Blower fan does not work
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Senior User
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From: Central Kansas
Blower fan does not work
The other day I was driving down the road with the fan on high and it all of a sudden stopped working. I have done some checking online. If it was the resistor the fan should work at some speeds and if it is the blower motor going out it should be making some kind of noise. My question is could the blower or resistor be bad or is there something else I need to check. This is on a 2005 F250 King Ranch. Thanks for the help.
Hotshot
Joined: Jan 2004
Posts: 19,768
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From: St Louis
Manual or automatic climate control?
Not necessarily. Sometimes they simply quit.
It's not the resistor (if a manual control).
Start by checking the 40A fuse F02 and the blower relay in the under-hood fusebox.
Do you have a multimeter and know how to use it?
if it is the blower motor going out it should be making some kind of noise.
My question is could the blower or resistor be bad ...
or is there something else I need to check
Do you have a multimeter and know how to use it?
Tuned
Joined: Apr 2001
Posts: 417
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In addition to the things projectSHO89 mentioned, with the truck running and the switches turned on, try hitting the outside of the casing with something (like your hand, you're not trying to break it) or slamming your door. If it starts then, the motor is going out and that shock breaks it loose enough to run until it seizes again. I've gone through 2 motors on my 02. Good thing they are easy to get to on these trucks.
As far as the relay goes, did they move the relays back off the fuse block in the 05s? My 02 has the mini relay on the fuse block for things like the fuel pump and the blower, etc. Those are not replaceable and I had to reroute a circuit to bypass those and put my own relay in place for both of those. I think you might be lucky and they did away with those little embedded relays after 03.
As far as the relay goes, did they move the relays back off the fuse block in the 05s? My 02 has the mini relay on the fuse block for things like the fuel pump and the blower, etc. Those are not replaceable and I had to reroute a circuit to bypass those and put my own relay in place for both of those. I think you might be lucky and they did away with those little embedded relays after 03.
Hotshot
Joined: Jan 2004
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From: St Louis
they did away with those little embedded relays after 03.
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Senior User
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From: Central Kansas
Sorry it has been awhile to get back. I have check the fuses and relay, and they look ok. So am I down to the blower motor and resistor as the possible problem? The truck is equipped with the auto climate control if that helps any.
Fleet Mechanic
Joined: Jan 2012
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From: Saskatchewan
Pop the hood and give the blower motor connector a wiggle. This happens to my excursion from time to time. Seems to be good for about 6 months after
New User
Joined: May 2020
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From: HillBilly Ozark mountains
The other day I was driving down the road with the fan on high and it all of a sudden stopped working. I have done some checking online. If it was the resistor the fan should work at some speeds and if it is the blower motor going out it should be making some kind of noise. My question is could the blower or resistor be bad or is there something else I need to check. This is on a 2005 F250 King Ranch. Thanks for the help.
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