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heater not working 850 1993

posted by  someone claiming to be Leah on  Thu Nov 1 07:10 CST 2007 [RELATED]

I have a 93 850 w/ 180,000.

My dashboard heater will start when the car is turned on, then stop after 1-2 minutes. I have to restart the car before the heater will work again. If I turn the heater & temps off, then turn them on again, the heater will work for about 10 seconds, I hear whirring, and then it shuts off.

Is it my coolant thermostat or something else?

Thanks,
Leah








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    heater not working 850 1993

    posted by  KlausC on  Fri Nov 2 04:31 CST 2007
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 24 10:15 CST 2014
    [RELATED]

    If the engine temp is cold and your blower speed is set to auto, then the fan should stay off until the engine starts to warm up. Sounds like you have a broken thermostat, not engine coolant temp sensor.
    The engine management at start up always turns the blower on for a self check, then turns it off - that is normal.

    Klaus
    --
    The 164 has a new home, all I am left with are a 95 854T and a 98 V70R :)








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    heater not working 850 1993

    posted by  volvocrazed on  Thu Nov 1 10:12 CST 2007
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    last visit: Thu Jul 28 18:15 CST 2011
    [RELATED]

    Leah,

    Please clarify, do you mean that the blower stops pushing air into the cabin (whether it be hot or cold air)?

    Thanks
    --
    '97 850 n/a Wagon, 150K mi








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      heater not working 850 1993

      posted by  someone claiming to be Leah on  Fri Nov 2 00:50 CST 2007 [RELATED]

      Correct; air blows during the few minutes it's working, then no air after 2 minutes.

      I did notice yesterday that when the heater was not working that the temp gauge was at the bottom. This morning, I let the car run for 5 min, and the gauge was slowly making it's way to the middle. I turned the heater on, and it worked. In light of this additional info, is it stuck/frozen? And if it's just temperamental, would replacing the part fix the problem?

      Thanks,
      Leah







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