Contour Enthusiasts Group Archives Forums Modifications Duratec Maintenance Replaced IAC valve, fine for 2 wks, bad again!?!?

Hi all, I did some searching at older posts and limited my cars overrevving between shifts, throttle hanging problem to the IAC valve. I replaced it and it shifted great for two weeks, revs dropped it was beautiful now 2 weeks later its doing the same crap, I love this car but this is a serious annoyance, it takes all of the fun out of driving it.

When I pull out of gear into neutral the car revs to like 4 thousand and hangs there. I get real wierd looks at stoplights!! Any suggestions I am at a loss and it is getting pretty frustrating. I am going to try to get the warranty replacement but i feel like the same thing is going to happen. Is it not the IAC valva at all? I dont want to cut holes and install plugs in my car, I just want it to be stock.

THANK YOU ALL in advance for the help!

That might not be the IAC that could be a stuck TB plate. Take off the intake(with the car off) and open the throttle via the lever and see if there is a load of crap stuck to it.

I know someone who once had so much crap on their TB the throttle wouldn't open all the way(chevy Tahoe <---haha).

Also I'm not even sure if the IAC could allow enough air into the motor for it to climb to 4000 RPM...Think about it. The TB is what somewhere between 50-60MM The IAC hole is maybe 15mm. The volume size is a huge freakin difference.

Thank you very much for the reply I will do that this saturday. Thanks! Hpoefully it will work

How about also trying the Throttle Hang fix?
http://www.contour.org/FAQ/FAQ.php?s=probs&displayid=3