1984 Heater Blower Switch
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1984 Heater Blower Switch
Hi, I have a 1984 Ford F150, 351 Windsor, dual gas tanks, and factory air conditioning I am having no end of trouble with the heater blower fan. Is it possible to rewire the blower motor to a simple off/on toggle type switch? I really need to get the defrosters to work.
Thank you,
Thank you,
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Joined: Nov 2007
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From: Denver Metro Area, CO
You could prolly do that using a 30A (or so) relay, you would have only ON or OFF.
What are the problems you've been having? What troubleshooting have you done and
what have you found?
It's fairly common for AC-equipped trucks to have problems with the temperature blend door
breaking off the hinge and the vacuum motor end up merely pushing a rod up and down
instead of swinging a door open & closed.
Or, some guys disconnect the vacuum reservoir(s) thinking they're making things "better"
and "cleaning up the engine compartment" by removing things *****-nilly without really
knowing what they're doing....
You don't see too much out here about the blower motor itself, though; whatchya got?
What are the problems you've been having? What troubleshooting have you done and
what have you found?
It's fairly common for AC-equipped trucks to have problems with the temperature blend door
breaking off the hinge and the vacuum motor end up merely pushing a rod up and down
instead of swinging a door open & closed.
Or, some guys disconnect the vacuum reservoir(s) thinking they're making things "better"
and "cleaning up the engine compartment" by removing things *****-nilly without really
knowing what they're doing....
You don't see too much out here about the blower motor itself, though; whatchya got?
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Cargo Master
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From: Arcadia, Fla
Here's some more info mostly about the blend doors and duct work problems.
https://www.ford-trucks.com/forums/1...cs-needed.html
I'll add to that link with he blower motor wireing diagrams...
https://www.ford-trucks.com/forums/1...cs-needed.html
I'll add to that link with he blower motor wireing diagrams...
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Joined: Jan 2001
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From: Virginia
You can't hardley read this diagram, but if you look close, you will see on high speed the blower gets power directly from the dash speed switch, and doesn't go through the resistor at all.
Moderator
Joined: Jan 2001
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From: Virginia
Do you have a picture hosting site you use? Put it on there and bring it in, I wouldn't mind having that drawing blown up.
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From: Wagener, SC
https://www.ford-trucks.com/forums/1...ml#post9764207
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