2002 Sante Fe heater/AC problem

Discussion in 'General Motoring' started by MarvV, Jan 27, 2006.

  1. MarvV

    MarvV Guest

    My Sante Fe has been the best car I have ever owned. I have 138K miles
    and the only issues I have had have been minor.
    My current heater/AC problem is intermittent but often the fan does not
    blow any air. I can change fan speeds, hear the fan speed faster or
    slower but no air flows. Could it be related to the defrost setting?
    It will work for 5-30 minutes, then stop working, then start working
    again. Same with the A/C.
    My other issue (unrelated to the heater/AC) is I hear a "whoop" sound
    intermittently but I can not repeat it intentionally. I can not tell
    where it is coming from since it is always just a very short sound.
     
    MarvV, Jan 27, 2006
    #1
  2. MarvV

    hyundaitech Guest

    It'd be very odd for the blower to operate but not move any air. This
    implies some sort of blockage to the air passage. I'll presume you don't
    have all the air registers shut.
     
    hyundaitech, Jan 27, 2006
    #2
  3. MarvV

    MarvV Guest

    Correct, the air registers are open. Air will blow for awhile, then
    stop for 10 minutes to many hours. Sometimes I will shut it off for 20
    minutes and when I restart it might work, might not. I'm trying to
    find a pattern but have not been successful yet. Closest I can tell it
    may be related to if the defroster (A/C) is running or just the heater.
    It seems that something may be freezing over and not allowing an
    internal door to open -- is that possible? Is there a sensor that
    might be causing this ?
     
    MarvV, Jan 28, 2006
    #3
  4. MarvV

    MarvV Guest

    Correct, the air registers are open. Air will blow for awhile, then
    stop for 10 minutes to many hours. Sometimes I will shut it off for 20
    minutes and when I restart it might work, might not. I'm trying to
    find a pattern but have not been successful yet. Closest I can tell it
    may be related to if the defroster (A/C) is running or just the heater.
    It seems that something may be freezing over and not allowing an
    internal door to open -- is that possible? Is there a sensor that
    might be causing this ?
     
    MarvV, Jan 28, 2006
    #4
  5. MarvV

    MarvV Guest

    Correct, the air registers are open. Air will blow for awhile, then
    stop for 10 minutes to many hours. Sometimes I will shut it off for 20
    minutes and when I restart it might work, might not. I'm trying to
    find a pattern but have not been successful yet. Closest I can tell it
    may be related to if the defroster (A/C) is running or just the heater.
    It seems that something may be freezing over and not allowing an
    internal door to open -- is that possible? Is there a sensor that
    might be causing this ?
     
    MarvV, Jan 28, 2006
    #5
  6. MarvV

    hyundaitech Guest

    That's certainly a possibility. If the evaporator freezes over, the air
    won't be able to flow through it. There's a thermostat in the evaporator
    that is intended to shut off the a/c compressor when the evaporator
    temperature gets too low.
     
    hyundaitech, Jan 28, 2006
    #6
  7. MarvV

    MarvV Guest

    Where is the evaporator and how do you get to it? I have talked with a
    Hyundai Service Manager and he said to bring it in when it is not
    working. It is so sporadic that each time I bring it in it has not
    failed for the mechanic. Could turning of the defrost/AC help to
    "unfreeze" the situation and make it work again?
     
    MarvV, Jan 30, 2006
    #7
  8. MarvV

    hyundaitech Guest

    The evaporator is behind the right side of the dash. You won't be able to
    get to it without at least partial dash disassembly.

    Ask if you can bring the car by when it's not working so someone can at
    least experience the condition right then. Based on your description, it
    sounds as if once you drop it off and it gets parked out back for a couple
    hours, the condition disappears.
     
    hyundaitech, Jan 30, 2006
    #8
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