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ls1 h/c/ex 6 speed. 2002 vette. I have been fighting this for about a year now. If I start the car cold and let it warm up it will run fine until I shut it off and start it up 10 minutes later it hunts for idle and stalls on occasion. If all is good and you turn on the a/c it will hunt and stall unless you let it sit and idle it will find itself and then be ok for the drive cycle.
I am posting my tune but I would like to know what parameters to log if needed. Thanks.
Take a look at this how to I made a few years ago. https://forum.hptuners.com/showthrea...Table-Tweaking
Also, datalog with the at least following PIDs:
AC Pressure (Volts)
STIT
Spark
Idle AC Airflow
Turn car on with AC off. When it is warm, start datalogging. Let it idle with AC off for ~30 seconds. Then turn on AC. Hopefully it does not stall but let it stabilize idle and then let it idle for 30 seconds.
Upload that datalog and I can give more hel
I attached a log. of course it didn't act too bad but later in the log when I rev it up a bit when it comes back to idle it does dip... Thank you for the help.
here is a log where it almost stalled pulling in to my driveway. (at the very end)
bump