Heat Temp Light flashing after Expansion Tank Replacement
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Had a Crack in the expansion tank with a BAD leak all of a sudden. Heat light never came on. Probably due to quick notice of leak. Replaced the Expansion Tank, Refilled with Proper Fluid, now the Red Lamp Light for Heat on Dash is Flashing, and Beeping. Do we need to reset sensor? Or is Sensor bad now? Never had this problem before.
Make certain cooling system is completely bled out. Usually requires an airlift (vacuum system) to purge completely Also ECT Temp Sensor are a common failure.
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