Quote:
Originally Posted by bmeyer29
Update:
Since my last post the erratic nature of my water temp came back. Someone suggested it could be caused by a short in the wires, and noticed there was teflon tape around the threads of the water sensor. It needs a ground through the block, so we took the teflon tape off, cleaned the sensor up and screwed it back in the block. We burped it again and started driving. Still erratic for a few minutes, and then the gauge or the sensor gave up and dropped to zero (well, really 60C). This is an Autometer Cobra style electric model. We will reorder a gauge and sensor and restart the whole process. I'll keep you posted.
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Have you changed your radiator cap? I know it sounds a bit too simple but I had the same problems you are experiencing and went through a lot of hoops trying to fix it including new temp sender unit and new thermostat, draining and refilling systems, etc., with no real improvemnets until I decided to try a new radiator cap(even though the old one seemed/looked OK). I put on a new 16lb. cap and
It instantly cured all the symtems and the preciously erratic readings were rock solid again as before the whole event started.
It's a cheap thing to try and it may be the answer to all your ills with the system. The cure for mine after the new cap was instant and dramatic! Runs a rock steady 180 now in all conditions as it always had before.
Don