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

Hello,
I'm trying to replace a VW Golf Mono Jetronic ECU by a MSII.
The sensors / injectors / ignition seem to be OK for being controlled by the MSII, except the IAC motor.
I understand there are two options MSII available for IAC, the PWM and IAC stepper motors.
So here is my problem:
The Bosch motor has two wires, where polarity has to be reversed to change direction.
Has anyone ever done an adaptation for such a Bosch 2 wire IAC ?
If possible I want to keep the motor as it also includes the idle position switch.

thanks in advance

C.

No help for you about your IAC motor, but you could consider running one of these:

http://www.megamanual.com/v22manual/auxaireg.gif

http://www.megamanual.com/v22manual/mwire.htm#idle

Seeing you have a VW, and the finding a VW in the yard with one of these is easy(the VW ones look a little different but work the same). Just a thought in case you can't get your IAC figured out.

thanks for your help. I will see if this could work.
at a first sight I'd say it will be difficult to use one of those as I need the motor to move the throttle. My injector is sitting upstreams the throttle which would be fully closed if I'd remove the IAC motor.
Adding an adjustable bolt, instead of the IAC motor; just to keep throttle a little open, could work to set the minimum.

I also In parallel will look for another throttle body which is similar to the Bosch Monojetronic, i.e. featuring IAT, injector,TPS, fuel pressure regulator, IAC and idle switch. (38mm)
If somebody has a suggestion, would be great.

C.