4-Wire IAC
Posted: Sat Mar 01, 2025 9:39 pm
I have a UAEFI on a Jeep 4.0 liter-based '95 Grand Cherokee (ZJ), but with a high compression 4.6 stroker swap. I got the ignition control working. My next step is to take control of the IAC. It is a 4-wire unit with 1A - 1B, 2A - 2B hardware. I have looked at similar examples, but Tuner Studio greys out any options for the wiring configuration. Another Jeep 4.0 retrofit (scfrontier) used pins A1, A2, A5, and A6 to control the IAC. I tried to replicate his settings in TS, but -- again -- what he chose is greyed out in my version.
I was advised to look at GM examples, but again, what was selected in these uploaded tunes is greyed out in mine. Here is my tune:
https://rusefi.com/online/view.php?msq=1731
Can anybody point me in the right direction??
I was advised to look at GM examples, but again, what was selected in these uploaded tunes is greyed out in mine. Here is my tune:
https://rusefi.com/online/view.php?msq=1731
Can anybody point me in the right direction??