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2229Heater valve control

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  • nico_visser100
    Feb 24, 2004
      I Ahve a 1986 520i with a problem on the heater valve control, well I
      suspect that. When the top and bottom air vents inside the car is
      open it pushes in hot air all the time.I have had the valve
      controller replaced with a 2nd hand part because initially it did not
      let any hot air into the cabin and now it never stops! I have checked
      the heater control knob inside the car but only get 12V or 0V readout
      on my multimeter at the plug connection when turning the knob.
      Can anyone help please?I only recently aquired the car and have to
      learn a lot.

      Thanks,
      Nico (South Africa)
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