24v no start? What was it?

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  • e30shmobberr
    E30 Mastermind
    • Mar 2010
    • 1934

    #1

    24v no start? What was it?

    My s50e30 is making its way to a shop to be finished. Just thought a thread that had 24v swapped owners that had problems starting the car, listing the fix of the issue. anyone game?

    Patrick - IG:niicknac
    RIP 1987 BMW 325is - S50'd ZF 6-speed, flared, bagged
  • cmybimmer
    E30 Modder
    • Oct 2010
    • 894

    #2
    Good idear..

    Problem: Fuel pump wasn't priming.

    Solution: ECU wasn't grounded :hitler: (took me two weeks to figure that out :loco:)

    Comment

    • bimmerteck
      Mod Crazy
      • Mar 2009
      • 762

      #3
      So far I've seen a few worth mentioning

      EWS not deleted on later motors

      Failed "New" Crank Position Sensor

      Female pins used on both sides of the x20


      Water Damage to the Donor DME

      Comment

      • BoostinEuros
        Grease Monkey
        • Feb 2010
        • 363

        #4
        The fusible link burned out.
        '91 "318is" slick top M50 turbo
        '97 Dodge 3500 12v Cummins
        '12 Mini Cooper S
        '89 318i Chump Car Project

        Comment

        • TimKninja
          R3VLimited
          • Mar 2009
          • 2131

          #5
          Fuel lines on backwards :/
          1985 325e M50TU(Sold)
          1991 318is Slicktop (Sold)
          1990 325is Brilliantrot S50/5 Lug Swapped.
          1992 525i Manual shitbox Winter Beater

          Comment

          • jeffmn8
            Wrencher
            • Jul 2010
            • 217

            #6
            Originally posted by TimKninja
            Fuel lines on backwards :/
            This.

            And engine ground not bolted on...
            Midwest Spec E30 #64

            https://www.facebook.com/thestickergarage

            Comment

            • 328ijunkie
              Forum Sponsor
              • May 2007
              • 3961

              #7
              the ECU does NOT need to be grounded.

              Check Us out on Facebook
              Needing a harness adapter or wiring help? Check it out: also have 24v motor mounts, E30 M3 covers and E36 ECU mounts!
              Full Product Line Tuning
              OBD2 Tuning Available! OBD2 E36, S54 Swap, S62 Swap, etc: tuning@MarkertMotorWorks.com Dyno Thread

              Comment

              • cmybimmer
                E30 Modder
                • Oct 2010
                • 894

                #8
                Originally posted by 328ijunkie
                the ECU does NOT need to be grounded.
                My car says otherwise :crazy:

                Comment

                • 328ijunkie
                  Forum Sponsor
                  • May 2007
                  • 3961

                  #9
                  Then the main ground for your harness is crap and you're entire harness is grounding itself through your ecu right now.

                  Check Us out on Facebook
                  Needing a harness adapter or wiring help? Check it out: also have 24v motor mounts, E30 M3 covers and E36 ECU mounts!
                  Full Product Line Tuning
                  OBD2 Tuning Available! OBD2 E36, S54 Swap, S62 Swap, etc: tuning@MarkertMotorWorks.com Dyno Thread

                  Comment

                  • cmybimmer
                    E30 Modder
                    • Oct 2010
                    • 894

                    #10
                    Oh ok..

                    Problem: main ground for wiring harness is crap.

                    Solution: ground the ecu

                    Comment

                    • Den_k321
                      E30 Fanatic
                      • Oct 2010
                      • 1248

                      #11
                      dead batterie =]

                      solution: jump started

                      1988 325is S50 in-progress.
                      http://www.facebook.com/E30LocalCrew
                      Few pictures:
                      http://www.r3vlimited.com/board/showthread.php?t=255061

                      Comment

                      • gp.plus
                        E30 Addict
                        • Mar 2010
                        • 416

                        #12
                        Originally posted by cmybimmer
                        Oh ok..

                        Problem: main ground for wiring harness is crap.

                        Solution: fix main ground for harness
                        FIXED

                        another cps related no start for me.

                        Comment

                        • greyis89
                          Wrencher
                          • Jun 2009
                          • 230

                          #13
                          Fuse box not hooked up to 12v power. Fried the oil sensor on the pan. Thankfully that was all. Ran a new wire to it and made sure no other wires were cooked then was running fine.
                          sigpic

                          Comment

                          • samiam3356
                            E30 Mastermind
                            • Jul 2009
                            • 1901

                            #14
                            Originally posted by 328ijunkie
                            the ECU does NOT need to be grounded.
                            Its grounded on the shock tower. The case doesn't need to be grounded like everyone says. The ground that is by the strut IS the ground for the ECU.


                            1. CPS pluged into the Cam sensor. Opposite plugs on obd2 engines but they are the same on NV engines. On NV engines if you swap up those two sensors it can run but rough
                            2. PO had an aftermarket alarm
                            3. Vacuum leak on the goose neck under the manifold
                            4. fouled plugs
                            Last edited by samiam3356; 03-17-2012, 03:19 PM.

                            Originally posted by Roysneon
                            $5 shipped?
                            Originally posted by MarkD
                            You are a strange dude, I'n not answering any more posts from you.

                            Comment

                            • e30shmobberr
                              E30 Mastermind
                              • Mar 2010
                              • 1934

                              #15
                              Ill know what my issue is in about a week ha

                              Patrick - IG:niicknac
                              RIP 1987 BMW 325is - S50'd ZF 6-speed, flared, bagged

                              Comment

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