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Thread: Wiper operation questions

  1. #1
    Join Date
    Jun 2023
    Location
    Ashland, OR
    Posts
    11
    My Cars
    1984 633 CSi

    Wiper operation questions

    Hi all -
    Working on my 1984 633CSi. The wipers work fine until I turn them off. They stop immediately (anywhere), then slowly creep to the "Park" position. Anybody seen this? I can think of a few causes: the on/off lever, the wiper control unit, or is there a Park position sensor in the wiper motor? Any ideas welcomed! I'm trying to avoid paying $300 or so for a new control unit.....

    Also, a question: I see that my car has 2 windshield washer tanks and pumps, spray thru the same nozzles,operated by 2 different switches! WTF? Why would this be needed? Different glass cleaners??

    TIA
    OreGeo

  2. #2
    Join Date
    Aug 2010
    Location
    West Nyack, New York
    Posts
    1,397
    My Cars
    86 635csi 98 740i 96 MB
    To the second question, the black reservoir in the cowl is for a solvent that
    was available from BMW in the old days for intense cleaning like for bugs and stuff.

    For the first question I don't even have a suggestion.

    Bob V
    Last edited by 1986series6; 01-22-2024 at 06:25 AM.

  3. #3
    Join Date
    Jun 2023
    Location
    Ashland, OR
    Posts
    11
    My Cars
    1984 633 CSi
    Quote Originally Posted by 1986series6 View Post
    To the second question, the black reservoir in the cowl is for a solvent that
    was available from BMW in the old days for intense cleaning like for bugs and stuff.

    For the first question I don't even have a suggestion.

    Bob V
    Aha! That answers that question! Thanks Bob V!
    Now, to solve the "Wipers not Parking" question - any ideas y'all?

    TIA
    OreGeo

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