heater control valve location
Laughing Gas
Joined: Jul 2002
Posts: 770
Likes: 12
From: Moneta, VA
That's what mine looked like on my '95 4-cyl, with are, but's a manual.
Now that I look, it could also look like these:
There is also a chance it could have been elminated by someone. I'm not completely sure about the HVAC system on the Rangers, but many cars don't use a heater control valve, they just let the coolant into the heater core all the time.
Now that I look, it could also look like these:
There is also a chance it could have been elminated by someone. I'm not completely sure about the HVAC system on the Rangers, but many cars don't use a heater control valve, they just let the coolant into the heater core all the time.
Laughing Gas
Joined: Jul 2002
Posts: 770
Likes: 12
From: Moneta, VA
Originally Posted by 98range
I have a 98 ranger with the four port valve. A vacuum line connects to the valve. What makes the valve open or close? Does it close off the coolant into the heater core when closed?
It does block the coolant from the heater core when closed.
Senior User
Joined: Mar 2007
Posts: 111
Likes: 1
Why then is it hot either on a/c or heat? Only max a/c is it cool but not cold air. I did the fix on the blend door but don't think it worked. I guess I just want to know which control shuts the heater valve so no hot coolant enters the heater core.
Thanks for your answer.
Thanks for your answer.
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Post Fiend
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From: Connecticut
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Post Fiend
Joined: Jan 2003
Posts: 9,748
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From: Connecticut
Originally Posted by Tiggie
In the OFF position, I'm sure it doesn't open.
Senior User
Joined: May 2007
Posts: 149
Likes: 0
From: Overland Park, KS
I know this thread is kind of old, but I'm having the same problem. The heater control valve on my '98 Ranger isn't shutting off the heat. Just like 98Range and Rockledge's. Did you guys get this fixed? How?
Post Fiend
Joined: Jan 2003
Posts: 9,748
Likes: 16
From: Connecticut
Originally Posted by Pinhead-227
I know this thread is kind of old, but I'm having the same problem. The heater control valve on my '98 Ranger isn't shutting off the heat. Just like 98Range and Rockledge's. Did you guys get this fixed? How?
Senior User
Joined: Mar 2007
Posts: 111
Likes: 1
Yes I got mine fixed. I bought a new blend door from Rock Auto Parts for about $9.63. I cut a hole in the bottom of plenum to remove old door. I drilled a 3/4" hole with holesaw to lift out the door.(dimple in molded plenum that held old door)
I then used a 1/2" copper cap to a 3/4" long piece of copper pipe and soldered it to a 9" piece which I screwed to the bottom of the plenum.
The copper cap holds the bottom of the door in position as the piece of plastic I drilled out. If you want to talk by phone PM me with your # and I will explain in more detail.
I then used a 1/2" copper cap to a 3/4" long piece of copper pipe and soldered it to a 9" piece which I screwed to the bottom of the plenum.
The copper cap holds the bottom of the door in position as the piece of plastic I drilled out. If you want to talk by phone PM me with your # and I will explain in more detail.
Senior User
Joined: May 2007
Posts: 149
Likes: 0
From: Overland Park, KS
Sounds like a cool fix. I'm in the process of trying the "Blend Door Fix" with the actuator. One problem, though...
What do I do if I drop my ratchet behind the actuator? Mine was held down with 3 screws, and when trying to get to the rear one (front of the pickup) it fell and I can't reach it...
What do I do if I drop my ratchet behind the actuator? Mine was held down with 3 screws, and when trying to get to the rear one (front of the pickup) it fell and I can't reach it...