[urq] Bad ISV Causes Racing Idle?

[SpotatAshleys]

Todd
They can get gunked up with sticky oil vapour residue and ceased to function
but check the integrity of the wiring to and from it first.
regards

Keith



----- Original Message -----
From: "Todd Phenneger" <tquattroguy at yahoo.com>
To: "urq list" <urq at audifans.com>
Sent: Sunday, August 10, 2008 5:10 AM
Subject: [urq] Bad ISV Causes Racing Idle?


> Hi,
> The MC-1 I have in my 4ktq started idling at about 3,500 suddenly.  I have
> tracked it down to what I think may be a bad ISV.  When I unplug the ISV,
> nothing happens.  But if I pinch shut the hose that goes to the ISV, then
> the idle drops and if I don't release it then the engine will die.
>
> If the ISV was stuck in the open position, would that cause this?
>
> I'm sure everyone is out in Colorado having fun, wish I was there.
>
> Todd
>
>
>
>
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