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89' m30 into 84' 323i, engine wiring?

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    #1

    89' m30 into 84' 323i, engine wiring?

    Ok, So my old 323i hasn't got the conventional c101 plug that is coming with my m30b35, can anyone link me to a good resource that details this or explain what I need to do, I can take photo's of my current engine bay wiring If anyone likes.
    Also, m30 was connected to a auto, so it has the auto ecu and TPS. What do i do about this?
    TIA.
    ///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.

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    #2
    Ok, to try and help this along, This is my engine harness plug:


    Ignition module:


    And the wiring for my cold start injector valve:



    I'm thinking this wiring loom is not going to work with my m30b35 as it is an auto and has the latter style c101 engine plug and my car is a manual with the old style jetronic.
    ///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

      #3
      You need to start by finding out what engine management your 323 currently has. Most likely it has something from pre-motronic which is what the M30 you has in it.

      The only 323 I've seen in person I believe was running L-jetronic. My 78 633 and 79 635 were running these systems. I know to convert to motronic involves all new intake, TPS,.. lots of stuff.

      It can be done but it won't be plug and play at all.


      Have to love the E24... and the E30 of course.

      Comment

        #4
        The m30 Ive got is from a 89' e34 and has the newer round c101 plug, My e30 is L-jetronic (early 84' model) Is it just the engine loom and ecu that is jetronic? Or do i have to update the chassis harness?
        Can I just rewire my my c101 plug from the m30 to plug into my older style chassis harness?

        Thanks Justinian!
        ///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

          #5
          All you need to do is find pinouts for your 323i C101 plug. It is as easy as matching the wires on the B35 (your M30) engine harness C101 plug to your chassis C101 plug, though you will be doing some cutting and soldering. It doesn't matter if the chassis originally had an L-Jet motor in it, because the wires at the fuse box side of the C101 plug are mostly the same. You may end up with some unused wires on either the chassis or engine side when you are done... When I did my euro M30 (M90) swap into my '84 325e I think I only spliced about 8 or 10 wires, it's pretty simple.

          Check out www.m535i.org and go to their FAQs section, there is a great writeup about swapping a B35 into the earlier motronic cars, and I think a lot of that info will be relevant to your swap.

          Let me know if you have any more questions!
          '88 528e /// '88 M5 /// '89 951 /// '98 E430 /// '02 M5

          Comment

            #6
            Originally posted by euroshark View Post
            All you need to do is find pinouts for your 323i C101 plug. It is as easy as matching the wires on the B35 (your M30) engine harness C101 plug to your chassis C101 plug, though you will be doing some cutting and soldering. It doesn't matter if the chassis originally had an L-Jet motor in it, because the wires at the fuse box side of the C101 plug are mostly the same. You may end up with some unused wires on either the chassis or engine side when you are done... When I did my euro M30 (M90) swap into my '84 325e I think I only spliced about 8 or 10 wires, it's pretty simple.

            Check out www.m535i.org and go to their FAQs section, there is a great writeup about swapping a B35 into the earlier motronic cars, and I think a lot of that info will be relevant to your swap.

            Let me know if you have any more questions!
            Thanks for the info, but I can't seem to find any electrical tech info on my early style jetronic e30, not even a wiring diagram.
            Can I use my e34 auto wiring harness and auto TPS, just by splicing In the correct 8 or 10 wires needed?

            People are telling me I can't use my auto harness and tps, and some are telling me I can, lol I'm confused!

            Thanks everyone.
            ///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

              #7
              I dont think you can use the e34/e32 auto harness and e34/e32 auto TPS. You need a m30 manual harness or a 87 325i manual harness. You also need a manual m30 TPS or manual 325i TPS. From what ive gathered you need to find your cars wiring harness colors and the colors for what ever cars harness your going to be using. Cut and splice them and you should be ready to start her up? Am I right?



              This pic is from a 84' 318i L-jetronic car:

              84' 318i m30b35 swapped!

              Comment

                #8
                Originally posted by flawdaboi407 View Post
                I dont think you can use the e34/e32 auto harness and e34/e32 auto TPS. You need a m30 manual harness or a 87 325i manual harness. You also need a manual m30 TPS or manual 325i TPS.
                Can someone else say this sounds correct?

                Thanks heaps flawboi.
                ///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

                  #9
                  Bump,

                  Will a 1987 e30 325i manual engine harness and TPS work with my 1989 e34 auto m30? Will my auto ECU plug into that harness? Figuring out the auto harness is proving too difficult.

                  Cheers for any help!!
                  ///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

                    #10
                    why bother changing the harness?

                    wiring diagrams for L-jet are in the haynes 3&5 series manual.
                    Just a little project im working on
                    - http://www.lse30.com -

                    Comment

                      #11
                      Originally posted by Madhatter View Post
                      why bother changing the harness?

                      wiring diagrams for L-jet are in the haynes 3&5 series manual.
                      For the simple fact that my harness on the m30 right now is an auto one (with auto throttle position sensor) and will be to hard to get working with my e30?
                      I'm under the usumption that the auto m30 tps will not work with a manual setup.

                      Any ideas?
                      ///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

                        #12
                        no such thing as an automatic throttle position sensor, its the same on manual and auto's.
                        Just a little project im working on
                        - http://www.lse30.com -

                        Comment

                          #13
                          Originally posted by Madhatter View Post
                          no such thing as an automatic throttle position sensor, its the same on manual and auto's.
                          For E28's this looks to be true, however E30's and E34's use a different TPS for auto and manual.
                          1973 Bavaria

                          Comment

                            #14
                            Originally posted by Q-ship View Post
                            For E28's this looks to be true, however E30's and E34's use a different TPS for auto and manual.
                            And you would be wrong.

                            Just a moment...
                            http://www.realoem.com/bmw/partxref.do?part=13631708605&showus=on&showeur=on&series=E34
                            Just a little project im working on
                            - http://www.lse30.com -

                            Comment

                              #15
                              http://www.r3vlimited.com/board/showthread.php?t=115300
                              1973 Bavaria

                              Comment

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