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Thread: Power windows issue...acts like it is not finished rolling up!!

  1. #1
    Join Date
    Aug 2002
    Location
    Rock Hill, SC
    Posts
    786

    Power windows issue...acts like it is not finished rolling up!!

    When I roll up my passenger side window in my 89 SC, whether it be up or down, when it gets all the way down or up, and if I continue to hold the switch, it will like act like it wants to keep going, making a thump, thump, thump sound when the motor keeps turning. Anyone experienced this?

  2. #2
    Join Date
    Oct 2010
    Location
    just north of Greenbay
    Posts
    14
    i have the same problem but my windows dont roll down at all just the thump noise

  3. #3
    Join Date
    Oct 2004
    Location
    Charlotte, NC
    Posts
    8,159
    The plastic plugs in the window motor that drive the regulator are worn out and need to be replaced....

    You will eventually get to the point where the window will not go up or down....

  4. #4
    Join Date
    Oct 2010
    Location
    just north of Greenbay
    Posts
    14
    how hard is it to replace

  5. #5
    Join Date
    Oct 2004
    Location
    Charlotte, NC
    Posts
    8,159
    Not too bad....

    Remove door panel....

    Remove door speaker.....

    Remove three bolts that holds window motor to window regulator....

    Remove window motor through speaker opening in door....

    Remove screws that hold the cover down and the C-clip on top of the small gear.....

    Lift everything out and you will see the bits and pieces of the broken gear plugs.....

    Thoroughly clean everything out and install a new set of plugs (Look for them in the HELP section of the parts store)....

    Hardest part is removing and re-installing the door panel....

    Or is it installing the plastic plugs.....

  6. #6
    Join Date
    Jan 2010
    Location
    Bossier City, LA
    Posts
    2,151
    Quote Originally Posted by the-big-e View Post
    Hardest part is removing and re-installing the door panel....

    Or is it installing the plastic plugs.....
    Hardest for me, on the driver's door, was screwing the bolts in lefthanded. I don't screw well left handed ...

    Let's add "Be CERTAIN to a) get all the old busted plugs out, and b) lube the sucker up. GOOD." As in "Clean out the old, fill it part way, put the big gear back in, put the plugs in, fill THAT cavity up, put the metal gear in, fill the REST in." I used lithium, but I'm about to redo the passenger side and I'll use moly suspension grease there.

    RwP

  7. #7
    Join Date
    Oct 2004
    Location
    Charlotte, NC
    Posts
    8,159
    I use a flat blade jewelers screwdriver to dig all the pieces out of the recesses in th big plastic gear....

  8. #8
    Join Date
    Jan 2010
    Location
    Bossier City, LA
    Posts
    2,151
    Quote Originally Posted by the-big-e View Post
    I use a flat blade jewelers screwdriver to dig all the pieces out of the recesses in th big plastic gear....
    Take the big gear out and flush it with compressed air then wash it with alcohol (not as good in the winter, due to freezing the hands due to evaporation, but eh.)

    Got to get it out to relube the bottom anyway.

    RwP

  9. #9
    Join Date
    Mar 2008
    Location
    easley south carolina
    Posts
    226
    phil, i replaced those plugs in the window motor and reglued the window to the tabs in the track last summer.

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