I need to know where the tach signal comes into and leaves the ECU. Does
anyone have an idea which wires they are on that plug?
My tach keeps cutting off and on in the instrument panel, and everything
checks out up there. Has happened ever since the ECU was removed and
installed this past summer.

Thanks

 

If you have a Turbo, the speed sensor is one of the sensors on the
flywheel reading the starter teeth and then sending the information to
the ECU. Your problem might be down there. Not sure of the pin
Connection to the ECU.

Try asking the type 44 people at:

http://forums.audiworld.com/v8/

Tony
'91 100q 5spd

imquattro wrote:
> I need to know where the tach signal comes into and leaves the ECU. Does
> anyone have an idea which wires they are on that plug?
> My tach keeps cutting off and on in the instrument panel, and everything
> checks out up there. Has happened ever since the ECU was removed and
> installed this past summer.
>
> Thanks
>
>