Question about 2001 Ford Expedition

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Idles up and down about 500 rpm

It intermittenly idles up and down about 500 rpm when stopped at a redlight, moving slowly in a drive through, and even lately when parked in the driveway in park. my repair shop says his machine does not give him any codes. can you help.

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  • Anonymous Aug 08, 2008

    idles up and down about 500 rpm when driven

  • Anonymous Jan 03, 2009

    Have the same problem with my 2001 ford expedition. it usually misfire when stop at the light. my mechanic doesn't have any code to fix it.

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I had the same problem and it turned out to be cylinder one wasn't firing correctly (bad plugs). It could be any cylinder but mine was number one. I replaced the plug and it's fine now.

Posted on Aug 06, 2008

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