Question about 2000 Ford Expedition

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Heater not producing hot air

Want to check the heater control valve on my 2000 expedition. can you tell me where it is located within the vehicle?

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Look between engine and heater core on heater hoses. It will be there on one hose or the other.

Posted on Dec 28, 2008

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Air conditioning will not switch from defrost vents


Vacuum control motors are used to position these airflow control doors.
SECTION 412-01: Air Distribution and Filtering 2000 Expedition/Navigator Workshop Manual DESCRIPTION AND OPERATION Procedure revision date: 06/17/1999 Air Distribution There are two sources of air available to the air distribution system:
  • outside air
  • recirculated air
Recirculated air is only used during MAX A/C, AUTOMATIC (if equipped with EATC) and OFF modes.
Air distribution within the vehicle is determined by the function selector switch position, if equipped with manual A/C, or is controlled by the electronic automatic temperature control system in the AUTOMATIC mode but can be overridden by the driver if desired. Airflow control doors are used to direct airflow within the heater air plenum chamber. Vacuum control motors are used to position these airflow control doors.
The air distribution system is designed to provide airflow from the defrost nozzle when no vacuum is applied to any of the vacuum control motors. This is done to prevent a situation where defrost cannot be obtained due to a system vacuum leak.
Air enters the passenger compartment from the:
  • instrument panel A/C registers.
  • heater outlet floor duct.
  • windshield defroster hose nozzle.
  • side window demisters.
  • rear seat airflow duct (if equipped).
Passenger compartment air is exhausted from the vehicle through open windows or cab air vents.


expedition air flow hvac system-xvcmtr1jbqa4kfrdszeh0lpe-3-0.gif Item Part Number Description 1 18A318 Vacuum control motor - panel/defrost door 2 18A478 Panel/defrost door (full vacuum position) 3 - Defrost airflow 4 - Side window demister airflow 5 18B545 Temperature blend door (full heat position) 6 19860 A/C evaporator core 7 19A813 Air inlet duct door (full vacuum position) 8 - Outside air inlet 9 18A318 Vacuum control motor - air inlet duct door 10 - Recirculated air inlet 11 19805 Blower motor 12 - Vacuum to emission control 13 - Vacuum from the engine intake manifold 14 19A563 A/C vacuum check valve 15 19A566 A/C vacuum reservoir tank and bracket 16 19B888 A/C-heater function selector switch 17 18476 Heater core 18 18A559 Floor/panel door (full vacuum position) 19 - Floor airflow 20 18A318 Vacuum control motor - floor/panel door 21 - Panel vent airflow
Check vacuum control to the panel defrost motor ( vac,diaphragm )

Nov 01, 2017 | 2001 Ford Expedition

1 Answer

I have a 2000 ford expedition and the heater blows air just not hot air or even warm air.. weve already changed out the thermostat, heater core, heater control valve and it still isnt working.. what could...


Check the vacuum hoses from the switch to the engine compartment. If you manually operate the heater valve on the firewall (follow the 5/8" hose) you will get heat.

Feb 08, 2011 | 2000 Ford Expedition

2 Answers

I have no heat in my 2000 expedition. I have


check thermostat and both heater hoses

Jan 02, 2010 | 2000 Ford Expedition

3 Answers

Can not find heater control valve 2000 expedition


what year? for 2000, there are no control valves. It mixes a/c air with heater core air to blend the right temp.

SECTION 412-02: Heating and Ventilation 2000 Expedition/Navigator Workshop Manual
DESCRIPTION AND OPERATION Heating/Defrosting The heating and defrosting system has the following features:
  • Controls the temperature and, during A/C operation, reduces the relative humidity of the air inside the vehicle.
  • Delivers heated or cooled air to maintain the vehicle interior temperature and comfort level.
  • Controls the A/C blower motor speed.
  • Cooling or heating can be adjusted to maintain the desired temperature.
  • Uses a reheat method to provide conditioned air to the passenger compartment.
  • The blower motor draws outside air through the A/C recirculating air duct, except for MAX A/C cooling, when recirculated air is used.
  • All airflow from the blower motor passes through the A/C evaporator core.
  • The temperature is then regulated by reheating a portion of the air and blending it with the remaining cool air to the desired temperature.
  • The temperature blending is controlled by the temperature blend door, which regulates the amount of air that flows through and around the heater core, where it is then mixed and distributed.
------------------------------------------------------------------------------------------------

Dec 01, 2009 | Ford Expedition Cars & Trucks

1 Answer

My heater is not blowing hot air in my 2000 ford expedition.I put an new thermastat in, and it still does not get hot.


Check the heater control valve and see if it's operating properly. This should be on or close to the firewall behind the engine. There will be coolant hoses attached to it. There should be an arm or lever on the valve which is attached to a cable coming from inside the car. Moving the heater temperature control inside the car should cause this arm to move, thereby allowing hot coolant to enter the heater core. If this arm doesn't move freely, you don't get heat.

Oct 18, 2009 | 2000 Ford Expedition

1 Answer

2005 chevy truck a/c works cant get heat blows cold


This sounds like a valve problem, or a heater/ cool air door stuck.
Many GM vehicles, have under the hood, a valve, it is electronic or vacuum controlled. When you switch the lever to heat, this valve opens, thus letting hot water flow through to the heater core.
On some newer models, there is a door (flap so to speak) within the interior compartment. This flap opens and closes between heater core and interior, thus controlling hot air flow.
Have you check to insure there is sufficient coolant in the system?
Low coolant levels will also cause no heat, but will also show signs of engine running warmer, sometimes much warmer than it should.
The valve under hood was as used on my 1995 Astro van. the mechanism looked to work as you could see shaft move in and out, problem was the diaphram or flap in valve on end of shaft (inside valve and not visible) was detached.
The other method, interior door or flab within heater box assembly was a problem on my 1998 Ford Expedition.
Yours, being GM, I would check for this valve under hood. It will be somewhat obvious in most cases as it will have heater tubes running into it and from it into firewall.

Oct 12, 2009 | Chevrolet C2500 Cars & Trucks

2 Answers

Heater is blowing but its cold air not hot air 2000 expedition


Make sure the heater core is in the open position by using the shut off valve and turning it to open. next, you may have a malfunction in the direction door the directs the air flow in the dash. a lever may have become lose or separated. may be a bad servo motor not directing the door to move to the heater position. i would start by checking that shut off valve first on the heater core.

Mar 13, 2009 | 2000 Ford Expedition

1 Answer

Air id warm not hot where is the heater control valve located


remove the glove box and look left blend door motor is sticking

Jan 17, 2009 | 2000 Ford Expedition

1 Answer

2000 ford expedition


HI....
The heater on your Vehicle it can be a few problems.
I will mention the Importants.

First. Check the temperature, The temperature has to be At least 140 Farenheit.
Second. With a Temperature gace check the temperature of the 2 small hoses going to the Heater core. If the Temperature is almost the same on each of the small hoses, and Close to the temperature of the engine. The circulation is good.
But if only One of the hoses are Hot and the Other no. Is because is there a restriction in the Heater core, and will be nesesary to clean or replace.

Third.. Check the Blend door actuator motor. ( Is the actuator to move from cool to hot air )
Is located at center of the Instrument panel. at lower of the Hvac housing.
Is there behind the Center console.

Ok... Check the step I giving and letme know.
Thank you for use fixya...

Nov 20, 2008 | 2000 Ford Expedition

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