What do you think is up with this?

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  • E30SPDFRK
    Moderator
    • Jul 2007
    • 5687

    #16
    Sweet, thanks. My alternator is from an e28 if that matters.
    Byron
    Leichtbau

    Comment

    • E30SPDFRK
      Moderator
      • Jul 2007
      • 5687

      #17
      Were you able to get the pic?
      Byron
      Leichtbau

      Comment

      • euroshark
        No R3VLimiter
        • Apr 2006
        • 3491

        #18
        One is power from the starter I believe, and the other is the B+ or D+ or whatever it's called.

        '88 528e /// '88 M5 /// '89 951 /// '98 E430 /// '02 M5

        Comment

        • E30SPDFRK
          Moderator
          • Jul 2007
          • 5687

          #19
          Where does that little blue one end up?
          Byron
          Leichtbau

          Comment

          • Doughnut
            E30 Modder
            • Oct 2007
            • 869

            #20
            Originally posted by E30SPDFRK
            Where does that little blue one end up?
            That is the alternator excite wire, it remains blue all the way up to the c101, (battery light on the gauge cluster) just wire to the blue wire on your chassis harness.

            the other thick red wire goes to battery however it is easier to run it directly to the back of the starter.
            ///Monstrosity. (OO≡≡[][]≡≡OO)

            Aside from showing yourself to be offensive, lacking experience and ignorant in the ways of business, you're also illiterate and imprudent. Beyond that, your sense of liability is severely impaired.

            Comment

            • E30SPDFRK
              Moderator
              • Jul 2007
              • 5687

              #21
              So it does nothing for charging?
              Byron
              Leichtbau

              Comment

              • euroshark
                No R3VLimiter
                • Apr 2006
                • 3491

                #22
                Actually, the dash bulb completes the circuit, so if it's out or that blue wire isn't connected, it won't be doing any charging.
                '88 528e /// '88 M5 /// '89 951 /// '98 E430 /// '02 M5

                Comment

                • E30SPDFRK
                  Moderator
                  • Jul 2007
                  • 5687

                  #23
                  oh, looks like I should hook that up then, lol.
                  Byron
                  Leichtbau

                  Comment

                  • Doughnut
                    E30 Modder
                    • Oct 2007
                    • 869

                    #24
                    Originally posted by E30SPDFRK
                    oh, looks like I should hook that up then, lol.
                    The motor will run without it but the battery wont charge, thats all.
                    ///Monstrosity. (OO≡≡[][]≡≡OO)

                    Aside from showing yourself to be offensive, lacking experience and ignorant in the ways of business, you're also illiterate and imprudent. Beyond that, your sense of liability is severely impaired.

                    Comment

                    • george graves
                      I waste 90% of my day here and all I got was this stupid title
                      • Oct 2003
                      • 19986

                      #25
                      ^good info - thanks
                      Originally posted by Matt-B
                      hey does anyone know anyone who gets upset and makes electronics?

                      Comment

                      • E30SPDFRK
                        Moderator
                        • Jul 2007
                        • 5687

                        #26
                        Now this is starting to get annoying.

                        Last time I had the car running was when the battery died. I put it on charge overnight and Mike came over the next day and we welded the exhaust on. When we went to start it, it wouldn't start at all.

                        What now? All that had changed was the battery had died and we put the exhaust on. Still getting spark, still getting fuel to the rail.

                        New injectors are in the mail.
                        Byron
                        Leichtbau

                        Comment

                        • E30SPDFRK
                          Moderator
                          • Jul 2007
                          • 5687

                          #27
                          Any ideas? I want to get this thing driving soon.
                          Byron
                          Leichtbau

                          Comment

                          • euroshark
                            No R3VLimiter
                            • Apr 2006
                            • 3491

                            #28
                            Wait and see if the injectors help. As you determined earlier, one or more might not be firing correctly, so once the new ones are in I think you might see an improvement.
                            '88 528e /// '88 M5 /// '89 951 /// '98 E430 /// '02 M5

                            Comment

                            • Doughnut
                              E30 Modder
                              • Oct 2007
                              • 869

                              #29
                              Originally posted by E30SPDFRK
                              Any ideas? I want to get this thing driving soon.
                              Ok, I completely understand your frustration.

                              When you went to start it straight after putting the charged battery back in did it even turn over? Or did it turn over but not start?

                              Go back to the wiring at your c101, check the wiring is still connected and all the wires that need power have power and all your earth wires are earthed.

                              Check this stuff for my sake then post back here when your done.
                              ///Monstrosity. (OO≡≡[][]≡≡OO)

                              Aside from showing yourself to be offensive, lacking experience and ignorant in the ways of business, you're also illiterate and imprudent. Beyond that, your sense of liability is severely impaired.

                              Comment

                              • E30SPDFRK
                                Moderator
                                • Jul 2007
                                • 5687

                                #30
                                Starter turns the engine, it just doesn't start. The engine will kind of fire on one cylinder just enough to push the starter back in, then it wont stay running. I really don't know what it could be.

                                It is my e exhaust though- single 2.25. Would too much backpressure prevent it from running? You can feel the exhaust pulses come out the back fairly easily, so its not plugged up.
                                Byron
                                Leichtbau

                                Comment

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