86whitepony

so after fixed my no start my car idles at 3000 rpm when i unplug my map it goes down to 1900 rpms it still drives and such but i can't seem to lower the revs down. i fixed my vac leaks and i dunno what to do next any ideas?

FoxGT

Did anyone do a mass air swap on the car or is it still speed density?

If its still sd you need that line connected to the map that's a major part of it's reading & telling it how much fuel to put with it.

Look at the throttle body & see if it's closing completely if not something is causing the cable to get in a bind or perhaps your idle needle is turned WAY up. If not check for holes in the throttle body (some people drill holes in the plate to fix bad idle problems) & let us know if there are any.

Cleaning the iac may help if it's stuck open.

I know you said you checked the vacuum lines, can you hear a vacuum leak though? A friends car I worked on ended up having one of the metal tubes broken off on the bottom part of the upper intake (it's a slim possibility, but if you can hear a leak it's possible) You could feel around underneath there while the engine is on & listen for a change in sound. That's after you check the rest though.

That's all that I can think of that would cause the idle to be high atm... Check those & let us know.

redpony88

his car is still sd, one of the other techs i work with said try unplugging the electronics on the map and see if it does anything, and well it dropped it but we plugged in the map from my fox and it did the same thing so we know it's not the maps fault, i havent heard any vaccume leaks especially one that could cause it to idle THAT high, i had one on my fox that was pretty big and all i did was surge constantly. it had been idling fine before his car wouldnt start, we did a tfi and restabbed the dizzy with that acticle on here, cap and rotor, fuel psi regulator, fuel pump, fuel filter, then finally the coil and that did it but then it sits at 3 grand... i was wondering if we had stabbed it at the wrong point. idk

brentloftis

A shot in the dark but when you had the throttle body off did you disconnect the ACT sensor and if so is it re- connected, along with the coolant temp sensorand canister purge?Also have you checked TPS?

FoxGT

Whether the car is sd or mass air will play a big role in how vacuum leaks effect idle. sd cars take more kindly to leaks.

as far as if it's a big leak, bigger ones are generally the ones that are quieter. You could check to make sure all of the vac lines are plugged in & make sure none are torn off.

As for the timing I don't know about whether or not it will make it idle that high... I've advanced one & it idled at 1900rpm but never seen one idle higher than that.

Is it possible that there was a problem with the car & so the idle screw got turned up quite a bit then the problem got solved so it's making the idle up very high?