Troubleshooting the temperature gauge

69signetv8 said

Add-on
Also, to ensure it's "not" a power issue, confirm first by doing a voltage reading or use a probe light at the sender units wire. If there's a reading or the light comes on you know your wiring run is fine. No sence in ripping the cluster out if it's the sender or open circuit at the balkhead.

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Okay, so the sender is the ground correct?

I should be able to take an Ohm reading @ the sender & depending on the coolant temperature I sould show some continuity.

I can then test the wiring back to the firewall.

If that checks out, I then remove the cluster & check for voltage on the hot side of the gauge & continuity to ground on the cold side.

If all that checks out, then the gauge is bad. :sad1:

In a worst case scenerio, how do I go about replacing a bad temp guage?