idle problems..need help

xXxGTxXx · 07-04-2009

Well i thought i had this problem fixed when i found a vaccum leak and fixed it. My car idled like it was supposed to for a day or two and now one of these three things happen when i drive it.

1. when i push the clutch in it will stick at 2000 to 3000

2. It will slowly come back down...stop at 2000...then drop to 1500 then drop to normal idle.

3. Will bounce inbetween 1000 to 2000

i don't think its a vaccum leak....could this be my iac going bad? thanks the help in advance

joker1999 · 07-04-2009

Mine does it sometimes when i turn on the a/c it fixes it some how it idles it up and seems normal, check the air filter make sure its clean, un plug the iac and spray with w-d 40. hope this works!

NJ98GT · 07-04-2009

This could be caused by many things. Check this link out.

Ford Mustang IAC IAB - Solving your idle problems

xXxGTxXx · 07-05-2009

update.

took the iac valve off this morning and cleaned it. it was extremely dirty....looked like i was cleaning grease out of it is how bad it looked. put it back on and cranked the car up...got it out to temperature and took it out on the interstate with no problems.

yay....saved 100 bucks. hope it stays that way. thanks for the posts

crzyhorse11 · 07-06-2009

chances are that if you cleaned your IAC and it fixed you will soon need to replace it... another one of the wonderful emissions crap