AC Freon
Postmaster
Joined: Dec 2003
Posts: 4,196
Likes: 11
From: Arizona
Originally Posted by biz4two
GREAT question scraprat! I would like to know that one also...
biz
biz
Sorry for any confusion this caused.
The "Heater Control Valve" is in the heater supply hose about halfway between the front of the engine and the fire wall, on the PSD it is near the oil fill tube.
The "Heater Control Valve" is controlled by vacuum and only shuts the water off when the "manual control head" is in the "Max" setting or the "EATC control head" is in the "Recirculate" setting.
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
On my Ranger, it was also closed in the OFF position. But the question remains -- have you tried turning up the temp while in Max AC mode? It could not be adjusted, so the only adjustment was fan speed. In my '250, I can turn up the temp, so I know there's some hot coolant in the core even when in Max -- something the Ranger valve will stop.
Joe
Joe
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