Hey guys, I have a weird idling problem on my '85 22RE. When I first start the truck, it will idle at about 400-500 RPMS and just die... if I crank it a few more times, it'll stay running, but at a very low RPM. Something I recently found out though, was if I first start the truck, turn the A/C on for about 2 seconds, then turn it off, it'll idle fine the whole trip. It's weird, it seems like the idle up sensor/valve stays on when you turn it on/off real quick.. is that possible?

Well, if anyone knows of anything to fix this, let me know, please!

Thanks
-Nick

Possibly a bad auxiliary air valve- try pinching the air hose from it to the throttle body when it's cold and running to see if it dies. If so then it's probably good. Try pinching it again when the engine's warm- it should only drop 50 rpm or so.

Also, have you checked the idle screw just to be on the safe side?