All of a sudden I can't get my blower to work at any speed, any temp, or any position. I replaced the blow motor resistor, but still nothing! I changed the fuse, and all hoses from heater core are hot as well. What could the problem be now? Is it the motor itself or maybe just the switch?
Heater Blower on 1992 Ford F-150
by shane6263 in Olathe, KS on January 21, 2011
1 answer 2 comments
ANSWER by DaveJM on January 21, 2011
Could be the blower itself, but pull apart that plug to the resistor again and have a close look. Any damage or burn marks on the terminals or connector? Often times the connector is damaged.
COMMENT by shane6263 on January 23, 2011
I rechecked the wires to the resistor and motor, they seem to be fine. Today I changed out the blower switch as well and still nothing. Also, I tried a trick soomeone suggested... running a direct wire from the battery to the motor. But still nothing!!! It's got to be the motor right?
COMMENT by DaveJM on January 23, 2011
Yes; or a ground. Because even if you provide direct power, if there is no ground...you have no motor function.
Heater Blower runs only at low unpluged the blower ran direct off battery and it ran on full speed
The other day I started the truck and as it started the heater kicked on for just a second and then stopped. Heat still comes out very...very lightly, enough to keep the truck worm once it gets hot...
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