CHEAPEST & EASIEST A.C. MOD !!!!
Posting Guru
Joined: Jul 2006
Posts: 1,346
Likes: 0
From: Visalia CA
SHEESH ITS 100 TODAY, YOU ARE HOGGING ALL THE JET STREAM UP THERE....LOW PRESSURE PLEASE COME VISIT US!!!!!!!!!!!!!!!!!!!!!!!!
Senior User
Joined: Jun 2007
Posts: 123
Likes: 0
"For anyone who may not know which heater hose to install it in, it is the one that carries hot water into the heater core, it will be the one coming from the engine and going toward the firewall, not the one which connects to the water pump."
Ok, a well respected mechanic told me that it doesn't make any difference which hose you place the valve in. Is he wrong? I picked the hose on top and it worked well till I opened it to get a little heat one day. Figured it leaked because it was PVC and didn't like the heat. Have replaced it with a Brass valve and noticed the end goes directly to the top of the water pump. Do I need to change this hose and put the valve in the other one? Too much time on my hands right now, keep finding things I need to do.
Rod
Ok, a well respected mechanic told me that it doesn't make any difference which hose you place the valve in. Is he wrong? I picked the hose on top and it worked well till I opened it to get a little heat one day. Figured it leaked because it was PVC and didn't like the heat. Have replaced it with a Brass valve and noticed the end goes directly to the top of the water pump. Do I need to change this hose and put the valve in the other one? Too much time on my hands right now, keep finding things I need to do.
Rod
Senior User
Joined: Jun 2006
Posts: 222
Likes: 0
From: Lubbock, TX
Here is the post from last year. There are some pics of the install starting about #9.
https://www.ford-trucks.com/forums/5...ditioning.html
https://www.ford-trucks.com/forums/5...ditioning.html
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
"For anyone who may not know which heater hose to install it in, it is the one that carries hot water into the heater core, it will be the one coming from the engine and going toward the firewall, not the one which connects to the water pump."
Ok, a well respected mechanic told me that it doesn't make any difference which hose you place the valve in. Is he wrong? I picked the hose on top and it worked well till I opened it to get a little heat one day. Figured it leaked because it was PVC and didn't like the heat. Have replaced it with a Brass valve and noticed the end goes directly to the top of the water pump. Do I need to change this hose and put the valve in the other one? Too much time on my hands right now, keep finding things I need to do.
Rod
Ok, a well respected mechanic told me that it doesn't make any difference which hose you place the valve in. Is he wrong? I picked the hose on top and it worked well till I opened it to get a little heat one day. Figured it leaked because it was PVC and didn't like the heat. Have replaced it with a Brass valve and noticed the end goes directly to the top of the water pump. Do I need to change this hose and put the valve in the other one? Too much time on my hands right now, keep finding things I need to do.
Rod
Have a nice Beer!!!
Joined: Nov 2006
Posts: 5,024
Likes: 1
From: WA Resident
Yup, on the west side. Right down the road from Dan.
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Lead Driver
Joined: Mar 2004
Posts: 5,372
Likes: 108
From: Northern Indiana
Does this mod make it so the interior controls for the coldness are not adjustable? The one mod on here said you lose the ability to change the temp it is cold all the time you just have to turn down the fan.
Junior User
Joined: Jul 2007
Posts: 95
Likes: 0
Hi all,
it sounds like a good mod. I'm a class A driver and we have the same "T" valve shut off. in the rig it doesn't make any difference for the A/c.
but when it turns cold out you better turn the "T" the other way. LOL
anyway, if someone does this mod, post some pics.
John M T
it sounds like a good mod. I'm a class A driver and we have the same "T" valve shut off. in the rig it doesn't make any difference for the A/c.
but when it turns cold out you better turn the "T" the other way. LOL
anyway, if someone does this mod, post some pics.
John M T
Senior User
Joined: Jun 2006
Posts: 222
Likes: 0
From: Lubbock, TX
Here they are again.
https://www.ford-trucks.com/forums/5...ml#post3836729
Here is the picture of the valve installed on the truck...remember, makes no difference how you hook it up (vacuum valve facing either way, it will work).
And here is the vacuum t-valve installed behind the glove box. The red vacuum line will give hot water shut-off at ALL settings to the left on the controlled (VENT, AC, or MAX AC):
https://www.ford-trucks.com/forums/5...ml#post3836729
Here is the picture of the valve installed on the truck...remember, makes no difference how you hook it up (vacuum valve facing either way, it will work).
And here is the vacuum t-valve installed behind the glove box. The red vacuum line will give hot water shut-off at ALL settings to the left on the controlled (VENT, AC, or MAX AC):
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
The problem I am having is all the valves I have seen so far are only rated for 180*. In my hardware ordering book, there are many different valves. but none over 180*. Even the CPVC valves don't go over 180*.
Has anyone else run into this?
Has anyone else run into this?
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Part number: 431 819 809A, Heater Valve. Retail cost about $25.00.
I have two installed on my truck, one on the feed side and the other on the return side. Both controlled with a single vacuum solinoid that is controlled with a switch that I installed on the dash.