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Thread: Mitch500’s s54 swap into 97 e36 m3

  1. #76
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    Quote Originally Posted by brokeazz View Post
    Yes, connect that too. It’s from your alternator, that’s how it’s gonna charge your battery. It goes like this, Red wire from the black box to starter, then use your stock red 4 gauge from starter to the B post
    Got it! Thanks man


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  2. #77
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    Yup, alt to starter Through the harness is correct you don’t need to mess with that one. And yes the wire from the fuse box will hook around the block B+ terminal. You have it correct now

  3. #78
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    Quote Originally Posted by PITT M3 RR View Post
    Yup, alt to starter Through the harness is correct you don’t need to mess with that one. And yes the wire from the fuse box will hook around the block B+ terminal. You have it correct now
    I pulled the big wire out of my e36 m3 harness last night. I notice it has 2 wires on one end spliced into 1 that connects to the b+ block?

    Is that ok? Or do they have to be seperate?

    My e36 goes like this: smaller gauge wire on fuse box, thick gauge wire from starter, then those merge together and turn into 1 wire that went to the b+ box. (E36 s52 wiring)



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  4. #79
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    The little spare wire can be taped off. (Or used as a hot at all times source for a relay or something you as later)

    Heres how how you want it.

    From B+ to fuse box is 1 lone wire. From B+ to starter is 1 lone wire and from alternator to starter is one lone wire.

  5. #80
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    Quote Originally Posted by PITT M3 RR View Post
    The little spare wire can be taped off. (Or used as a hot at all times source for a relay or something you as later)

    Heres how how you want it.

    From B+ to fuse box is 1 lone wire. From B+ to starter is 1 lone wire and from alternator to starter is one lone wire.
    I took a picture of the e36 wire I removed from the s52 harness. You mentioned I need 2 solo wires, is there any reason why I can't use this wire? It has both fuse box and starter to b+ box?
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  6. #81
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    That’s wierd, mine were separate lines. U got it mixed up, the big 4gauge goes to starter. Looks like someone heat shrinked the wire together
    Last edited by brokeazz; 12-15-2017 at 10:01 PM.

  7. #82
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    i think thats why im so confused. everyone mentioned two separate wires, and mine came out like this. And yes i labelled them wrong in the photo, fat wire was on the starter and thinner one to fuse box....

    so is it safe to wire it like this a 2wire into 1 wire to B+ box?
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  8. #83
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    also hows everyone routing the electronic pedal wire? any hidden passages or do i have to make the original hole bigger to fit the connector through?
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  9. #84
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    Me personally I wouldn’t do it. BMW designed it that way so I say keep them separate. You can get the wire from a junkyard pretty cheap.

    - - - Updated - - -

    I’ve read some people have de-pinned the wire from the connector and run it through the hole from the old throttle cable opening, get a 4guage grommet, it fits perfectly

  10. #85
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    Ok so little update. I tried to start it up today and got a no start, just cranks all day and not even a pop.

    Fuel pump is priming and I smell fuel through the throttle bodies when I open them manually.

    I'm thinking it's EWS related, so I emailed Andrew since I bought the harness and markert tune through him. Hopefully I hear back from him.

    Or something came disconnected in the DME compartmen, I'll open it up and make sure everything is connected tight.


    Does anyone have a diagnostic advice for me?

    Here's a video.


    https://youtu.be/ikv3rLx961E
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  11. #86
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    Ok so I spoke with Andrew and he said he loaded the bianary from my ecu and it shows EWS disabled. So I can check that off the list.
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  12. #87
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    You have everything wired in correctly? Is your coil pack harness securely set, plugged in and grounded to the head?

  13. #88
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    Quote Originally Posted by PITT M3 RR View Post
    You have everything wired in correctly? Is your coil pack harness securely set, plugged in and grounded to the head?
    I'm going to have a look after work today and see what I can find. I'll keep you posted.
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  14. #89
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    Quote Originally Posted by mitch500 View Post
    Does anyone have a diagnostic advice for me?
    Do you have INPA? First thing I'd do is check codes.

  15. #90
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    Good point and Andrew is distributing markert tunes now?

  16. #91
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    Quote Originally Posted by gpeterson View Post
    Do you have INPA? First thing I'd do is check codes.
    No I don't have inpa. Just a blue driver Bluetooth scanner that I couldn't get to connect last night.
    Quote Originally Posted by PITT M3 RR View Post
    Good point and Andrew is distributing markert tunes now?
    Yes he is.
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  17. #92
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    Cool send me your email I’ll get you inpa

  18. #93
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    Do you have a new or old crank position sensor? What about the harness, check the main harness relay
    98 Estoril ///M3 4/6
    S54 swap CSL

  19. #94
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    Just FYI: Both Pitt and myself have experienced trying to start with EWS enabled when it should have been disabled. Both of us had an engine that would immediately try to start, and then immediately stall. So I think it is safe to rule out EWS as the issue 100%.

    If you're getting fuel but no spark then I'd look at:
    • crank/cam position sensors as the coils aren't firing
    • a wire issue between those sensors and the ECU
    • possibly you do not have power and grounds distributed to the ECU correctly, or the coils
    • Also, I know it's obvious but the main ground cable between body and engine

  20. #95
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    Quote Originally Posted by TH3 Shifty View Post
    Do you have a new or old crank position sensor? What about the harness, check the main harness relay
    Old crank sensor. What color is the main relay and how would I check it?

    Quote Originally Posted by M52 POWER! View Post
    Just FYI: Both Pitt and myself have experienced trying to start with EWS enabled when it should have been disabled. Both of us had an engine that would immediately try to start, and then immediately stall. So I think it is safe to rule out EWS as the issue 100%.

    If you're getting fuel but no spark then I'd look at:
    • crank/cam position sensors as the coils aren't firing
    • a wire issue between those sensors and the ECU
    • possibly you do not have power and grounds distributed to the ECU correctly, or the coils
    • Also, I know it's obvious but the main ground cable between body and engine
    I'll check and report back tonight


    Quote Originally Posted by PITT M3 RR View Post
    Cool send me your email I’ll get you inpa
    Pmed
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  21. #96
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    Quote Originally Posted by mitch500 View Post
    Old crank sensor. What color is the main relay and how would I check it?



    I'll check and report back tonight




    Pmed
    Main relay is the blue one. This is why I like having them out of the cubby hole. When you need to check and test, its a pain in the ass. Sending INPA now

  22. #97
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    Here is the cable INPA / DME CABLE
    You can use the OBDII port for this. If you want to access body side module, then you use the round diagnostic plug. You can, however, access the DME at the diagnostic plug as well.

    As for the INPA install, follow the direction and email me if youre having trouble connecting. We may have to edit your COM ports. NBD though.

  23. #98
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    Can I have that too?

    David-fisher@live.com I have the cables already and a windows XP laptop
    98 Estoril ///M3 4/6
    S54 swap CSL

  24. #99
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    Quote Originally Posted by TH3 Shifty View Post
    Can I have that too?

    David-fisher@live.com I have the cables already and a windows XP laptop
    sent

  25. #100
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    Quote Originally Posted by PITT M3 RR View Post
    Here is the cable INPA / DME CABLE
    You can use the OBDII port for this. If you want to access body side module, then you use the round diagnostic plug. You can, however, access the DME at the diagnostic plug as well.

    As for the INPA install, follow the direction and email me if youre having trouble connecting. We may have to edit your COM ports. NBD though.
    The eBay link says you need windows 7, 8 or 10. Does it also work with windows XP?
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