2001 Chevrolet Lumina Logo
Posted on Mar 28, 2009
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Service engine code indicates EGR valve.

1998 Chevrolet Lumina, 3100 V6, service engine code indicates an EGR valve problem. I installed a new EGR valve and reset the check engine light using an OBD II code reader. The light clears but after running a short while, the service engine light comes back on and again indicates that the EGR valve is faulty. What am I missing? Thanks.

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  • Dave C
    Dave C May 11, 2010

    The intake is probably plugged and exhaust cannot get through the passage. You could try removing the valve and cleaning it out with a piece of wire and carb cleaner.

  • Anonymous Mar 12, 2014

    cleaned the egr valve and replaced it also.

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  • Posted on Mar 28, 2009
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You could have a restriction in the egr ports. remove the valve. Plug the holes, start engine. 1 hole will be blowing out exhaust, the other will have large vacuum.

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