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post #1 of 9 (permalink) Old 10-23-10, 03:05 PM Thread Starter
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engine howling bad

Thanks for all replies in advance. My idle air control value went bad and the check engine light came on and my engine started howling. I have replaced the valve but the engine is still howling. The check engine light has gone out. What can be causing the howling now?

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post #2 of 9 (permalink) Old 10-23-10, 05:04 PM
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Re: engine howling bad

Where does it seem to be coming from? Could it be a drive belt or one of the accessories??

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post #3 of 9 (permalink) Old 10-23-10, 06:16 PM Thread Starter
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Re: engine howling bad

no its coming from the intake manifold.
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post #4 of 9 (permalink) Old 10-23-10, 07:02 PM
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Re: engine howling bad

There must be a gasket or hose leaking. Spray WD40 around where you think it's coming from and see if you can pin it down.

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post #5 of 9 (permalink) Old 11-06-10, 09:47 AM Thread Starter
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Re: engine howling bad

I have sprayed WD40 around the valve and check for vacuum leaks. This morning I removed the valve and the throttle body checking for damage, broken gaskets, bad wiring and just about anything else I could think of with no luck. I cannot find anything that says this valve needs any procedure to set it. Does anyone know if I need to do something special to set it?
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post #6 of 9 (permalink) Old 11-06-10, 12:08 PM
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Re: engine howling bad

What valve is it?

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post #7 of 9 (permalink) Old 11-06-10, 12:25 PM Thread Starter
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Re: engine howling bad

Iacv
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post #8 of 9 (permalink) Old 11-06-10, 04:25 PM
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Re: engine howling bad

You don't set it. The PCM adjusts it by watching engine RPM.

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post #9 of 9 (permalink) Old 11-14-10, 02:50 PM
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Question Re: engine howling bad

Any chance you can do a video recording of it and post it here??? Is it the same 2002 with the 3.8L that you had the gas cap issue with??? Try removing the belt to start and see if the noise goes away. If it does, spin each pulley to see which one feels rough.

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