Repair AdviceCars

1993 Ranger Heater Not Working

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?

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By Tommy from Mcdonough, GA

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December 29, 20090 found this helpful

The thermostat may be stuck open.

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December 30, 20090 found this helpful

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.

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Anonymous
January 20, 20160 found this helpful

Posible water pump missing fins

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