No Heat 1997 Ford Ranger

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Old 12-01-15, 11:20 AM
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Smile No Heat 1997 Ford Ranger

I have a 1997 Ford Ranger 4.0 with no heat. The heater core is good and I have isolated the problem to the heater valve. When the engine was still hot I manually opened the heater value and I could tell I was getting heat. That worked for about a week than cold air again. So I put in a new heater value and still no heat, if I manually open the value I have heat. No knowing near enough, I am thinking it has to be something wrong with the vacuum line not opening the valve, but I am at a loss at what to try next.
 
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Old 12-01-15, 01:00 PM
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I used to throw those vacuum operated water valves, in the garbage & run a straight pipe. You'll always have heat.
 
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Old 12-01-15, 09:01 PM
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I used to throw those vacuum operated water valves, in the garbage & run a straight pipe. You'll always have heat.
Sounds like a good idea but actually the A/C needs to overcome that heat in the summer.

A better idea would be to open, or block open the valve in the winter and let it close in the summer.
 
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Old 12-02-15, 04:28 AM
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Since I don't use AC, it wouldn't matter to me. I don't know how the valve could be made to stay opened mechanically anyway.
 
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Old 12-02-15, 09:37 AM
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Check for leaks or blockages in the vacuum line running to the valve. You could also install a manual valve with cable that runs into the cab.
 
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