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-   -   Where is the ISV = Idle Stabilization Valve (http://forums.pelicanparts.com/porsche-964-993-technical-forum/386229-where-isv-idle-stabilization-valve.html)

Atlantic07 01-08-2008 07:53 AM
Where is the ISV = Idle Stabilization Valve
 
I know I should have bought the repair book and I will !

Can anyone give me a hint or send a picture where I can find the ISV on my 1991 964 C2. Symptom is that when it is cold, I have to start the car 2 or 3 times.

Thx guys!

kang 01-08-2008 09:11 AM
It’s right by the throttle body. It’s a little silver cylinder. There are air hoses going from before the throttle body (but after the air flow meter) to the ISV, and then from the ISV to a point just past the throttle body.

kang 01-08-2008 09:12 AM
This DIY is for a 993, but it should give you the idea.

http://p-car.com/diy/isv/

Atlantic07 01-08-2008 11:39 AM
Thx ...
 
... I found it and it seems a little easier on the 964 than on the 933, which is good news!

I'll do it later this evening and will report if it changed anything.


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