Question about 1995 Pontiac Bonneville

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95 Bonneville won't start when hot

I have a 95 Bonneville that when I drive it and park it for 20 - 30 minutes is hard starting or won't start untill it cools down. It acts as if it is flooded. 10 minutes it will start, an hour it will start. 20 -30 minutes forget about it. It's really mindboggeling.

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  • Charlie Troy
    Charlie Troy Mar 09, 2009

    No, it has fuel injection not a carb., but if it had a carb that's what I would do because that is what it acts like. Like it's flooded.

  • Charlie Troy
    Charlie Troy Mar 09, 2009

    I actually have tried that being from the "old school" it didn't seem to make a difference. I haven't tried it lately though. Usually was because i was p!$$ed off and stood on the peddle. I have not been able to find any kind of fuel regulator. Is there one and if so could that be the culprit?

  • Clint Smock
    Clint Smock May 11, 2010

    If you hold the accelerator to the floor will it start?

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  • 4,669 Answers

Yes I know, but If you hold the accelerator pedal to the floor on a fuel injected car, the Throttle position sensor will tell the computer to enter clear flood mode. Then the computer will shut off the fuel injectors while you have the pedal to the floor. If it is flooded, you should be able to get it started in clear flood.

Posted on Mar 09, 2009

  • Clint Smock
    Clint Smock Mar 09, 2009

    Yes it does have one and that is what I was thinking was wrong. It is on the fuel rail and has a vac line going to it. Pull off the vac line and see if you have any gas in the vac line or gas seeps out of the regulator at the vac line fitting, If it does replace the regulator.

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