Thread: loping cold start
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09-12-2011 11:17 AM #1
loping cold start
I have a 1993 Chevy S10 with a 4.3 TBI injection. About a month ago it started loping during cold start for the first few seconds. It had a code for the IAC and the Knock sensor so I replaced them but nothing changed. I replaced cap, rotor and wires and it made it much better (for a few day) Checked codes again and I still have one for the IAC. All the wiring looks good and all my reference voltages to the sensors are correct. This morning I had to rev the engine for about 2 minutes before it would idle smoothly and it was about 70 degrees outside. Anybody have the problem before?
".......So sanded it all down and resprayed. ......" Been there. done that on a couple of paint jobs over the years. Usually took me a couple of days to get over being mad before I started...
Stude M5 build