A/C fan blows while car is off!

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  • motorsports_3
    E30 Enthusiast
    • Mar 2007
    • 1058
    #1

    A/C fan blows while car is off!

    My A/C system operates if the car is on or off. I could go outside right now and turn the fan switch and/or snowflake button and the fan would work and the button would light up, without the key in the ignition. I dont want to forget one day and drain the battery, does anyone have an idea what may be causing this?

    I have an 88 325 with an M50TU swap, JIC.
    Tags: None
    • bmwguy325is
      E30 Fanatic
      • May 2011
      • 1263
      #2
      Im guess the compressor clutch locked up.
      sigpic"If one does not fail at times, then one has not challenged himself." -Ferdinand Porsche
      The ugly car: http://www.r3vlimited.com/board/showthread.php?t=209713

        Comment

        • pandaboo911
          R3VLimited
          • May 2010
          • 2070
          #3
          Someone prolly spliced some wires wrong on c101?

            Comment

            • motorsports_3
              E30 Enthusiast
              • Mar 2007
              • 1058
              #4
              I did the wiring. I thought that as well, but it didnt do it directly after the swap. It happened more recently.

              If the compressor clutch locked up, why would that power the fan as well?

                Comment

                • u3b3rg33k
                  R3VLimited
                  • Jan 2010
                  • 2452
                  #5
                  Originally posted by bmwguy325is
                  Im guess the compressor clutch locked up.
                  what?

                  Ich gehöre nicht zur Baader-Meinhof Gruppe
                  Originally posted by Top Gear
                  Just imagine waking up and remembering you're Mexican.

                  Every time you buy a car with DSC/ESC, Jesus kills a baby seal. With a kitten.

                    Comment

                    • motorsports_3
                      E30 Enthusiast
                      • Mar 2007
                      • 1058
                      #6
                      Bump, any ideas, maybe a stuck relay?

                      I looked at the wiring diagrams and none have mention of the A/C system?

                        Comment

                        • motorsports_3
                          E30 Enthusiast
                          • Mar 2007
                          • 1058
                          #7
                          No one?

                            Comment

                            • u3b3rg33k
                              R3VLimited
                              • Jan 2010
                              • 2452
                              #8
                              I'd definitely consider a stuck relay. Pull out your Bentley and see "what's up with that".

                              Ich gehöre nicht zur Baader-Meinhof Gruppe
                              Originally posted by Top Gear
                              Just imagine waking up and remembering you're Mexican.

                              Every time you buy a car with DSC/ESC, Jesus kills a baby seal. With a kitten.

                                Comment

                                • motorsports_3
                                  E30 Enthusiast
                                  • Mar 2007
                                  • 1058
                                  #9
                                  It was a stuck relay. Thank for the help guys

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