Vehicle idles eractically in park from 900K to 15K back and forth all the time. With Aux Air Valve house pinched idle ok.
What's the problem?
Eratic Idle in Park 89 Volvo 760T
Oct 20, 2004
3 Replies
I would suggest that the inlet tract (including Idle Air Control Valve ) is in need of a thorough clean up. VOC recommend task is done every two years to keep system on the ball.
Cheers, Peter.
I replaced the tract and value with a new one. Same problem.
Any other suggestions
Do you mean that you replaced all the inlet tract from filter to manifold? The idea is just to clean it thoroughly. This includes the MAF, throttle body, throttle stop microswitch and Idle Air Control Valve along with all the hosing and electrical connectors. It is a good idea to ensure that the PCV system is also clean and clear.
Cheers, Peter.
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