Blower Motor gone Haywire?
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Freshman User
Joined: May 2009
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From: North Carolina
Blower Motor gone Haywire?
Anything electrical is not my forte, just to get that out of the way. To make a long story short, I bought a 77 F100 a few weeks ago (I'm still trying to post pictures and can't figure that out as well) and the fella told me the radio did'nt work....no problem, everything else worked fine. I figured I would start with a fuse.....simple enough. The fuse tested fine on a meter and I stuck it back in. Go to get some gas last night and turned on the heater and the fan would'nt work. The two are unrelated via the fuse are'nt they? Was this just coincidental? Am I going to have to remove the instrument bezel and radio to check and see if I'm "hot" to the switch, or will the A/C-Heater controls slide out and leave the radio alone?
Cargo Master
Joined: Apr 2009
Posts: 3,038
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From: South west Idaho
On 77 I don't know on a 79 , yes . If it has the factory air with the big box in the engine compartment, you better hope it's not the blower motor.
if it is , you may not want to be called "Luckyjoe"
if it is , you may not want to be called "Luckyjoe"
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Freshman User
Joined: May 2009
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From: North Carolina
That's the way my "luck" usually runs. Try to fix one thing and two go bad. Thanks for the relay info, that will be helpful. I've got a 79 Ford Light Truck shop manual, so I should be able to get a pretty good idea where to look. Thanks again!
Hotshot
Joined: Apr 2009
Posts: 14,333
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From: Stanley, VA
They are different. On non-AC the blower motor sticks through the firewall. On AC equipped trucks the blower motor is burried inside the evaporator housing.
Here is an illustration from the Ford parts catalog of the AC evaporator housing.
Click on the .pdf link to view.
Here is an illustration from the Ford parts catalog of the AC evaporator housing.
Click on the .pdf link to view.
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Freshman User
Joined: May 2009
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From: North Carolina
Can you say RELAY!!!!!!!!!!! In the wiring diagram (Haynes manual), it had nothing referring to a relay. Thank Mike!!!!!!!!
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Cargo Master
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From: Lexington. Mi.
Hi mikeo0o0o0 I have a 77 that is in need of a blower motor relay, who ever jacked up the wiring b4 i got'er took out the relay and bared a few wires from the relay plug and taped them together anyways do u know where i could find a new relay?
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
You should still be able to get the relay at any GOOD auto parts store, either that or look for an auto a/c parts supplier.
Plus, if you can't locate one, Flex-a-lite makes a universal a/c fan relay that you could probably make work.
Plus, if you can't locate one, Flex-a-lite makes a universal a/c fan relay that you could probably make work.
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