MSefi.com read only forum (Jan.15,2018)

MS-II V3.0 I have a problem with the IAC. It seems to stop responding to commands before the car is fully warmed up, leaving the idle too high. According to the MegaManual (http://www.megamanual.com/ms2/IAC.htm), there is a possible fix involving jumpering two resistors labeled 1R0. I can't seem to find these at all, maybe they're from the 2.2 board?

The MegaManual says "This is very likely to be the problem for those who see the proper step commands given in software but inconsistent response from the motor, such as requiring a restart to lower the hot rpm after a cold start." This exactly describes my problem, but I can't figure out what to jumper. Anyone with a V3.0 have any luck figuring out how to do this mod?

What version of the firmware do you have?

Older versions of the firmware have a bug that will produce the exact same problem that you describe.

Thanks for the advice, I think I finally figured it out. I had a bad IAC, I replaced it and everything seems good now.