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    surge at idle when warm

    I have a 1996 explorer sport 4.0L 4x4 . The engine surges at idle when in "D" or "R" . Some times the surge is mild and other times it feels like it is going to quit running . Back in January I had the problem , I was asked to check the vacuum hoses and I found that the "PCV" hose was...
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    1996 explorer surging at idle

    I have a 1996 Explorer 4.0L automatic 4x4 . the engines surges at idle when engine is warm and when in drive . I have changed spark plugs and wires , idle control valve , smoke tested for vacuum leaks twice , no leaks found , changed all 3 o2 sensors , that did improve some but surge is still...
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    1996 explorer surging at idle

    I have a 1996 explorer 4.0L automatic 4x4 , surges at idle when engine is worn and when it is in drive . when engine is cold , everything is normal . I have changed spark plugs and wires , smoked twice twice for leaks , no leaks found . idle air control sensor changed , all 3 o2 sensors changed...
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