Where does this female clip go to? This picture is hard to see from my cellphone but it looks to be a 3 prong inside and has the clip like an injector clip. It is attached to the harness that goes to the CAS and to the plug wires. It could pretty much reach anywhere on back or front of car on drivers side. It is not the throttle body harness or the map sensor.

 

Bump.

 

it could go to EGR valve solenoid (under the intake manifold), speed solenoid (top rear of the tranny), the fuel regulator solenoid (passenger side of the intake manifold) try does or just keep looking around.

 

why is it off again?...that sort of harness doesn't detach itself...

 

looks like the mpd sensor, but you said it isn't....

 

does your speedo work?? If not it could be the speed sensor plug?