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ISC Testing

deez

Well-known member
Joined
May 29, 2004
Messages
1,150
Location
Chico, CA
I have been having issues with idle and stumbling and/or stalling, so I checked the ISC. The only test I could find online was for a non turbo, but they said it should test 28-33 ohms between pins. I got 36 ohms on all pins. Now, is it out of spec or do the turbo cars test out that way. Also when digging around back there I found the EGR vacuum line disconnected. Hmmm...wonder if that was an issue /ubbthreads/images/graemlins/smile.gif
 

Terry Posten

Well-known member
Joined
Dec 16, 2003
Messages
9,009
Location
Davenport, Iowa USA
36ohms is just fine.

Do a boost leak test.

Even small throttle shaft seal leaks can cause a bad idle.
 
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