Heater Blower not working

410

Asked by american08 Jan 11, 2016 at 05:21 PM about the 1999 Ford F-250 Super Duty

Question type: Maintenance & Repair

The A/C,Heater blower in my 1999 F-250 Super Duty stopped working , I put in a new relay , and  changed all three control switches, ( fan, thermostate, and vent controls) . Double checked fuses, all good. Blower motor will work when we run a jumper wire from battery directly to Blower motor prongs.(To test)

8 Answers

410

Yes, The resistor on blower motor was the first item changed, coils looked rusty from moister. thought that was the problem, but still no blower, so we changed the control switches , but still nothing . Prior to trouble, Everything worked perfect , then blower motor would shut off after running a few minutes, then go on on its own while driving, then go off again. this went on for a couple weeks . Now I only feel heat coming thru vents, but no fan or blower.

41 people found this helpful.
130

did you find the issue I am having same one please let me know (2000 f250 though)

12 people found this helpful.
50

Need help my F350 is doing the same and can't figure out the problem

5 people found this helpful.
110

Same thing going on with mine. Blower motor works when directly powered to the battery. Replaced resistor. Still nothing. It worked intermittently, but now nothing.

11 people found this helpful.
50

Did anyone find out what the problem is on this I have the same problem going on in the truck I’m working on the only thing I can think of is the power control module behind the fuse panel but I’m not sure if the power goes through that before it hits the relay

5 people found this helpful.
10

The instrument panel was the issue with ours. Same problems as most would go on and off for a while but then died all together I guess are things are tied into the panel.

1 people found this helpful.
50

Fuse box. What u mean by instrument panel guru99

5 people found this helpful.

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