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sunroof problem[740-760/88] posted by John Fox on
Sunday, 5 July 1998, at 1:56 p.m.
The sunroof in my 1988 745 turbo will not stop at the completion of any cycle unless I take my finger off the switch. So, to close it, I have to stop pressing the switch just at the exact right time, which can be difficult to judge without hanging my head out the window. Also, when I open the pop-up panel, it opens, than will not close. I have to use a screw driver and the manual screw mechanism to just start the panel closing, than the electric switch will work. But again, unless I take my finger off the switch, the roof continues to cycle and will than start opening completely. I have replace the switch with no change. And obviously, the motor still works....Any ideas ???
Re: sunroof problem[740-760/88] posted by nick c. on
Monday, 6 July 1998, at 9:09 p.m.
It sounds to me like the sunroof motor cam gear which drives the sunroof cable has skipped a few or so teeth on the cable and lost its original position. Close the sunroof completely. Now remove the sunroof motor. Now you have to set the motor to its original position with the sunroof now closed. Press & hold the sunroof button(bottom side of course) as if to slide the sunroof back to the open position until the motor stops. Do it again just to make sure. At this point the motor should not run when the bottom side of the switch is pressed. Now press & hold the button(top side) as if to close the sunroof until the motor stops. The motor is now reset to the sunroof close position! Now reinstall the motor back to its proper place making sure the cam gear sits properly on the cable. That's all there is to it!!
Nick