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    cluster coolant temp sensor

    Hey, just looking at what coolant temp sensors i not really sure which ones to switch. I know that i have to use the one from the m20. Does anyone have pictures that i can base mine off of? or just help me figure out what to do. Thanks

    #2
    You will end up having 2 sensors. The stock m50 one and the m20 one.

    The m20 one is brown.
    87 OBDII 328is

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      #3
      right, so which m50 one do i pull out to replace with the m20 one?

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        #4
        also will the m20 sensor plug right into the m50 plug?

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          #5
          Yeah, the m20 sensor plugs right into the e36 harness.

          I put my brown sensor first (toward the front of the block) and the e36 sensor just to the right of it, but in reality it doesn't matter which goes where, all they are is coolant temp sensors sensing coolant from the same place.

          WTB: early e30 sedan front doors

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            #6
            ^ thanks!

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              #7
              The sensor towards the front of the cylinder head on your car should be retained. The one to the right of it (between the first sensor and the throttle body heater line) should be replaced with the M20 single-pole brown sensor. That would be the proper way to do it because that is how the harness hooks up in the M50.

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                #8
                Originally posted by rthor432 View Post
                the sensor towards the front of the cylinder head on your car should be retained. The one to the right of it (between the first sensor and the throttle body heater line) should be replaced with the m20 single-pole brown sensor. That would be the proper way to do it because that is how the harness hooks up in the m50.
                +1

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                  #9
                  I'm trying to figure this one out also... so I take my E30 sensor and put it into number 8:




                  ? also is simply a deal where I have to replace the existing sensor there with my E30 one and plug the same wire back in and all should work fine?
                  Last edited by th3blue; 06-09-2009, 08:36 AM.
                  1997 BMW 328ic 5spd sport Moreagrun Metallic
                  1989 BMW 325is 5spd with a M50 swap
                  2006 Audi A3 6spd DSG sport with APR stg 2

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                    #10
                    No....ideally in the location of #6 (middle) because that is the way the harness is as rThor432 said....
                    Leave now before I shed my human form and kill you

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                      #11
                      Originally posted by RedTRex View Post
                      No....ideally in the location of #6 (middle) because that is the way the harness is as rThor432 said....
                      yes, this
                      ______________________
                      ex-Chief Operating Officer
                      Blunt Tech Industries
                      West Coast and Pacific Rim

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