Question about 2002 Ford Expedition

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I have a 2002 ford expedition blowing hot air out of the rear a/c. The front a/c works fine. I have checked the flapper valves and both are working properly and have concluded that the problem must be around the expansion valve or the condensor itself. The one line running from the expansion valve to the condensor is cold and the other is hot. The only thing I can conclude is that freon is not running through the condensor because of a blockage. Any thoughts?

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  • mickey9000 Oct 10, 2010

    Forgot to mention that the blower motor is moving air across the condensor and through the system. I remove a plug/thermistor/coil board and see directly into the housing where the condensor is located and can feel the condensor is not cooling.

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6 Suggested Answers

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Posted on Jan 02, 2017

  • 142 Answers

SOURCE: a/c problem

You either have a bad control, or motor running the air direction door in the front HVAC unit, or a door that is stuck.

The front and rear units are totally separate.

The door directs where the air, cold or hot, should come out, whether it is panel vents, floor, defrost, or any combination of those.

This door and motor are located inside the heater box which usually requires a lot of the vehicle dash assembly to be taken apart to get to these parts.

Posted on Aug 28, 2008

warlock61
  • 659 Answers

SOURCE: My 2002 Ford Expedition Front

check the coolant level make sure it is full and there is no air in the system.

Posted on Jan 01, 2009

alicantecoli
  • 22095 Answers

SOURCE: Ford Expedition 2002 Front Heater blows cold air below 45 MPH

impeller is made of plastic on teh water pump and its slipping and spinning on the shaft renew before weather warms up as engine will overheat

Posted on Jan 01, 2009

michigan man
  • 3533 Answers

SOURCE: Replace the A/C exansion valve

i am not really sure on this but try these websites fix & troubleshoot heating & A/C its www.automedia.com and the other one is car A/c repair www.directgardening.com if you have a autozone near you there you can rent the special tools you will need take them back and get your money back try www.autozone.com

Posted on May 25, 2009

  • 240 Answers

SOURCE: Where is the expansion valve on a 95 Lexus es300

It is attached to the back wall of evaporator. You have to remove the glove compartment, blower unit and evaporator to get access to the expansion valve.

Posted on Jul 04, 2009

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Shelly,

Buy used parts at car-part.com. Look on page with * to find the cheapest part. Coud be your temp blend door (#2) may not be moving back and forth. Or, you are not getting hot water to the rear heater core.

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You may have to crawl under the truck and feel the heater hoses to see if they are hot. You will find a group of 4 lines, 2 for heater and 2 for a/c. If hot, you know hot water is getting back to the heater core. If not, there may be a hot water vave that's not working. Not sure if EXP. has a water valve for rear.

Let us know what you you find. Good luck.

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impeller is made of plastic on teh water pump and its slipping and spinning on the shaft renew before weather warms up as engine will overheat

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