Question about 2000 Chevrolet Impala

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I have a 2000 Chevy Impala LS 3.8L and it dies when driving it down the road and won't start again. When we get it to the garage and it sits for a while it starts right back up and nothing shows up on the scanner. I take it home and everything is fine but in a week or two it does the same exact thing.

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  • Mike Butler
    Mike Butler Mar 31, 2011

    Has anyone had an opportunity to do a fuel pressure test when it won't start? I have had situations where it takes a fair drive on a warm/hot day in order for the fuel pump to heat up and quit pumping, even though you can still hear it humming. Sit in the shade for 20-30 minutes and it cools down enough to pump back up to pressure and away it goes. Worked good on cold days.

  • jjansen448 Mar 31, 2011

    Mine happens in all temperature I live in Minnesota and it is happening when the temp is below 32. Also it happens within 3 miles of the time I start driving it, so it doesn't have time to heat up . Thanks for the response though

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  • Chevrolet Master
  • 6,674 Answers

A little shot of quick start, or WD-40 in to the throttle body intake when it won't start, will at least let you know if lack of fuel or spark is your culprit. If it fires up for a second or so after a spray, then it's fuel delivery related. Helps mechanic narrow down area of trouble.

Posted on Mar 31, 2011

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