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auto transmission

Discussion in 'E24 (1977-1989)' started by john saxelby, Jun 9, 2008.

    john saxelby guest

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    my 1967 635 auto transmission ocassionaly downshifts from the 4th speed. any suggestions?

    markiehd guest

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    my 85 does it errrr, check connections, tps, afm, clean fluid. ive dont all that and still cant find the issue. i believe it is electrical in nature.

    ambo72 guest

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    My mechanic replaced the cam position sensor on my 1983 Euro-spec 635csi and fixed the downshift issue.
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    John in VA

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    Make sure you have ENOUGH clean tranny fluid. You might also check the electrical connector on the transmission. Mine had a bit of corrosion and the tranny went into the default mode, preventing the shift into 4th gear.
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    • Technical Service Advisor


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    I doubt that. There is no cam position sensor on an 83 635csi in any market.

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