engine fan only works with a/c on


Asked by Dec 03, 2014 at 09:59 AM about the 1997 Ford Thunderbird LX

Question type: Maintenance & Repair

unless i turn on a/c or defrosf engine fan won't come on. replaced coolant sensor, did not help

4 Answers

Tom Harmon

Is the engine overheating? The fan will only come on if the sensor detects a preset temp. Usually around 180 degrees .... and that's hot


yes with no fan 5=10 min.

Tom Harmon

I suspect the temp sensor and not the relay because you said the fan does come on with the AC Some temperature sensors are located near the elbow where the coolant goes into the engine


it overheats cause fan won't come on.i installrd new sensor. if i turn on defrost or a/c all is fine

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