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Thread: Problem with s52 swap in 90 525

  1. #1
    Join Date
    May 2017
    Location
    Austin Tx
    Posts
    131
    My Cars
    e34 525, s52 1993skyline

    Problem with s52 swap in 90 525

    So I swapped an s52 into a e34 525i but after everything was hooked up it will crank but not fire fuel pump wont turn in and no spark or signal to the crank angle sensor. Ive also switched it to obd 1 with intake kit and red label 413. could this be an ews problem? btw this car came with the m20 motor and no ews in it at all. so its closer to swapping an s52 into an e30.
    Last edited by Tristan36; 10-20-2017 at 01:08 PM.

  2. #2
    Join Date
    Dec 2011
    Location
    Southfield
    Posts
    31
    My Cars
    323i
    Check the 3 main relays for the harness, EWS should not be a problem with a 413 ECU.

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