No heat

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  • Zinno_e30
    E30 Addict
    • Jul 2010
    • 553

    #1

    No heat

    The fan does not work in any position (1-4), regardless if it is on heat/AC. I am assuming it is the blower motor - is this the culprit?
    Last edited by Zinno_e30; 12-19-2011, 01:43 PM.
  • Ceeker
    R3VLimited
    • Sep 2009
    • 2821

    #2
    blower fan resistor -responsible for fan speed located below the blower motor. slip your hand under the motor and pull up-slides out. install new one about 20-30 bucks - make sure it is a 4 speed resistor and not a 3.
    sigpic

    Comment

    • Zinno_e30
      E30 Addict
      • Jul 2010
      • 553

      #3
      I've read that the resistor is the fix only if the fan works in position 4, however, my fan does not work in any position. Is it still the resistor?

      Comment

      • Wh33lhop
        R3V OG
        • Feb 2009
        • 11705

        #4
        Originally posted by Ceeker
        blower fan resistor -responsible for fan speed located below the blower motor. slip your hand under the motor and pull up-slides out. install new one about 20-30 bucks - make sure it is a 4 speed resistor and not a 3.
        A dead resistor will still allow the fan to operate at full speed since that is just a short to power.

        I am curious, are your AC/recirc buttons lighting up or are they dead too? Have you checked the fuse?
        paint sucks

        Comment

        • jlevie
          R3V OG
          • Nov 2006
          • 13530

          #5
          Since the fan doesn't work at any speed, it won't be the resistor. A blown fuse, bad fan switch, bad unloader relay, or burned out fan motor are what you should be looking for.
          The car makes it possible, but the driver makes it happen.
          Jim Levie, Huntsville, AL

          Comment

          • Zinno_e30
            E30 Addict
            • Jul 2010
            • 553

            #6
            Originally posted by Wh33lhop
            I am curious, are your AC/recirc buttons lighting up or are they dead too? Have you checked the fuse?
            Originally posted by jlevie
            Since the fan doesn't work at any speed, it won't be the resistor. A blown fuse, bad fan switch, bad unloader relay, or burned out fan motor are what you should be looking for.
            It was a bad fuse - I appreciate the help! I ended up replacing several other fuses and got my interior lights working again :)

            The heat finally works, however the fan makes a loud noise in positions 3 and 4 - could it be the blower fan?

            Comment

            • b*saint
              No R3VLimiter
              • May 2006
              • 3794

              #7
              Mine was like this. I took it out, cleaned the brushes, sprayed the bitch out with brake cleaner, reassembled, replaced the 30A fuse and its been working fine.
              Ma che cazzo state dicendo? :|

              Comment

              • StereoInstaller1
                GAS
                • Jul 2004
                • 22679

                #8
                Originally posted by wnamane
                It was a bad fuse - I appreciate the help! I ended up replacing several other fuses and got my interior lights working again :)

                The heat finally works, however the fan makes a loud noise in positions 3 and 4 - could it be the blower fan?
                Yes, it is bad. The extra stress of bad bearings or just filth in the bushings is why the fuse blew.

                Thus:
                Originally posted by b*saint
                Mine was like this. I took it out, cleaned the brushes, sprayed the bitch out with brake cleaner, reassembled, replaced the 30A fuse and its been working fine.
                maybe do a little lubrication with a drop or two of sewing machine oil too.

                Closing SOON!
                "LAST CHANCE FOR G.A.S." DEAL IS ON NOW

                Luke AT germanaudiospecialties DOT com or text 425-761-6450, or for quickest answers, call me at the shop 360-669-0398

                Thanks for 10 years of fun!

                Comment

                • b*saint
                  No R3VLimiter
                  • May 2006
                  • 3794

                  #9
                  I thought of that but I didn't want to use anything conductive near the brushes.
                  Ma che cazzo state dicendo? :|

                  Comment

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