Question about 1999 Ford Explorer

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Why doe's my heater blow cold air on my 1999 ford explorer is my thermostat blocked, or is it in the heater core? I can not smell any thing like the motor getting hot or any antifreeze?

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I would 1st check , and replace the thermostadt, it sounds like it is operating in the open position, start the engine up and let it warm up, and carefully put your hand on the top radiator hose near the thermostadt, if it is not hot, i would replace the thermostadt.

Posted on Feb 11, 2011

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Could be either the heater control valve or a blocked heater core. Make sure engine coolant is at the proper fill point.

Posted on Apr 26, 2010

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1 Answer

Smell of antifreeze and heater blowing cold air in my 97 eclipse


Check heater core location for leakage. If no heat is coming out when you have the temp set to hot, chances are you have a blocked heater core. If you smell antifreeze from heater fan, you may have a leak in the box that contains the heater core. Your windows may fog up too, if you keep the heater on for a bit, but this happens more often if the air coming out is warm, or hot. Hope this helps!

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im not sure if you mean the blower is'nt working or if you mean the blower is working but the air is cold so I'll try to answer both, if the blower is'nt working it is possibly a bad fuse, the fuse panel may list it as the heater or it may say blower, now if its blowing but the air is cold it is most likely a bad thermostat, sometimes the heater core goes out but if you havnt noticed the window fogging on the front windshield on the passenger side or smelled coolant in the cab of the vehicle the heater core is probably fine , the thermostat is a common culprit and they are fairly easy to change, one other thing before you go changing anything, check to make sure the radiator is full, with the car cool take the radiator cap off and run the car until it starts to get warm and see if you can add some coolant

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1 Answer

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If they are..........

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2 Answers

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sounds like the controller went bad use temp checker see what your temp is at inlet of heater core from hose

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2 Answers

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