2003 Chevrolet Impala Logo
Posted on Dec 16, 2010
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Chevy Impala stalls while driving down the road, then restarts immediately, after surging. Replaced the battery yesterday,and now the service traction system light is coming on. Very dangerous stalling at 50 mph. What could the problem be?

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George Hels

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  • Master 528 Answers
  • Posted on Dec 16, 2010
George Hels
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Joined: Jul 13, 2010
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First off I would suspect the fuel filter. You didn't state how long it runs before it stalls but I think it's not more than 10 minutes or so. It could also possibly be the Mass Air Flow sensor, but I really don't think that is it. If it was sputtering then I would check the Exhaust Gas Recirculating valve for clogging - a hands on diagnostic is really the best bet, unless you haven't changed the fuel filter in a while, in which case I would change that just for general measures and improved MPG. I recommend going to your local shop and have them clear the codes from the computer to see if the service light was just a glitch from changing the battery! If it comes back then you'll need to have the computer scanned to see what codes it's throwing out. Hope this helps!!

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