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Heater problems, Not blend door?

Discussion in 'General Explorations!!' started by 84gt, January 1, 2005.

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    1. 84gt

      84gt New Member

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      City, State:
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      Hi
      I have a 1995 Explorer and I am getting no heat from the air system. The temp gauge was reading low so I changed the thermostat and I now get some heat when I floor it WOT. I checked the Blend door and it looks ok, actuator is working and the door shaft has the D shape.
      The only other things that I can think of are a pluged heater core or the vaccum valve that is in line with the heater hose.
      Is there any thing that I am missing? Any suggestions on how to troubleshoot it? :)

      Thanks Rick
       
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    3. Four0Sport

      Four0Sport Jack Pewe Elite Explorer

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      is the fan kicking in fine? if so, then its prbly the vaccum actuator or the heater core itself.
       
    4. 84gt

      84gt New Member

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      Fan works, I will check the heater core next.

      Thanks Rick
       
    5. nascar_intimid

      nascar_intimid Active Member

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      Sorry!!! but when you said you got a little heat when you floored that is the perfect diagnosis for a plugged heater core...been there done that
       
    6. nascar_intimid

      nascar_intimid Active Member

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      disconnect your inlet and outlet lines on your firewall and blow through it with compressed air or whatever you have at your disposal if you can get your lips in there try that it is easy to blow through an unplugged heater core
       
    7. pear

      pear New Member

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      I'd say many of us would benefit from a good cooling system drain and flush !!!!!!!!!!!!!
       
    8. DEM723

      DEM723 New Member

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      I won't argue a clogged core when the higher rpm's causes more heat. But why would the guage read low, even after the T-stat was replaced? I don't think the core would have a cool effect on the guage. I have recently purchased two 96's and both have shown low end guages and only luck warm heat and greatly noticed on cold days. I have'nt gotten into them yet, but am looking for common problems & ideas.
       
    9. nascar_intimid

      nascar_intimid Active Member

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      Just because your heater core is plugged or semi plugged does'nt mean you have no water circulation. You have lots of circulation in your block that keeps cool. The heater core is just a (finger on your hand) if you will...
       
    10. nascar_intimid

      nascar_intimid Active Member

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      I have only owned my "x" for a few weeks and I notice the luke warm water also...piss me off!! So I think I will put a winter t-stat in and also cover up my radiator but not my tranny cooler and see if that helps
       
    11. Eneurb

      Eneurb Active Member

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      Cover-up the radiator??? I think we call that the "Redneck Thermostat"... I think you should look into what is wrong with your cooling system instead.
       
    12. 84gt

      84gt New Member

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      "I won't argue a clogged core when the higher rpm's causes more heat. But why would the guage read low, even after the T-stat was replaced?"

      The gauge was reading normal after the thermostat was replaced and I started to get some heat if the Explorer was run hard. Before I changed the thermostat I did not have any heat. Hope that clears things up.
       

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