Aux fan question

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  • Jim Lepage
    E30 Enthusiast
    • Jul 2008
    • 1138
    #1

    Aux fan question

    My aux fan runs well when my car is not running but when it's running my fan rattle and shake like crazy.

    What can be causing that ? Bad resistor ?
    E30S54 - Scale Suspension / Unix Performance Coilovers - 17x8 and 17x9 BBS E50
    Tags: None
    • jlevie
      R3V OG
      • Nov 2006
      • 13530
      #2
      Loose mounting or bad bearings would be the first things I'd check for.
      The car makes it possible, but the driver makes it happen.
      Jim Levie, Huntsville, AL

        Comment

        • Jim Lepage
          E30 Enthusiast
          • Jul 2008
          • 1138
          #3
          Originally posted by jlevie
          Loose mounting or bad bearings would be the first things I'd check for.
          It runs like a new when the car isn't running.
          E30S54 - Scale Suspension / Unix Performance Coilovers - 17x8 and 17x9 BBS E50

            Comment

            • george graves
              I waste 90% of my day here and all I got was this stupid title
              • Oct 2003
              • 19986
              #4
              Just thinking out loud.....Jiggle the wiring when the car isn't running - maybe the vibration is exposing a bad connection?
              Originally posted by Matt-B
              hey does anyone know anyone who gets upset and makes electronics?

                Comment

                • Jim Lepage
                  E30 Enthusiast
                  • Jul 2008
                  • 1138
                  #5
                  Originally posted by george graves
                  Just thinking out loud.....Jiggle the wiring when the car isn't running - maybe the vibration is exposing a bad connection?
                  I'm gonna try it but 2 fans in a row do the same behavior.
                  E30S54 - Scale Suspension / Unix Performance Coilovers - 17x8 and 17x9 BBS E50

                    Comment

                    • dnguyen1963
                      R3VLimited
                      • Nov 2011
                      • 2648
                      #6
                      Check your engine mounts. Is the engine shaking when it is running?

                        Comment

                        • Jim Lepage
                          E30 Enthusiast
                          • Jul 2008
                          • 1138
                          #7
                          Originally posted by dnguyen1963
                          Check your engine mounts. Is the engine shaking when it is running?
                          A little bit, I have AKG alu solid mounts.
                          E30S54 - Scale Suspension / Unix Performance Coilovers - 17x8 and 17x9 BBS E50

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