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  1. 1996 E39 523i se...Heater blowing hot then cold

    BMW 5 Series - Tech Talk For All Gen Of 5 Series
    Hi evryone,got in my car today and after 20 mins and engine up to temp noticed that heater was blowing cold with temp set at 26 degrees,then it went hot again for 5 min then cold and so on and so on,does anybody have any clues as to what would be causing this as i'v had no problems before.Many...
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