Mechanics

BLOWER FAN

2002 Mercury Mountaineer • AWD Automatic •

I have a 2002 Mercury Mountaineer. Blower fan turns off and on at any speed, for about 10 seconds each time (either a/c or heat). I replaced the blower motor resistor, but problem is still there. Could it be the blower motor?
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Brian374
June 13, 2011.



Possible next time it quits check for voltage at blower if present then motor

Docfixit
Jun 13, 2011.
When it quits, I still can hear the blower running. But no air flow coming from the vents, or at floor level. So I'm think it is still running somehow, but no air being forced out for those 10 seconds. Puzzles me.

Tiny
Brian374
Jun 13, 2011.
I would also verify the ground signal at the blower motor. That's the other half of the circuit.

Wrenchtech
Jun 13, 2011.