when do stit's take over coming to a stop?
04-05-2006, 04:15 AM
#2
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These are all stock settings:
I believe it occurs when the TPS is <= 0%, RPM <= 1200, ECT > 80* C, Engine speed is in error by more than 60 RPM for more than 1.3 seconds.
I believe it occurs when the TPS is <= 0%, RPM <= 1200, ECT > 80* C, Engine speed is in error by more than 60 RPM for more than 1.3 seconds.
04-05-2006, 07:56 PM
#4
The IAC starts working at 0% throttle position. Doesn't matter if you are rolling at 50 mph. Think about it, if not, the car would die once you let off the gas (unless you have a really big hole in the butterfly or you have the screw turned in and the throttle is cracked open at 0%).
04-05-2006, 08:27 PM
#5
Mine doesn't seem to be working that way. It'll let the rpms drop below idle when i'm still rolling and the iac doesn't even react. I don't see how the iac can be adjusting to get back to idle rpm while the throttle cracker is messing with the airflow values.
04-05-2006, 08:36 PM
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Originally Posted by 98Z28CobraKiller
The IAC starts working at 0% throttle position. Doesn't matter if you are rolling at 50 mph. Think about it, if not, the car would die once you let off the gas (unless you have a really big hole in the butterfly or you have the screw turned in and the throttle is cracked open at 0%).
P-Mack - I had a very similar problem. I had to adjust the follower decay rate to make a nice gentle transistion back to idle. If your car is rolling at 10 mph, the cracker may still have an effect on the IAC. Stock settings on the cracker are to deactivate around 1 or 2 mph. I believe both cracker and follower must be deactive or fully decayed before the PCM will transition back to an idle state.
