Question about 1991 Ford Explorer

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Help! my 1991 ford explore turns over when it is cold out but will not try to start. when it warms up outside, it starts with no problem. I tested the plug wires with a tester and there was very little spark. could it be the coil pack going bad?

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  • jesse lunt Jan 15, 2009

    it wont start at all when cold and hard when warm had week spark so replaced the coil pack plugs and wires no diffrence

  • edgar walker
    edgar walker May 11, 2010

    did you check the spark plugs also and not just the wires?

    if so then it could be the coil pack or the plug wires

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I can't promise but it sounds like the egr valve is malfunctioning it is what more less replaces the choke that would have been there if the engine was carbaratedbut if it is not the egr it might be mass air flow sensor or the map

Posted on Mar 01, 2009

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