speeddemon457

Hello I have a 90 1.6L with MS1 v2.2 installed. I think it's a Brain built unit (bought used). Question is when I have the idle control is closed loop mode, it looks for a tps signal to inactivate the IAC (I think). Since my car doesn't have a TPS the IAC will always be active right? Does this adversely affect anything as far as wearing out the unit prematurely since it will always be active? I realize it will go to minimum at speed but just wasn't sure if there is a better way to do this?

Seems like you could program it to deactivate above specified RPM.

Thanks!
Ron

Greg G

The TPS has nothing to do with closed loop idle control. It does help tremendously with idle droop though.