Question about 1994 Volvo 850
I have a rough idle when air condition is off - idle better when air conditioning is on.
Try cleaning the throttle body and air idle control valve (IAC). The computer kicks the idle up when the a/c is on, if your throttle body or AIC valve is full of crud it will idle very low and feel rough.
Posted on Oct 11, 2008
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Posted on Jan 02, 2017
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