Question about 2003 Chevrolet Impala

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Warm start up problem on 3.8L engine 76,000 miles

When the engine is warmed up (not sitting overnite). When you go to start it the first time it runs for about a second and dies. The second time you start it, it starts right up and runs fine. This has been going on for about three days now. This morning I noticed when I was sitting at a light with the brake on the rpm's went up and the car wanted to lurch forward. I had to put extra pressure on the brake to keep it stopped. It only did this once.

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  • impalaman Aug 27, 2008

    IAC & EGR were cleaned. TPS was replaced. Problem still exists.

  • impalaman Sep 16, 2008

    Just wanted to let everyone know the solution. It was the crankshaft position sensor. When it got warm it was failing. Changed it out and now everything is good.

  • plastic May 11, 2010

    This could be from many things from the engine needing a tune-up to a failing sensor or switch. I don't have an answer for you. I do appreciate you asking me, but you may get better results if you post this in the general area. Good luck.

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  • 422 Answers

Have someone check the idle control valve

Posted on Aug 26, 2008

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