The thing is still high idling with the A/C on. It idles at 1,000 with the A/C on, turn it off and it goes to the programmed 700. I set the A/C adder to 0 rpm. Nothing in TunerPro, Tunercat, or WinBin seems to make any difference. Guess it is time to break out the Hex math and look up those addresses in more detail. On another note with the transmission in gear the engine is idling 700 rpm, when I shift to park/neutral it jumps to around 1,400, then levels off at 1,000. I know the P/N switch is OK because it does not do this with the stock .BIN. The only thing I changed in regard to idle speed in the .BIN was the coolant temp vs. speed table. I have the minimum idle set at 550 in Drive or about 700 in Neutral with the IAC closed and disconnected.

 

If the ECM thinks the transmission is in park/neutral there isn't a true idle control. Only the upper limit. Try it with the park/neut line open. As long as it doesn't stall as it's dropped into gear you may be happier with it.

Not sure about the A/C issue. Something doesn't sound right. Added RPM for A/C on is at $5DA, and is in RPM/12.5 units.

RBob.