Mechanics

NO HEAT

1999 Ford Explorer • 120,000 miles

So my 1999 ford explorer limited 6 cylinder 4, 0 SOH has no heat. Well it gets sorta warm. The AC works great. But with winter time in central New York and a 4 month old. New born and a 5 year old heat is a necessity. I've changed the thermostat hoping that would be it. The temperature gauge in the vehicle also stays real low not even close to half way between c and h so I'm guessing that has something to do with it. Any help would be greatly appreciated. This site and everyone on here has been a tremendous help with any issues I've had. So THANK YOU ALL.
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AdamClev
November 12, 2013.




Your thermostat may be faulty (stuck open all the time) just because it is new better re check it, also with the engine as hot as it gets feel that both heater hoses are hot to touch, if not you may have a blocked heater core, start here.

Mhpautos
Nov 12, 2013.
I had a thoughtnthe thermostat may be faulty. (Hopefully) will check the hoses as well. The hoses your talking about bare the ones near the firewall correct? I've heard the heater core is an bear to change in the truck. (Taking apart whole dash possibly?) Thank you for your response will post back when I have checked theses option provided.

Tiny
AdamClev
Nov 12, 2013.
Yes check the 2 hoses entering the fire wall, these are the heater hoses.

Mhpautos
Nov 12, 2013.
Upper heater hose is quitenanbit hotter than lower.

Tiny
AdamClev
Nov 14, 2013.
You may have a part blocked heater core, try flushing first.

Mhpautos
Nov 15, 2013.
How would I go about that also just noticed whole sitting out in the truck idleing with the heat on there is an on and off "growling" noise. Stops when I turn off heat
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Tiny
AdamClev
Nov 15, 2013.
Take heater hoses off and use a garden hose to see what flow is through the heater core, the noise may be an air lock in the system, you will need to make sure all air is bleed from the cooling system as well.

Mhpautos
Nov 15, 2013.

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