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Tach not working on M90 swapped e30??

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    Tach not working on M90 swapped e30??

    Hey guys,

    So this past weekend I purchased a 84' 325e with a euro M90b35 swap. The car runs pretty solid and am enjoying the huge power upgrade!

    But like my title states, my tachometer does not work? Neither does my mpg gauge? Can anyone point me in the right direction? I am unfamiliar with the M90.

    Any help would be greatly appreciated!!
    -Brad, AlphaTeam Motorwerks, LLC
    02' ///M Coupe 'Clownshoe'- TiAg/Black & Estoril- SOLD
    12' E70 X5 Diesel - Daily Driver
    19' Harley Davidson FXBB Street Bob


    Leave me Feedback!
    http://www.r3vlimited.com/board/showthread.php?t=223522

    Originally posted by IronJoe
    Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.
    Originally posted by 2mAn
    Brads a standup guy even though he likes buttsex

    #2
    Different coding plug on the cluster.

    Comment


      #3
      Can you elaborate on that more for me please? Which coding plug would I have to source?
      -Brad, AlphaTeam Motorwerks, LLC
      02' ///M Coupe 'Clownshoe'- TiAg/Black & Estoril- SOLD
      12' E70 X5 Diesel - Daily Driver
      19' Harley Davidson FXBB Street Bob


      Leave me Feedback!
      http://www.r3vlimited.com/board/showthread.php?t=223522

      Originally posted by IronJoe
      Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.
      Originally posted by 2mAn
      Brads a standup guy even though he likes buttsex

      Comment


        #4
        you may have a different gauge cluster all together (without the coding plug). Is there a wire harness adapter?

        Have you checked all your fuses?

        Comment


          #5
          I haven't torn into the cluster just yet. I just bought the car, so I'm still familiarizing myself
          With the beast
          -Brad, AlphaTeam Motorwerks, LLC
          02' ///M Coupe 'Clownshoe'- TiAg/Black & Estoril- SOLD
          12' E70 X5 Diesel - Daily Driver
          19' Harley Davidson FXBB Street Bob


          Leave me Feedback!
          http://www.r3vlimited.com/board/showthread.php?t=223522

          Originally posted by IronJoe
          Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.
          Originally posted by 2mAn
          Brads a standup guy even though he likes buttsex

          Comment


            #6
            Any one else have any ideas?
            -Brad, AlphaTeam Motorwerks, LLC
            02' ///M Coupe 'Clownshoe'- TiAg/Black & Estoril- SOLD
            12' E70 X5 Diesel - Daily Driver
            19' Harley Davidson FXBB Street Bob


            Leave me Feedback!
            http://www.r3vlimited.com/board/showthread.php?t=223522

            Originally posted by IronJoe
            Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.
            Originally posted by 2mAn
            Brads a standup guy even though he likes buttsex

            Comment


              #7
              I'm not sure what the wiring is like on the M90 but on my B34 the tach signal is part of the C103 harness not the C101 so it would be easy for someone to overlook. This isn't a great picture but this is what my C103 looks like. The tach signal should be a solid green wire.



              The coding plug fixes an issue where the tachometer is working but not accurate. I actually managed to change the coding plug on my car without removing the cluster. Just takes some finesse.

              Hope that helps.
              $500, Diamantschwarz, and a Dream

              Comment


                #8
                Originally posted by spiDmang View Post
                ...My tachometer does not work? Neither does my mpg gauge?
                What kind of mileage would an E30 get with am M90B35?
                It's lighter than the 635C Si, but obviously for the horsepower it's going to suffer in economy. It sounds interesting... I'm looking for a BMW 3 series or a "New Class" BMW in my area. Trying to balance economy and fun/performance, so I'm just gathering info and looking at ads.

                Comment


                  #9
                  if it gets 18mpg i'd be surprised.
                  AWD > RWD

                  Comment


                    #10
                    Originally posted by Kershaw View Post
                    if it gets 18mpg i'd be surprised.
                    Bummer.
                    It sounds like a fun car, but mileage is one reason I had to rule out
                    a Mk 3 Toyota Supra. My accountant wants decent MPG for my next car

                    Comment


                      #11
                      Originally posted by Kershaw View Post
                      if it gets 18mpg i'd be surprised.
                      This.

                      That car got 15mpg on average. Maybe less lol
                      -Brad, AlphaTeam Motorwerks, LLC
                      02' ///M Coupe 'Clownshoe'- TiAg/Black & Estoril- SOLD
                      12' E70 X5 Diesel - Daily Driver
                      19' Harley Davidson FXBB Street Bob


                      Leave me Feedback!
                      http://www.r3vlimited.com/board/showthread.php?t=223522

                      Originally posted by IronJoe
                      Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.
                      Originally posted by 2mAn
                      Brads a standup guy even though he likes buttsex

                      Comment


                        #12
                        Did you sell it? (just curious)

                        Comment

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