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steele13

steele13 1/5/2013

1988 Honda Prelude 2.0 Si 4WS 4 Cyl 2.0L

Engine

The idle on my vehicle revs up and down repeatedly when it reaches operating temp. What could it be?

I believe it is the electronic Air Idle Conrol Valve but wnt to see if anyone has come across this problem and may know exactly what problem may be.

1 Answer


Jimm

Jimm 1/5/2013

Quite possibly the IAC valve is faulty, may also be related to a simple engine vacuum leak or hose connection. Check these things first before replacing the IAC valve.
Try the many on-line auto parts sources, such as; www.autopartswarehouse.com or www.rockauto.com for the replacement parts. For example, they (RockAuto) list the IAC valve for around $146.00 for your vehicle.
They (Rock Auto) list the

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