OK I don't know if I can do a continuity check on the wiring. If I'm looking at the correct sensor (on the thermostat neck, pointing up not the one toward the front of the car) it has a green and brown wire.
The back of the instrument panel has 3 wires running to the gauge. A positive, and two contacts numbered 4 & 5 on the harness disconnect. One wire is green/yellow one is brown (slightly larger gauge). I assume the brown is the ground, there is continuity between it & nuts behind the dash. However, the green/yel wire does not have continuity to the green wire on the CTS.
Looking in my chilton manual it appears that the green & brown wires from the sensor run to the computer, not the instrument panel.
When I plugged the sensor in after starting the car & having it run for a few minutes, the RPM changed so it makes me skeptical that the sensor or wiring is the problem.
Is there a way I can check the gauge itself? Or what should I do now?
Sunday, October 4th, 2009 AT 4:08 PM