Hey Everyone,

My in-dash temperature gauge does not seem to be working correctly. I bought a (actually another) SWB TD42 the other day and while driving home on the highway the coolant temp sat in the middle of the temp gauge as expected, then ran very hot when driving at slower speeds closer to home (not happy - expecting it's done a head or head gasket). Problem is... now it will barely move past the L mark even when left idling for 30mins. I replaced both the temperature sensor and the temperature sender on the thermostat housing with no luck. I followed the service manuals instructions to check that the gauge was getting power when in the 'ON' position which it was, and connecting the respective contact on the dash to an earth sent the gauge past the H line almost instantly. I know these gauges aren't accurate and I will get an aftermarket one later... but I still want all of the gauges in the dash to at least work.

What else should I be checking for?

Cheers,