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Coolant System Diagnosis 140-160 1972

So now for an update. I ignored the wishes of the Missus and put house repair on hold to look through my parts. I found another voltage stabilizer and two water temperature sensors (one coming out of my spare engine) With them and the original parts in the car and the spare dashboard cluster I found earlier. I swapped out the temperature sensor, put both found ones in boiling water and the temperature gauge did not move. I swapped out the voltage stabilizers and with the original one the fuel gauge went to full and slowly went to empty (the tank is full). With the other 2 Voltage stabilizers, the fuel gauge worked perfectly but the temp gauge didn't move. I tried every combo of sensors and voltage stabilizers and no response from the temp gauge. I then did the same process with the other dashboard gauge cluster and had the same results. I also tested the resistance of the other 2 temp sensors and the multimeter measured around 27 on both (as opposed to the 5.1-6 on the original one). I also looked at fuses and they seem o.k, but I'm not sure which fuse I'm supposed to be looking at.

This all leaves me at a dead end. Either both the temperature gauges are bad, the wire is bad or I didn't look at the correct fuse (or at it). Any help?






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