Question about 1995 Pontiac Firebird

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Hard to start in the cold

The car has 138,000 miles on it, but the engine is generally strong. This problem just started. It starts easily when it is warm. Just hard to start when it is cold. Pulled open air intake, found some carbon in throttle body and cleaned out, but no luck.

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  • rogerwbutler Dec 27, 2008

    It takes about 3 attemps at about 6 to 8 seconds each. I t starts to sputter as it is about to start. I have one question though. The small sensor that is in the cold ai intake line after the filter, what is its function? Should it be pulled and checked?

  • rogerwbutler Dec 28, 2008

    I pulled the sensor from the air intake and cleaned it. There was a buildup on it. It's very small so I don't believe it is the Mass airflow sensor. Since I cleaned this sensor, it starts right up. It seems to be resolved.



    Thanks

  • kevin carpenter May 11, 2010

    its either the mass air flow sensor our intake air temp sensor. either one could be a problem , do you know your fuel pressure ? whens the last time the fuel filter was replaced?

  • kevin carpenter May 11, 2010

    hi iam kdc744, by hard starting cranks a long time before starting?

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  • 41 Answers

I believe it's your Throttle Position Sensor.

Posted on Apr 21, 2009

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