Cold A/C mod using Excursion heater valve question...
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Elder User
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Cold A/C mod using Excursion heater valve question...
So I have the vacuum line ready to hook up to my YG-366 Excursion heater valve. My question is which of the two heater hoses coming out of the firewall from the heater core do I splice this valve into? I tried to figure this out by looking through threads related to this topic and didn't see any info on it.
Does anyone know which side it went on in the Excursion with no rear heater control?
Thanks,
Drake
Does anyone know which side it went on in the Excursion with no rear heater control?
Thanks,
Drake
More Turbo
Joined: Nov 2012
Posts: 727
Likes: 1
From: Chariton, IA
So I have the vacuum line ready to hook up to my YG-366 Excursion heater valve. My question is which of the two heater hoses coming out of the firewall from the heater core do I splice this valve into? I tried to figure this out by looking through threads related to this topic and didn't see any info on it.
Thanks,
Drake
Thanks,
Drake
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Elder User
Joined: Feb 2010
Posts: 721
Likes: 1
Do you mean it flows from the water pump to the heater core or the other way around?
More Turbo
Joined: Nov 2012
Posts: 727
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From: Chariton, IA
I believe it flows from the pump to the heater core, But I'm not 100% sure. Like David said, which ever one you do will stop the flow.
One way to check is get truck to operating temp, then feel the hoses and see which is warmer.
One way to check is get truck to operating temp, then feel the hoses and see which is warmer.
More Turbo
Joined: Nov 2012
Posts: 727
Likes: 1
From: Chariton, IA
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It's a Van Gogh
Joined: Feb 2010
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From: Elk Grove, CA
Remind me which one works in the Max setting only? That's the one I used. One of the best mods, great bang for the buck.
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More Turbo
Joined: Nov 2012
Posts: 727
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From: Chariton, IA
That's correct. I think I'm gonna hook in where the valve is that closes the door on the max setting. Right under the pass side dash.
Cargo Master
Joined: Mar 2008
Posts: 2,975
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From: Archdale,N.C.
I kept it simple,I went to a plumbing supply house and bought a brass gate valve and put it inline going to the heater core. Valve closed=no hot water to heater core(Summer)..Valve open=hot water to heater core(Winter)..
9 ECHO 1
Joined: Aug 2009
Posts: 12,467
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From: Missouri
I will be doing this (and a video) soon.
We have a similar device installed on the ambulances at work. Two brass valves from the hardware store installed under the rig. I didnt know about it until one day when it was 90* out and the air would only blow heat. The mechanic showed me and it was like he was the AC king!
We have a similar device installed on the ambulances at work. Two brass valves from the hardware store installed under the rig. I didnt know about it until one day when it was 90* out and the air would only blow heat. The mechanic showed me and it was like he was the AC king!
Lead Driver
Joined: Sep 2005
Posts: 9,399
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From: Norco,CA
Yes but dose it also close the flow when the outside air only is on. I think you have to plug into the red one for that. Please let me know, I've had this valve for years now and have yet to install it. I'm thinking Robin said to install in the red line if you want all of them to be cool. I'd like to run the out side air in the cab if it was cool.
Chet
Chet
More Turbo
Joined: Nov 2012
Posts: 727
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From: Chariton, IA
Yes but dose it also close the flow when the outside air only is on. I think you have to plug into the red one for that. Please let me know, I've had this valve for years now and have yet to install it. I'm thinking Robin said to install in the red line if you want all of them to be cool. I'd like to run the out side air in the cab if it was cool.
Chet
Chet