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1997 840ci transmission failed at 170k miles....

Discussion in 'E31 (1991-1997)' started by deashus, Sep 29, 2022.

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    I've owned my 8 since 2017 and have had many great miles of getting to experience this very cool car.
    I believe the engine has many more miles as does the chassie. The auto trans is a zf 5hp-24 paired to the m62 4.4l v8 may be prone to early failure though.
    I ordered a used replacement from Quality Used Transmissions (used them before with good result).
    Unfortunately, the 5hp-30 was discontinued for the 840 in 1996 replaced with the shorter 24.
    I will have the mechatronics module upgraded with the pressure control valve from Sonnex.
    Any body have anything to add that may help with improving the 24 prior to install?

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