A/C heater fan stopped working

1996 FORD THUNDERBIRD
96,000 MILES • 1.6L • V6 • 2WD • AUTOMATIC
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TERI HANSON
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  • 2 POSTS
was running the A/C when there was a puff of smoke from the vents and fan quit working.
Feb 13, 2018 at 2:23 PM
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CARADIODOC
  • ✓ASE Certified Mechanic
  • 34,321 POSTS
  • ASE Certified Mechanic
There are two versions of control system. If you have the manual system, with no test results to analyze, the best suspect is the thermal fuse for the fan motor resistor burned open as a result of the fan motor having tight bearings. The clue is the fan will still run on the highest speed. If it does not, it is also possible, but much less common, for the motor to be shorted. That would cause a 30-amp inline fuse to blow. To find this, start by measuring the voltages on the two motor wires when the ignition switch is on.
Feb 13, 2018 at 5:25 PM
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