Engine does not want to run. IAC reading 140. Need help!

Welcome!

By registering with us, you'll be able to discuss, share and private message with other members of our community.

SignUp Now!

HouTX87

Active Member
Joined
Nov 21, 2011
Messages
837
So I made a few chip adjustments to turn off wot tracking in my TT 6.1 chip and now the car does not want to run. It will barely run and idles very low and IAC is showing 140, everything else on the scanmaster looks normal. I adjusted parameters 1 and 2 from 108 to 99 because I'm not sure that my wideband is working properly. So after making the adjustment it won't start, I unplug the orange ecm wire to reset the chip, still wont start. After enough cranking it will barely run, then die. Pulled the IAC out and unplugged it, definitely looks like it's maxed out.

Did my IAC just quit on me? Weird coincidence? It's a cheap one from autozone I put in last year in a hurry.
 
Yeah I didn't put my foot down very far when it was acting up because I wasn't sure if the problem was in the tune. I picked up a new IAC valve and that fixed it. I know the one in there was a cheapy from autozone but it's strange it happened when I was adjusting the chip.
 
Back
Top