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Thread: strange Trans fail issue

  1. #26
    Join Date
    Mar 2020
    Location
    Le Mans, France
    Posts
    133
    My Cars
    1991 850i individual
    @ctuls Thanks for the information.

    But i decided to buy an used ZF4HP24, i found one for 1000€ with 143 000 Km (~90000 miles),

    Thanks
    1991 850i automatic (Servotronic - EDC - ASC-T - AHK - Alpina rims)

  2. #27
    Join Date
    Sep 2022
    Location
    San Francisco, CA, USA
    Posts
    111
    My Cars
    1991 850, 06 Z4
    Glad you found another option.

    Few recommendations if you choose to take it:

    1. Replace the following seals 24311422671, 24111218009, 23221201330, 24147571213, 17211742636 (Quantity 2), and transmission filter
    2. Flush the transmission lines and cooler with a transmission flush, e.g. https://lubegard.com/products/kk/
    3. Drop the valve body and clean the screen for the pressure control solenoid

    I did the first two and wish I had done the 3rd.

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