There always used to be two coolant temperature sensors, one with two wires for the Engine Computer, and another with just one wire for the dash gauge. By 2003, most models had just the two-wire sensor, then the Engine Computer sent the data to the most complicated computer on the vehicle, which is the instrument cluster.
Be aware other engine sizes may still use two coolant sensors, and Ford has started calling one of them the "cylinder head temperature sensor".
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Monday, July 5th, 2021 AT 11:45 AM
(Merged)