Tuning Idle w/ AC On

[TAQuickness]

Here's the scenario:

Sitting at hot idle, car is running smooth. Turn the AC on, car falls on it's face (stops running). Turn the AC off, start the car, idles great. Turn the AC on, feather the TPS, car idles fine.

What needs to be adjusted to allow the PCM to compesate for the AC compressor kicking on?

[bink]

Here's the scenario:

Sitting at hot idle, car is running smooth. Turn the AC on, car falls on it's face (stops running). Turn the AC off, start the car, idles great. Turn the AC on, feather the TPS, car idles fine.

What needs to be adjusted to allow the PCM to compesate for the AC compressor kicking on?





{B4329} Idle Learn Drive A/C On Limit High (Grams/Second)

I scanned airflow (MAF), as I turned the AC off and on while it was running and bumped this offset table to provide the needed AC On airflow. Bump it to 3.00 and see how it does.



{B4328} Idle Learn Drive A/C On Limit Low - Changing this table didn't help me.

Hope this helps some.


Cheers,
joel

[TAQuickness]

Thanks Bink. It helped, but still dies when at full operating temp and the compressor cycles.

I'm gonna try a few more things and let y'all know what works - or doesn't