Quick AC Question
Lead Driver
Joined: Jun 2004
Posts: 6,343
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From: Amarillo, TEXAS!
My truck is pre-valve. I've been toying around with the idea of adding the stock type valve and controlling it with a pneumatic toggle switch in the vacuum line. There are times it's so humid that I want to recirculate air, but don't necessarily want to freeze myself out.
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FTE-Spread The Knowledge
Joined: Feb 2008
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Yeah, we didn’t have the valve from factory, and we put a vacuum valve in. We took it out today, and put the manual valve in. Put the vacuum line back on the stud, had forgot about that. We tested the old valve and it was weak, letting fluid past it when closed. The new manual valve stopped it all. 18 degree difference. Appreciate you all for responding.
Cargo Master
Joined: Dec 2007
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I have found most use the Ford Ranger valve, and it is junk...especially the Dorman variety. What happens is it will start to leak at the actuator rod that comes out of the side of the body. I did this mod several years back on my 2000 F350 given it did not come that way. The valve failed just outside of a year, or it's warranty. I started to install one of those 4 way ball valves, then I got to thinking why I did it in the first place as our 2000 Excursion has the valve which is still intact from the factory. This valve has no external moving parts...it's all internal. I found one for an Excursion and thought I'd try it before going to the ball valve assembly. This was a couple years ago and it seems to be doing it's job given no leaks and it will hold 38*-42* depending on the outside temperatures here in south Texas.
Lead Driver
Joined: Jun 2004
Posts: 6,343
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From: Amarillo, TEXAS!
The overwhelming majority of Dorman products are garbage.
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Cargo Master
Joined: Dec 2007
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Yup, but that's mostly what you get nowadays so putting it out there for future reference not to use it.
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Lead Driver
Joined: Dec 2003
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I have found most use the Ford Ranger valve, and it is junk...especially the Dorman variety. What happens is it will start to leak at the actuator rod that comes out of the side of the body. I did this mod several years back on my 2000 F350 given it did not come that way. The valve failed just outside of a year, or it's warranty. I started to install one of those 4 way ball valves, then I got to thinking why I did it in the first place as our 2000 Excursion has the valve which is still intact from the factory. This valve has no external moving parts...it's all internal. I found one for an Excursion and thought I'd try it before going to the ball valve assembly. This was a couple years ago and it seems to be doing it's job given no leaks and it will hold 38*-42* depending on the outside temperatures here in south Texas.
https://www.dieselsite.com/maxacassi...4-200373l.aspx
We had the manual one at first.
Cargo Master
Joined: Dec 2007
Posts: 2,037
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We got a valve from The Dieselsite and added it to Old Green. That was 20 years ago, and it is still working fine.
https://www.dieselsite.com/maxacassi...4-200373l.aspx
We had the manual one at first.
https://www.dieselsite.com/maxacassi...4-200373l.aspx
We had the manual one at first.
Cargo Master
Joined: Dec 2007
Posts: 2,037
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It will be in the heater hoses somewhere up off the firewall in the passenger corner around where the MAP sensor is.
It's a Van Gogh
Joined: Feb 2010
Posts: 7,813
Likes: 1,335
From: Elk Grove, CA
I used the Autozone pn 74809 Ranger valve and followed the method described by nlemerise in the attached PDF.
It is plumbed to work only during Max AC.
No issues last dozen years.
It is plumbed to work only during Max AC.
No issues last dozen years.
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