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325e' w/ 'i' harness coolant temp switch question.

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    325e' w/ 'i' harness coolant temp switch question.

    Doing a harness swap on my 85 325e so i can run a Motronic 1.3 ECU. Can someone confirm for me that I can plug the 'i' harness into 'e' temp switches? From what I read it should be "plug and play" and when I do a resistance check from the ecu plug its all within spec. Just wanted to play it safe and get a second opinion. These are the switches I am referring to: http://i.imgur.com/VCkElbx.jpg and here are some close-ups: http://i.imgur.com/4G0R1jz.jpg , http://i.imgur.com/qzCssiu.jpg

    Thanks for looking.

    #2
    RealOEM.com is your friend. This thread should have all the information you need.

    The coolant temp sensor is the same. Yours looks old, I would replace it anyway. The gauge sender is not compatible with the 1.3 harness. The coolant temperature switch and thermo-time switch are not used by Motronic 1.3; you can leave them or you can buy threaded plugs (PN 07119919228 ) to replace them.
    Last edited by modernist; 11-01-2015, 10:06 PM. Reason: part number

    1986 327i
    transaction feedback
    DIY thing
    meh

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      #3
      Originally posted by modernist View Post
      RealOEM.com is your friend. This thread should have all the information you need.

      The coolant temp sensor is the same. Yours looks old, I would replace it anyway. The gauge sender is not compatible with the 1.3 harness. The coolant temperature switch and thermo-time switch are not used by Motronic 1.3; you can leave them or you can buy threaded plugs (PN 07119919228) to replace them.
      Ok thanks. In all my searching i'm not sure how I was not able to find that thread. I noticed that it lists belts as a required 'i' part. Both 'e' and 'i' belts are the exact same according to RealOEM. Just thought I'd point that out.

      Thanks for your help.

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