Heater/Ac controls
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Laughing Gas
Joined: Sep 2004
Posts: 1,169
Likes: 4
From: Whitby, Ontario, Canada
Heater/Ac controls
Does anyone know if I can get parts to service the heater/Ac control assembly for my '76? The vacuum switch/blend selector dropped a wheel and I'm afraid I threw it out before I realized what it was. I posted a want ad but it's getting cold and I need heat fast! 
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Laughing Gas
Joined: Sep 2004
Posts: 1,169
Likes: 4
From: Whitby, Ontario, Canada
Yes, the control levers and vacuum assemblies that open/close the vents to direct airflow. From memory,... I think the top one selects temp and opens the valve on the heater hose. The lower one selects off, vent, a/c, hi/lo, heat, defrost. Not sure about the actual order of the selections but it's the lower one that lost a piece and is now not directing vacuum anywhere.
Postmaster
Joined: Jul 2003
Posts: 2,544
Likes: 2
From: okc
man i have that same problem, only my relay freaked out too, it just buzzes when i turn on the blower, i had to unhook then switch assembly and the relay and put a jumper wire in the plug that goes to the OFF VENT etc. and a jump wire in the relay plug,, i know its a rigged up job but i have a defroster till i can locate the correct relay and switch assembly...
Thread Starter
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Laughing Gas
Joined: Sep 2004
Posts: 1,169
Likes: 4
From: Whitby, Ontario, Canada
Yup, I did my relay a couple of years ago, now the switch arcs and is ready for replacement too. The connector on the back of the motor speed switch is all distorted from overheating.
Thanks for the tip on NPD. I down loaded their catalog. They carry the temp. valve control and the switch but it wasn't clear from the catalog if they have the other control for airflow. I'll give them a call tomorrow.
Thanx
Thanks for the tip on NPD. I down loaded their catalog. They carry the temp. valve control and the switch but it wasn't clear from the catalog if they have the other control for airflow. I'll give them a call tomorrow.
Thanx
Posting Guru
Joined: Jun 1999
Posts: 1,172
Likes: 2
From: SW Missouri
controls from late 80s vans work. I think you have to change the switch itself, but the rest is the same. (but with cooler graphics) I think 86-92 F-series also will work.
full size cars 73-78 are the same too.
full size cars 73-78 are the same too.
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Senior User
Joined: Nov 2004
Posts: 133
Likes: 1
From: NE Oklahoma
ID like to add a question i have a 76 F250 and my heater and ac work and all, but i want my heater to work better, the blower blows and the heater heats, but neither to my likeing, i want more heat and more air moveing what do i need to do?
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