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Thread: 1991 E34 M20 - 4HP22 won't work after some changes

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  1. #1
    Join Date
    Sep 2011
    Posts
    12

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    On these pictures you can see that I'm putting back the other connector for ABS and the whole ABS module. As you can see on the small white connector the wires are cut and they give the signal to the ECU of the transmission. ABS won't function but it may give the necessary data to the ECU of the transmission to make him work. Is this a possible solution? Any other suggestions?
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    Last edited by marko84; 09-04-2011 at 01:57 PM. Reason: update

  2. #2
    Join Date
    Feb 2006
    Location
    Oldham, England
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    3,078

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    You dont say so, but what I think you have is a '93 535i auto shell into which you have transplanted a '91 M20 and 4HP22 auto box. On the '93, ASC talks to the EGS but from what I can see, on the 91 does not. You dont say it either but I understand your wiring loom socket has 8 pins whereas your transmission only has 7. I'd suggest you start with the EGS and wiring loom from the M20 donor. Even better would be to get them from a '91 M20 which had ABS/ASC though I do not know if such a beast existed Best of luck with it
    Last edited by whiskychaser; 09-04-2011 at 03:28 PM.
    Oct '00 E46 330i. Feb '92 525i (departed)

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