Idle Stabilizer Valve, how tight?

Claus Vegener vegener at
Thu May 30 17:25:48 EDT 2002

Thanks Phil
I pushed the rubber enclosure-fittings to read
the Bosch label before testing. Label : 12 V
And I only apply with banasticks a few seconds.
I have not checked the voltage needed to actually close
the valve - I think it is a duty cycle like everyting else.
----- Original Message -----
From: "Phil Rose" <pjrose at>
To: "Claus Vegener" <vegener at>
Cc: "audifan20v" <200q20v at>
Sent: Thursday, May 30, 2002 3:50 PM
Subject: Re: Idle Stabilizer Valve, how tight?

> 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
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