Join Date: Jan 2007
Location: Harrisburg, Oregon
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Our truck's sunroof is watertight, even here in Oregon. I've had a couple of other cars with leaky sunroof seals, and they are no fun when it is still raining. One car, a Saab 900S, had a plugged drain tube, and another that had pulled off the sunroof tub. I taped that sunroof closed each fall, and only opened it up in late June. The other was an otherwise nice Taurus wagon with a glass moonroof. Its rubber seal leaked, but the drain tubes worked flawlessly. I replaced the seal around the moonroof, but it still leaked slightly, generally right onto my right shoulder as I drove. We sold that car when we bought the Range Rover.
If you're looking for good tape, there is some aluminum foil tape used for repairing aluminum canoes that works very well. I've sealed rusted-out portions of my Triumph Spitfire's trunk lid with it, and I used it on my old Saab. Unlike duct tape, it will last all winter without needing to be replaced.
If the sunroof motor won't work, the job ahead of you is the usual Lucas troubleshooting routine. Check wiring connetors, clean them, spray them with silicon sealant, and check that the circuits conduct electricity without undue resistance. If the motor won't turn, there are lots in old Range Rovers in junk yards all over the Willamette Valley. Remember to oil or grease the cables. All the adjustments are spelled out in the RAVE manual.