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9400 air conditioner

Discussion in 'International Forum' started by dirttrucking, Aug 31, 2011.

  1. Aug 31, 2011 #1
    dirttrucking

    dirttrucking Bobtail Member

    2
    0
    Aug 31, 2011
    Muscle Shoals AL
    0
    I have a 92 9400. The air conditioner works fine but the blower will not blow very hard. I removed the cover and seat. When it is on high only one of the blower motors is turning. I put a new motor but it did not fix it. The old motor is fine and works on other settings. What could be wrong or how do I trouble shoot. Thanks
     
    dirttrucking, Aug 31, 2011
    dirttrucking, Aug 31, 2011
    #1
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  3. Aug 31, 2011 #2
    josh.c

    josh.c Road Train Member

    1,105
    420
    Feb 22, 2009
    Knoxville, Tn
    0
    I think the second blower you're referring to is the bunk blower.
     
    josh.c, Aug 31, 2011
    josh.c, Aug 31, 2011
    #2
  4. Sep 1, 2011 #3
    dirttrucking

    dirttrucking Bobtail Member

    2
    0
    Aug 31, 2011
    Muscle Shoals AL
    0
    I had a 5000 with no sleeper and it had two blowers too. It will run on certain positions on the switch but not on high. When in high position the air barely blows out. thanks for your reply
     
    dirttrucking, Sep 1, 2011
    dirttrucking, Sep 1, 2011
    #3
  5. Sep 1, 2011 #4
    stranger

    stranger Road Train Member

    3,640
    4,959
    Oct 10, 2006
    NC
    0
    The plug on the back of the blower switch is known for overheating, and melting. Pull the switch from the dash and check the plug. You can buy a new plug from IH.
     
    stranger, Sep 1, 2011
    stranger, Sep 1, 2011
    #4
  7. Jan 6, 2012 #5
    gravelhauler

    gravelhauler Medium Load Member

    630
    412
    Oct 20, 2011
    Lake Charles, La
    0
    I've had this problem with almost every IH i've driven. Once it happened several times on the same truck. I hate sound tacky but I ended up using a toggle switch for the blower that wouldn't run. Might not be very classy but it didn't give me anymore trouble.
     
    Last edited: Jan 6, 2012
    gravelhauler, Jan 6, 2012
    gravelhauler, Jan 6, 2012
    #5
  8. Jan 6, 2012 #6
    mrdevildog

    mrdevildog Light Load Member

    75
    22
    Feb 23, 2010
    Heber Springs, Arkansas
    0
    need to check for power at the motor connector, that will tell you what you need to do next.
     
    mrdevildog, Jan 6, 2012
    mrdevildog, Jan 6, 2012
    #6
  9. Jan 6, 2012 #7
    Duramaxxed

    Duramaxxed Light Load Member

    155
    60
    Jan 2, 2012
    Bourbonnais, IL
    0
    Check the plug @ the resistor. Not sure if there are two on an international. Its either the motor or the resistor.
     
    Duramaxxed, Jan 6, 2012
    Duramaxxed, Jan 6, 2012
    #7
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