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Stock 1995 - 2001 Explorers Questions related to non-modified 1995-2001 Explorer, Mountaineer, Ranger and '02+ Sports and Sport Trac. Problem solving, maintenance, TSB, service bulletins, owner reviews, specifications.

heater doesnt work

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Old 09-06-2006, 09:40 PM   #1
xlt007
Cheyenne Wy
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(Original Poster)
heater doesnt work

ok my heater just stopped working, it blows cold air but it wont blow hot air.. i dsont know why can anyone help?? its a 2000 explorer xlt 4.0 sohc
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Old 09-07-2006, 06:08 AM   #2
NHale623
Eliot, Maine
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Do you have hot water flowing through the heater core?

Is your engines temperature instrument reading normally?
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Old 09-07-2006, 11:30 AM   #3
fobrnno
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do a search for blend door is seams to be a commom problem.
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Old 09-07-2006, 12:30 PM   #4
ma96782
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IMHO......check the engine temp......sometimes it's "T-stat that is stuck open"............replace it. Or clogged heater........so, flush it.

And,

Sometimes, it's a stuck blend door or it's the Ac/Heater, "head unit."

Aloha, Mark
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Old 09-08-2006, 11:49 AM   #5
David Suesz
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US You need to verify whether the

heater blend door is broken, after checking the easy stuff like the hot water valve. Apparently, the failure rate of this door is 100%, and if that's where you are, you need to read my thread on this repair:
http://www.explorerforum.com/forums/...d.php?t=161208
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Old 09-08-2006, 12:11 PM   #6
n0xdw
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Heater tests

Quote:
Originally Posted by xlt007
ok my heater just stopped working, it blows cold air but it wont blow hot air.. i dsont know why can anyone help?? its a 2000 explorer xlt 4.0 sohc
Couple checks, first verify that your antifreeze is up to level. If you are quite low on coolant it will not circulate through the heater core. Also verify as you move the control from full hot to cold you should be able to hear a slight difference in the sound especially if the fan is on high.
I see while i was responding someone else also mentioned verify the operation of the door...
Having done that verify that your engine is warming up properly.. Stuck thermostat? Then put your hands on the two heater hoses with it warmed up and running. If both of them are not hot, you have a circulation problem. Check to make sure the water valve did not get stuck off. If the valve is ok then the Heater core may be plugged. Let us know your results.
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Old 09-08-2006, 12:59 PM   #7
410Fortune
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not 100% my 96 has the OEM door and it has never failed nor been repaired, 153K miles




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Old 09-08-2006, 01:35 PM   #8
David Suesz
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US Yet.

The door is a mediocre design, molded in the cheapest possible plastic. The aftermarket Chinese-made replacement door is easily three times the strength, due to the use of fiber-impregnated plastic. I can tell you this, since it is stiffer, it seals better at full cold and full hot than the OE door ever did.
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Old 09-08-2006, 01:49 PM   #9
ma96782
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I "thought" the heater blend door issue was for the 2nd Gen. Ford Explorers......cause, FORD installed the "wrong" part??

Quote:
I'm pretty sure the problem with the defective one is that, during manufacturing, they put the wrong door in. They used the one for the auto climate control with the manual control setup. The door was not the right size and falls over causing it to jam or break. The replacement has the right door in it.

This is what Ford told me.
Aloha, Mark

PS..............I read it on the internet (the above quote)..............anyway, here is the thread on HOW TO FIX THE DOOR:


http://www.explorerforum.com/forums/...ght=blend+door

Last edited by ma96782; 09-08-2006 at 02:05 PM.
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Old 09-08-2006, 03:16 PM   #10
BrooklynBay
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Check the vacuum lines for leakage. The controls for the blend door require vacuum to function properly. Those color coded plastic lines crack after a while.
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Old 09-08-2006, 03:26 PM   #11
BrooklynBay
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According to this thread: http://www.blenddoorfix.netfirms.com/, it appears that the blend door is electrically actuated.
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