My 1993 Ranger won't heat up. I've put in 3 different thermometers, drained and flushed the radiator, new heater core, new temperature sending unit and still no heat. The temperature gauge won't rise above the "C" and the heater blows cold air. Any suggestions?
By Tommy from Mcdonough, GA
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Most vehicles have some sort of valve in the heater hose to allow water to pass through the heater core , it can be not working. Then there is the mixing door for the heater and AC. It could be stuck in the AC position (either works by vacuum or electric). It also could be the controls in the dash.
Posible water pump missing fins
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