2006 ford focus 2.0l high revs when start up
vehicle revs to around 1500-2000 revs at start up will drop back to 800 but slow to do so, when pulled into gear can hear cv joints clunk, this cant be good, it is an auto we have replaced cold start module twice to no avail
idle air control valve
Check for leaking throttle body/intake manifold gaskets. The throttle body might have gunk build up around the butterfly and it is getting jammed in a slightly open position. clean out the dirt and grime and try that.
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