Question about 2001 Ford Expedition

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The rear heat and ac is running on high when you turn the front on and the switch is set to off

Changed the heater core and now when you turn the heat on the back is running on high even though the switch is turned to off

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  • Ford Master
  • 1,632 Answers

Also put the switch at dash to off for rear blower .

Posted on Dec 14, 2014

6 Suggested Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: front panel temperature control switch

Very likely the blend door is broken. This door is mounted beside the heater core, blends cool air with hot depending on the position of the door. At the bottom of the door at the hinge point, there is a gear and coupling driven by an electric motor to position the door. The coupling is a drive much like a square drive ratchet and socket made of plastic and often cracks allowing the drive to turn without changing the door position. I've heard you can drill through the outer housing and put a screw in the door through the drive gear, but you would have to know your way around this area well.
I repaired mine by replacing the blend door, a big job at best. The entire dashboard must come out to access the top of the heater core housing which must be removed.

Posted on Oct 12, 2008

michigan man
  • 3533 Answers

SOURCE: 2000 expedition heat problem

first of all I would make sure the car has proper amount of coolant and you are right it is very possible you have an air pocket in the system also ask your self did you change the thermastat after you did the heater core when the car is cold make sure there is coolant at the cold mark on the reservior bottle because you might not have enough coolant then start the car and get it up to temp and if the coolant goes not go up to the hot mark when the car gets to temp you do not have enought coolant just keep adding coolant and you will see the bubble after the thermastat opens

Posted on Jan 12, 2009

  • 1 Answer

SOURCE: No front heat

where is the heat blend door located 97 ford e-350 van

Posted on Feb 16, 2009

jturcotte
  • 8202 Answers

SOURCE: I have a 2001 Ford Taurus with heater issues.

No, there is no valve in your car. The likely problem is a clogged core. Would you like instructions for replacing it?

Posted on Dec 28, 2010

silverado195
  • 1 Answer

SOURCE: temp control switch does not regulate temp i get heat on all settings except max ac

yes it is the switch. You have to pull the radio then the outer trim panel then the eltronic control assembly it is only a 30 .00 part but a pain to do

Posted on Mar 27, 2013

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3 Answers

1998 Ford expedition motor not running hot enough


The engine is running at 210 you can be sure of that

Look at scan tool data

Your cabin heat issue may very well be several HVAC Blend
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That data should be on the scan tool as well in enhanced data
& go to the hvac module

You can switch the heat or air flow to test if they are switching properly

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Rear a/c heat vent do not work


Sounds like the flapper valve for the rear heater/AC core is not doing its job to send the air through the AC core when called for.

Another clue of this is the fact that the air is coming out on the lower vents when it should be up high fro AC.

Have someone listen back by the fan inlet in the back usually on the right while you switch between AC and heat to see if they hear any noise or change in air flow.

Worst case is that the interior panel there has to be removed to service the assembly behind it.


Jul 06, 2010 | 2000 Dodge Caravan

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Rear heater not getting hot after by-passing front heater core which is leaking.


Hi:
Your vehicle only has one set of connections to the heating system, and you disconnected them when you bypassed the heater core. There is not a seperate heater core for the rear heat, just ducts off of the front heat.

Dec 11, 2009 | 2000 Ford Expedition

3 Answers

I have rear AC that works perfectly, but the front AC only blows hot air what do i do to fix it?


replace the temp door actuator motor,it is up under the dash ,a flat square block looking thing with 3 screws holding it on u will see two the one u need to change is usally on the bottom

Jul 06, 2009 | 1999 Ford Expedition

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Rear heat or rear air conditoner not workin in my 1997 gmc safari


two different problems !

Rear heater problem: find under the hood where is hose for cooling liquid goes to front heating core!
you will see there also vacuum tubesgoing in to little valve ! disconnect the vaccum tubes ( engine off)
and spray in wd 40 in to the vlave ... valve is stuck and wont open flow to rear heater !

you do not have to replace tha thing . its very well made and because you dont turn this often in summer
it gets stuck. i had same problem. also make sure vacuum is working - Engine running turn rear heater on - vacuum sucks to open valve. and before that make sure fuse is ok .

for rear AC mine does not work either and it is leak on pipes that go from front to rear .. 10 feet of pipes and tubing $$ expensive repair ... forget it ... open the window...

jebadiah

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2001 tahoe front heater not working, rear heater blows warm air


Notorious for plugged heater cores. Also updated plastic restriction couplers mounted at heater core available from dealer. Try back flushing heater core. Run engine till its at operating temperature then carefully hold the inlet and outlet hose breifly with heater fan on high if hoses are nearly the same temp then flow is good , if not then core is plugged.

Jan 18, 2009 | 2001 Chevrolet Tahoe

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Heater valve


there is no heater control valve in this truck, heat control is done through what are called blend doors. So the issue may be the front blend door motor has failed, this is very common on all Ford heatimng systems except the Focus.

Dec 15, 2008 | 2000 Ford Expedition

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