Engine Performance problem
2007 Chevy Colorado 4 cyl Two Wheel Drive Automatic 81000 miles
I am having an issue with my idle dropping down to 500 and almost dying when I am slowing a stop. The idle is fine once I come to a complete stop. It only happens when I am slowing to a stop. I have replaced to air filter and that didn't help.
You may have a bad IAC ( idle air control) but try cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.