Hi guys I recently have been chasing down my hard cold start problems with my z28. So I removed the iac and wiped it down a well as the throttle body and cleaned the maf. Anyway when I was setting the idle to 450 to set the iac, the ses light comes on with a code 22(tps voltage low) iv never gotten this code before so I don't know what could have caused it. I followed the instructions to a t. I guess I'm gonna go get a good standard tps and replace it.the car also idles very high and runs extremely rough on cold starts. Any help is good help.

 

You need to adjust the tps once you have set minimum air.
There was is a procedure written up on how set minimum air and the tps after