Question about Chevrolet Corvette

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When cold RPM's very about 300 to 500 if I try and drive the car it will backfire and has very little power. After it warms up the car runs perfect like there is nothing was wrong. This is a 1985 corvette FI 350

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  • dmodar Oct 08, 2009

    Are there two different coolant temperture sensors
    one for the PCM and one for the gauge? The gauge seems to be working fine.

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  • Chevrolet Master
  • 6,674 Answers

I think I'd be looking at the coolant temperature sensor. It supplies info regarding engine temperature, thus regulates fuel accordingly. If it tells PCM, that engine is already warm, when still cold, it can cause those conditions as well as others.

Posted on Oct 08, 2009

  • Mike Butler
    Mike Butler Oct 08, 2009

    Usually one back of engine on passenger side for gauge. and one up front near throttlebody area, for PCM.

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