Quote:
Originally Posted by CanyonRig
I was cruising down the CA-91 from Riverside to Orange in my 94 80 when the temp gauge needle went past the red zone, and remained pegged above the red zone. I exited the CA-91 as soon as possible and pulled over to safe spot and inspected. Everything seems to be intact, with no signs of leakage or smoke. The expansion tank was empty (as I filled it up 2600 miles ago from IL-CA XC trip), but the radiator was full. I was able to get home, refilled the expansion tank , and waited until the following morning to test run the engine from dead cold. The temp gauge needle is still pegged above the red zone, and when the ignition is off the needle points all the way down still.
Will this temp gauge mod fix the problem or do I need to get a new gauge assembly all together? Any other advice would be appreciated. Thanks...
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sorry for the delay, I have been out of town
It is possible that the mod could fix your gauge if for instance if one of the two components we replace with the mod has a broken lead, but it is more likely that you have a short to ground in the wire leading from the sensor to the gauge or a short in the sensor itself, I believe that wire is in the bundle that runs near the EGR pipe, that bundle often has issues due to excessive heat,
I would pull the cluster and check the resistance of the circuit to ground at the cluster plug, see the development thread (link in first post of this thread) for charts showing expected resistance vs temperature. you could also do the mod to the gauge while it is out.