Looking at an '11 3500 with Ally and has P0711 and P0712. Temp will go from insisting it's overheating to normal temps, might jump around a lot....109, 140, 183, 135 then just go to dashes (--) ie no reading at all.
I was able to wiggle the obviously leaking connector at rear of trans and force the temp from 109 (probably accurate at the time) to 316 or 320 and then reverse direction and back to 109.
Thus I'm gonna say flakey connection/ATF contamination at plug.
So the question is do I just replace the seal/washer at connector (I think MA sells just the seal), or the entire internal harness? While the pan is down do I also replace the manifold to get a new sensor and head off future problems?
273k mi on vehicle. Hoping @clinebarger has advice
I was able to wiggle the obviously leaking connector at rear of trans and force the temp from 109 (probably accurate at the time) to 316 or 320 and then reverse direction and back to 109.
Thus I'm gonna say flakey connection/ATF contamination at plug.
So the question is do I just replace the seal/washer at connector (I think MA sells just the seal), or the entire internal harness? While the pan is down do I also replace the manifold to get a new sensor and head off future problems?
273k mi on vehicle. Hoping @clinebarger has advice
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