I had a mechanic quit after he removed the engine for my 2001 s4 and I was left to re install the motor. I have the motor Back installed with New turbos and clutch, ect, But I have one electrical plug Remaining. I do not no where it goes It comes out of the main wiring harness at the back of the motor between the firewall. It has a black three pin connector with only 2 wires going into the connector tan and tan w red stripe. the center of the plug is purple and has the three pin all in a row. The wire has some heat shielding on the wire so I assume it runs near the turbo or exhaust. It comes out of the main harness with the two wire speed sensor that goes to the transmission. does any one know what this connector goes to? I can post a picture if need.

George Murray

 

I'd post a pic. Unfortunately the S4 section here is kinda dead, post this up at Audizine.com along with the pic and I'm sure someone will know. The A4 guys here are great but you'd probably get better response on AZ for this one.

 

When we deep-sixed Emilgevor's afterrun coolant pump, IIRC there were two connectors right back there. One went to the pump and had an orange or pink insulator and the other had a purple one and plugged into something right at the back of and beneath the intake manifold. I don't know what it was, only that it was back there and slightly to the passenger side of center.

 

it is not the connector for the (speed sensor, O2 sensors, electric water pump, boost control, knock sensors, coolant level sensor,cam position sensor) they are all connected its the only one I don't know where it goes.

 

i found the plug 2nd connector on transmission either speed sensor or back up light switch.