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my rpm go up and down on 2003 Ford Windstar

my rpm go up and down when my car is cold

Asked by for the 2003 Ford Windstar
Fluctuating idle speed can be caused by an air intake problem or a sticking idle air control valve. Have the vehicle diagnosed to be sure.
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Fluctuating idle speed can be caused by an air intake problem or a sticking idle air control valve. Have the vehicle diagnosed to be sure.