Re: 89 302 2wd atx prblems! helP!
I'm having a similar problem with my 90 4x4 and a manual 5 speed. Sometimes, the engine will start idling at nearly 2 Grand. I unplugged the Idle Air Bypass Valve and it slowed way down, so that indicates that the valve is being "told to idle up" from what I can figure. I took the valve off and disassembled it to see if anything was sticking, but everything looks good. If you find out anything, let me know and I will let you know if I find a cure.