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Coolant Temperature Sensor - Is This Correct?

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    Coolant Temperature Sensor - Is This Correct?

    Hey guys,

    Im confused as to whether these sensors are in the correct position or swapped. I looked at RealOEM.com but I'm double guessing myself. This is an image taken from the passenger side towards the driver side engine bay. Is the blue one the CTS and the brown one the temperature gauge sensor?



    Thanks!
    Last edited by bcrdukes; 06-29-2009, 05:10 PM.
    1989 E30 BMW 325i
    1998 E36 BMW M3
    2004 E46 BMW 325i

    #2
    You are correct.

    Blue is for DME, brown for the gauge.
    The current fleet:
    1992 325ic: 148k-171k miles
    1999 Chevrolet Tahoe LT 4WD, 114k-142k miles
    1984 MasterCraft Stars and Stripes Powerslot (not a car :D) PCM Ford 351W, 904 hours

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      #3
      as long as you have brown/brown and blue/blue, you're good.
      Build thread

      Bimmerlabs

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        #4
        How do I check if they're corroded? How do you take these sensors off? I fear breaking the clip.
        1989 E30 BMW 325i
        1998 E36 BMW M3
        2004 E46 BMW 325i

        Comment


          #5
          press in the metal clip and the plug pulls right off. You'd have to try to break one.

          you can visually see if the plug is corroded. it should be a bright gold/silver color. if it's green/blue and nasty looking you'll know.
          Build thread

          Bimmerlabs

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            #6
            ^what he said

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              #7
              So...if the CTS is corroded, wouldn't that trigger a code within the DME? I did the stomp test - 1444, so it's clear.

              I'm only speculating at this point. I have yet to look at the CTS.
              1989 E30 BMW 325i
              1998 E36 BMW M3
              2004 E46 BMW 325i

              Comment


                #8
                The 2 sensors have a different thread size, so they can only go in one way.

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