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Idle surge?


Bronco

Member
Joined
Oct 25, 2007
Messages
19
Age
49
Vehicle Year
1984
Transmission
Automatic
On my 91 explorer the idle speeds goes up and down when it is idleing, about 200 to 400rpm consistantly any ides on what may cause this? Just did complete tune up and air and fuel filter.:icon_confused:
 
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