Idle Stabilizer Valve, how tight?

Gene Caldwell gene.ghc at
Thu May 30 22:48:24 EDT 2002

Phil Rose wrote:

> At 9:56 PM +0200 5/29/02, Claus Vegener wrote:
>> Got the code 2231 and pulled the valve.
>> It works with 12 V on it,
> You may want to take care if using 12V for ISV testing. I  recall
> reading that the ISV isn't intended to see a full 12 signal from the
> ECU, and that a sustained 12V can cause damage. Better to test it
> with no more than a 9V battery. Perhaps this is not an issue--can
> someone clarify?
> Phil
> --
> Phil Rose
> Rochester, NY
> mailto:pjrose at

I have used an old 9v radio battery with very good effect.


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