cezr75

hi everyone
i own a 01 bullit. i recently replaced a faulty iac valve. the car ran fine for a couple of weeks. now however it is idling at around 900rpms as opposed to 750 rpms like it normally would. i also replaced the tps disconnected the battery overnight to reset the computer checked for any vacumm leaks and cleaned the throttle body. it is still idling to high. any suggestions would be greatly apreciated. thanks guys

5.0 85 GT

what other mods do you have done tot he car? and what did you clean it with? and how is your MAF sensor?? you could also check the gasket on the IAC to make sure it is still good, if not you might have a slight vacuum leak??

cezr75

hey 5.0 gt
the car is stock. i also replaced the gasket when i installed the new iac and i cleaned the maf with the special cleaner they sell at the auto parts store.

TRUEBLUE3934

Did you ever figure out what was causing your idle troubles? I am having issues with my idle now. I just replaced the IAC to eliminate it from potential causes. I just had cams and long tubes installed and the tech doing my custom tune could not get the revs to stop hanging and also the car will sometimes choke off at idle. I am a little upset with how it runs right now. I did not have these issues until I took it in for the mods and tune. The cams are Hitech StageIIs and are not too radical. I don't think that is the root of my troubles here...

Any ideas???

Cam's 01 BULLITT

Wow I am having the same problem with my Bullitt and the only mods is a cold air intak and an X pipe. Mine sounds like a dang air horn and the ilde jumps around and the dies. Please let me know if you guys come up with something.
Thanks,
Cameron

mazdat

What brand iac are you guys using? I seen in the past that when an aftermarket part is used, you always going to have an issue sooner or later, go with a factory Motorcraft part, its more in price but its worth it

TRUEBLUE3934

I replaced my IAC with a Ford part and it didn't seem to help me, so I took my car to another local tuner who completely redid my tune. The high idle issue is gone and the car drives like it should with the exception of an occassional choke off in a drive-thru line. It simply doesn't catch the idle dropping too low every once in a while. I am content with it now since the additional performance from the cams and long tubes is significant.

bullitt4952

Im having the same issue. Replaced the IAC and idle control sensor. It worked fine for about a week, and now revs up to 2500 rpm. Really frustrated, and cant seem to find any answers. only mod ive put on was cold air intake. everything else is stock.

shaysinthegame

yeah what they said.. but it can be lots of things