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Thread: 94 M42 crank no start

  1. #1
    Join Date
    Jul 2023
    Location
    Sydney, NSW, Australia
    Posts
    1
    My Cars
    1990 BMW 318i Sedan

    94 M42 crank no start

    Hi all,
    I'm in the process of swapping an 94 318is m42 into my 90 e30. I've wired everything up and am getting crank with no start (no fuel + no pump on crank and after key into on pos. and no spark). I'm 90% sure that the problem is a ews1 in the ecu. I've checked what i think is most of the other causes for this issue (cps, relays, grounds, x6000 plug etc.). Whats the best way to bypass this? btw I've tried removing the green wire pin 7. Also I have the red label ecu.
    Thanks

    - - - Updated - - -

    And also to add onto this I've found the problems is the the dme relay isn't being grounded by ecu. Tested continuity to x6000 and grounds on ecu are ok

  2. #2
    Join Date
    Sep 2007
    Location
    Regina, Sask, Canada
    Posts
    2,766
    My Cars
    82 320i 89 325i
    you might want to try the e36 forum. the m42 from the e36 is set up different to the e30. the swap is not very common in north america at all.

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