erratic idle on start-up, '99 3.4
crazy Jim
09-24-2012, 11:02 PM
Starts rough but clears up after about a minute, I'm assuming the IAC is sticking. Whats the proper procedure for dis-connecting and removing then cleaning and re-installing? thanks
GTP Dad
09-25-2012, 05:21 PM
Turn car off and unplug the IAC from the car. Remove and spray with carb cleaner to remove gunk. Reinstall in reverse order. Do not move the pintle while it is out or you will have issues. Plug back in and start car. Should clear up the issue.
Tech II
09-26-2012, 10:26 AM
Could also be a vac leak.......coolant leak into cylinders(misfires until coolant is eliminated).....fuel problem.....etc.
xeroinfinity
09-28-2012, 04:52 PM
Not to trump GTP Dad, but here is a lil more detail procedure on the IAC Jim.
Idle Air Control(IAC) Testing Replacing (http://www.automotiveforums.com/vbulletin/showthread.php?t=663849)
Idle Air Control(IAC) Testing Replacing (http://www.automotiveforums.com/vbulletin/showthread.php?t=663849)
GTP Dad
09-29-2012, 09:21 AM
Well played xeroinfinity!
Automotive Network, Inc., Copyright ©2026
