superdave38250

ANY IDEAS OR QUICK FIX FOR A VERY HIGH AND LONG HANGING ENGINE RPM?

86 5.0L

RUN KOEO/KOER TEST, ALSO PLEASE BE SMART AND REMOVE THE CAPS LOCK, ITS VERY ANNOYING TO PEOPLE WHO READ IT.

KTHXBAI

Bubba 95SN

Check codes, fix codes, disconnect neg battery terminal for 5 minutes, relearn it to idle. Clean the tb and air bypass.

superdave38250

Tried several times no luck. I have checked the tps voltage which is in spec, i have checked for a signal to the iac its good. the iac had been replaced for a hanging idle from the guy i got the car from but that didnt help either.

I went through the diagnostic chart and and it says when you unplug the iac the car should stall. It doesnt it actually ides nice. And no there are no vacuum leaks, none.

i heard somthing about throttle plate plugs? to plug the little holes in the throttle plate? and then adj idle. Has anyone heard of this?
i dont mind the iac being unplugged but i think im losing to much rpm between gears without it.

AdderMk2

you need to perform a base idle relearn... sounds like some dickface was messing with the base idle screw

86 5.0L

this...

dont use a band-aid fix, the cars didnt need those TB plugs you're talking about from the factory to idle properly.