2004 Kenworth T2000 heater blows through defrost vent

Discussion in 'Trucks [ Eighteen Wheelers ]' started by bigguy27455, Nov 19, 2012.

  1. bigguy27455

    bigguy27455 Bobtail Member

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    So I typically drive dump trucks for the state, however, my dad has been driving tractor trailers for years. Now he is driving a '04 Kenworth T2000 that has been worn out. The temperatures are dropping and it would be nice to get some heat to blow out of the panels. The blower works and blows heat, for now anyway. He said that it mainly blows out of the defrost vents. When he hits a big enough bump the heat will blow on heat through the floor, but the next bump will send it through the defrost vent. I tried looking into it more, but I couldn't even get to where I could see the flappers. Any ideas of what to try? Thanks!
     
  2. Gear head

    Gear head Medium Load Member

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    It should have a air soliniod in right side of glovebox inside of the glovebox. This control moves the flaps.
     
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  3. Hardlyevr

    Hardlyevr Road Train Member

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    And if the solenoid is working, you may have a broken door or a plate that is off its hinges, making the air go someplace other than where it is supposed to.
     
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  4. bigguy27455

    bigguy27455 Bobtail Member

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    Okay, we will check it out. Thanks!!
     
  5. superhauler

    superhauler Super Crusty

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    there is also an electric accuator on top of a/c-heaterbox on the outside of cab it's right on top under a plastic cover. they are prone to moisture and will act up when this happens(one minute it will blow defrost the next it will be on the floor). on the T2000's.
     
  6. bigguy27455

    bigguy27455 Bobtail Member

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    Okay, I will check it out as well. One other thing I was wondering. How do you get to the flappers to make sure they are on their hinges and working properly. Do you go through the dash or can you get to it from under the hood. I didn't want to pop off any trim or anything unless I was for sure I could get to it. Thanks!
     
  7. Gear head

    Gear head Medium Load Member

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    Did you find the problem?