There's two coolant temperature sensors, one for the gauge and one for the Engine Computer. Did you replace the sensor with one or two wires?
The gauge uses the single-wire sensor. There must not be any teflon tape on the threads to seal it against leaks because that will insulate the ground circuit. To bypass the sensor, unplug the wire and ground it to the engine. With the ignition switch turned on, the gauge should read full hot. If it doesn't, there's a break in the wire or a problem on the instrument cluster.
Tuesday, September 27th, 2011 AT 12:36 AM