Question about 1999 Ford Expedition

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Heating and cooling in ford expedition

Only heat come thur the middle and rear vents front blow mid warm

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  • boomer_x7 Dec 21, 2008

    i have the exact problem myself

  • presy Jan 10, 2009

    my middle and rear vents also blow heat even if the temperature is set on coldest but the front is giving cool air...so i had to switch off the middle and rear vents when i need to put the A/C on..pls help. tnx.

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  • 393 Answers

You have a blend door prob

Posted on Dec 18, 2008

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1 Answer

Rear air vents ford expedition


check that the coolant is getting to the heater core for the rear vents.. Check Control tap in the hoses turned off or transfer pump not working

Feb 01, 2014 | Cars & Trucks

1 Answer

All my heater vents blow air when heat is on, but only the front gets warm air...all rear vents only blow cold air no matter how you have the heater set...not sure what the problem could be.


there is a diverter valve that lets hot water from the engine into a heater core, which is a device like a small radiator, which heats the air when it flows past. there is probably a second heater core for the rear. the valve for that one, or the switch or relay to control it is bad.

Dec 09, 2013 | 2004 Ford Expedition

1 Answer

Rear heater puts out more heat than the front. The front heater just blows warm air only.


check to make sure all the venting is attached and that the vent doors are opening all the way

Apr 15, 2010 | 1999 Ford Expedition

1 Answer

Front heat works, but rear blows cold air only


With your front heat working the most likely cause for the rear heat not to work is that there is an obstruction in the line that is preventing the warm coolant to get to the rear heater core or the rear heater core itself is plugged and not circulating. Another possible cause could be low coolant level where the system has enough coolant to provide the front system with enought warm coolant but not the rear system. Hope this helps

Dec 30, 2009 | 2004 Ford Expedition

3 Answers

Why does my Heater blow cold air in the front


its the blend door behind the glove box. I had the same problem

Nov 11, 2009 | 1998 Ford Expedition

3 Answers

2004 Ford Expedition XLT, front blend door actuator


Hope I was avle to help, glad you up and going.

May 26, 2009 | 2004 Ford Expedition

1 Answer

1998 FORD EXPEDITION AC/HEATER BLOWER


This problem is caused my the blend door actuator motor, the electric motor turns to allow the flap to open either to cool or heat and then through the vents. The problem has been either the motor is going bad or the actual motor stops working. There are small plastic gears that strip in the motor causing this. I have replaced several in the rear unit. The front one is under the dash next to the heater core. The dashboard must be removed. It is a big job.
Please rate me and let me know if this helped.

Feb 11, 2009 | 1998 Ford Expedition

2 Answers

2004 Ford Expedition rear floor cool/heat


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Item Part Number Description 1 — Air inlet door 2 — Temperature blend door 3 — Headliner airflow 4 — Auxiliary mode door 5 — Floor airflow 6 18476 Heater core 7 19860 Evaporator core 8 19805 Blower motor
The auxiliary A/C and heating system has the following features:
  • The auxiliary A/C and heating system is functional whenever the instrument panel mounted A/C control is in any position except OFF.
  • The auxiliary blower motor recirculates the air inside the vehicle. Outside air is not available to the auxiliary system.
  • Air is cooled and dehumidified by the auxiliary A/C evaporator core only if the instrument panel mounted A/C control is adjusted to a position that requires A/C compressor operation.
  • The temperature blend door and the auxiliary mode door are controlled by electric actuator motors.
  • Movement of the auxiliary temperature control between COOL and WARM causes a corresponding movement of the temperature blend door to mix air flowing through and around the auxiliary heater core.
  • Movement of the auxiliary mode control between PANEL and FLOOR causes a corresponding movement of the auxiliary mode door to direct air flow between the panel (headliner) registers and the floor duct.
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I would say the auxiliary mode door (#4) electric motor is not wokring.

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Auxiliary Blend Door Actuator —Air Distribution Removal and Installation
  1. Remove the RH quarter trim panel cup holder and access panel.
  1. Remove the screws.
  1. Disconnect the blend door actuator electrical connector.
  1. To install, reverse the removal procedure.

Jan 14, 2009 | 2004 Ford Expedition

1 Answer

1999 ford expedition,interior heat not working properly


have you checked the thernostat. sometimes it gets stuck in the open position and that will make your car run cool

Dec 08, 2008 | 2000 Ford Expedition

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