | 04:56 PM
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Originally Posted by rrwirsi
On my DD '04 Murano, I occasional had a similar problem. Doing an 'old school' carbourator days work-around, I pump the gas pedal once before starting. Have had no further problems starting the car..
On a car with an electronic throttle body you’re not injecting any fuel before starting the car so I don’t see how that would work…all you’re doing is opening and closing the throttle plate.
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Old Sep 18, 2024 | 05:00 PM
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Originally Posted by C5 Diag
On a car with an electronic throttle body you’re not injecting any fuel before starting the car so I don’t see how that would work…all you’re doing is opening and closing the throttle plate.
OK, I am NOT a tech guy, just saying it worked on my 04 Murano. If i do not do it, then I have hard starting. Sometimes things happen without explication. Just saying.
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Old Sep 19, 2024 | 08:03 PM
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Originally Posted by C5 FRC
Not sure if I’ll explain this correctly, so feel free to ask clarifying questions!

During a cold start, I have noticed lately that my ‘99 FRC will hesitate to start at first. I turn the key and let the fuel pump prime, then when I go to start it, it turns over and tries to start a few times (sometimes backfiring) before finally coming alive. It only ever does this during a cold start. If I get it up to operating temperature and shut it off, it will fire right back up with zero of these symptoms.

Any suggestions of what to look for and potentially replace? Ive only owned the car for a little over a month so minus an oil change, I have not went through the car.

I had this issue on a work truck, first start of day took several tries, once it started the truck would restart fine all day.

Turned out to be some failed check valve letting fuel pressure bleed off overnight, that’s what the mechanic shop said, of course they replaced the complete fuel pump, sender assembly and it was good to go.

Or it could be what others have mentioned as well, have a fuel pressure tester kit?
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Old Sep 20, 2024 | 09:37 AM
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Moved to C5 Tech.
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Old Sep 20, 2024 | 11:13 AM
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1) Pull and post your codes: http://www.stengel.net/diccodes.htm
2) Evaluate fuel pressure at the rail before cold start




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