HELP, having idling issues....

LS2 KLR

Member
Apr 16, 2003
452
0
17
Houston, TX
My car is idling unusally high like 1500-2500rpms. When I start it it idles perfectly but after warming up it climes up and stays. I had a nitrous backfire a while back and installed a Bullit intake. I honestly can't remember if it did this before or not.

I replaced my mass air sensor, IAC, and sprayed plenty of carb cleaner all over looking for a vacuum leak with no success. My idler screw has also been backed out all the way. What else can I do to fix this? Its getting more annoying by the day!