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heaters blowing cold

  1. BMW 3 Series Forum - Technical Talk on the BMW E21
    1996 316iSE- Heater blowing only cold and no Climate control screen display. fitted new Thermostat and bled cooolant system. Any ideas would be helpful. Thanks
  2. BMW 3 Series Forum - Technical Talk on the BMW E21
    Hi all, my internal fan heater has a problem. The fan blows cold air when idle or is driven below 1500 rpm.....when I am driving at anything above 1500rpm the fan blows out hot air. any ideas about which compinent could be faulty would be greatly appreciated. Many thanks in advance Hurley.
  3. BMW 3 Series Forum - Technical Talk on the BMW E21
    hi guys the heaters were working the other day but now they only blow cold, i hope the old head gasket isnt on the way out. the temp is always in the blue so i cant think what is wrong? anyone got any ideas, much appreciated!
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