WHAT WOULD CAUSE MY HEATER TO ONLY BLOW OUT COLD...

1999 Ford Ranger

Tiny

PaulaKE

November, 30, 2012 AT 7:50 PM

What would cause my heater to only blow out cold air in my 1999 Ford Ranger truck? I had a new therrmostat put in, and I had the heater core flushed out. My antifreeze is full. The truck does not run hot. It stays normal. It's strange because a few times I have had the heater off and would turn it on to try it, and it would blow hot air for about a minute, and then it would start blowing cold again. It doesn't do that every time but just once in a while. What is going on with it? Service technicians seemed to be stumped.

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