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Every time I shut the door or the hood the idle fluctuates? Why?

(1990 Ford Taurus)
in Gastonia, NC on November 30, 2013
also driving down the road the car just cut off and wont start for a few hours.I check the codes there's no codes its been tuned up and I had the fly wheel replaced recently. Battery n alternator is good
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of Gillespie's Auto Service on December 01, 2013
In the shop I would take that information as far as to see if it does it for me, which is all about confirming the symptom as described. Provided I do get it to act up, I'd then start testing for what is changing when the door closes, and some kind of a loose connection would be highly likely. Things like main power or ground connections could do this so measuring for a voltage drop across them or simple wiggle testing would be applicable.
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of Gillespie's Auto Service on December 01, 2013
In the shop I would take that information as far as to see if it does it for me, which is all about confirming the symptom as described. Provided I do get it to act up, I'd then start testing for what is changing when the door closes, and some kind of a loose connection would be highly likely. Things like main power or ground connections could do this so measuring for a voltage drop across them or simple wiggle testing would be applicable.
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