Temp gauge promlems

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  • aaron_tupper
    Advanced Member
    • Oct 2013
    • 134

    #1

    Temp gauge promlems

    Why is it that in the winter my gauge only stays at the top of the blue mark and in the summer the gauge is a little under the middle temp mark? is a 91 318i with a m20 swapped in
  • Tom.
    Advanced Member
    • Sep 2012
    • 121

    #2
    You might have a 71 degree thermostat rather than the stock 80 degree.

    Comment

    • jlevie
      R3V OG
      • Nov 2006
      • 13530

      #3
      That sound like a bad thermostat.
      The car makes it possible, but the driver makes it happen.
      Jim Levie, Huntsville, AL

      Comment

      • aaron_tupper
        Advanced Member
        • Oct 2013
        • 134

        #4
        Originally posted by jlevie
        That sound like a bad thermostat.
        Is there any other signs of a bad thermostat

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