Originally Posted by kiweenis

Not trying to hijack your thread. But I think I have the same issue with my vehicle. The switch wires broke on my radiator temperature sensor switch. I haven't run the vehicle more than 10 minutes since. Even though it's summer it now won't hold idle. After starting just fine. I do want that switch replaced because I live in Denver and I'd like to drive it in the winter.
Do you happen to have a source for that replacement part?
Thanks.

Originally Posted by jvargas

I meant to respond to this thread months ago. I have the same issue on my 89 NA GXL that I fresh rebuilt including the intake. I've done everything recommended and still no luck. I guarantee it's a vacuum leak that I somehow missed after smoke testing my intake the first time. I seriously cannot figure it out, any chance your located in the Ohio region? I'm dying to figure this out

Originally Posted by FührerTüner

Whenever I'm workng on a unit with a vacuum leak, I pull everything intake related from the keg to the air filter and replace all gaskets and hoses. It's like 200 bucks but eliminates vacuum leaks as a variable. Also, use the metal 3-layer gasket for the LIM, not the paper one.

Originally Posted by jvargas

I did the full intake gasket replacement, but put gasket maker on the paper gaskets during install which should be fine. I just need to find a way to smoke test the system again to put myself at ease.

Originally Posted by FührerTüner

(Carefully) Spray carburetor cleaner in areas around the intake while the engine is idling. If the RPMs change then you have a vacuum leak still.

Originally Posted by jvargas

Trust me, that was the first, second, and last thing I tried to no avail.