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    M3 not starting

    New to this forum and thought I would ask for some ideas on the issue Im dealing with.
    M3 is not firing up, tried new CPS, new ECU, new temp sensor , grounds are fine, new coil and distributor, but it still doesnt fire. Fuel pumps turn on only when the relay is jumpered.

    Went back to work on it today and now I have lost spark and the ICV is not turning on.

    Any ideas?

    #2
    Check the code relay for the OBC.

    Did you open the old ecu to see if the icv transistor is cooked?
    Originally posted by codyep3
    I hope to Christ you have looks going for you, because you sure as fuck don't have any intelligence.
    2001 silver/Blk 325 cabby. SOLD
    1988 Blk/Blk e30 factory wide body kit car SOLD
    1992 DS/BLK 325 m-tech II apperance pack cabby SOLD!
    2002 325xit Sil/blk. SOLD
    2012 328i xdrive touring. Wht/blk. SOLD
    2009 135 cabby. monacoblue/blk leather SOLD
    2007 Z4m coupe. Silver grey/black/ aluminum. 1of50
    2010 F650gs twin
    2016 M235i cabby. Mineral grey/Red leather

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      #3
      Bypassed the OBC relay, reflowed all connections in ECU and nothing. All transistors looked fine.

      Comment


        #4
        Are you getting 12v at the coil? hook the multi-meter up to the terminals on the coil. if 0, ecu is not grounding coil.
        My feedback:
        http://www.r3vlimited.com/board/showthread.php?t=186328

        http://e30tech.com/forum/showthread.php?t=74911

        Instagram:
        @gears_n_glory

        @functionmotorsports

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          #5
          Im getting 12v at the coil, both terminals but have not checked for pulsing while cranking.

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            #6
            Your flywheel crank sensors might be toast.

            Comment


              #7
              Installed two new sets of sensors, unless Im that lucky that both sets were bad.

              Comment


                #8
                anything??
                88 M3 Lachsliber glass top, 90 IS project,

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