I have the same issue on the passenger side of my van. I think the
water is coming from the gap between the rear side window glass and
the black sponge and plastic vent part at the rear. In a heavy rain I
can see a bead of water on top of the window seal, then it drips
down...

Chris

On 11/13/06, Max Wellhouse <maxjoyce@ipa.net> wrote:
> Listees and Gurus alike:
>
> I'm in the final phase of PORing some rust issues(not REAL serious
> rust) in the 90GL and thought I had solved a water seepage problem
> only to find more wet last night in the same places.  The locations
> are in the driver's side body panel just before the rear seat and the
> floor board adjacent to it ie under the rear seat cushion just in
> front of the ECU mounting.  The "new water" in there is not rear
> heater coolant, but has assimilated its way in within the last week
> or so since I had the floor matting and jute-type insulation removed
> and returned to its original location.  I don't want to put the rear
> body trim panels back in or the rear seat until this issue is solved.
>
> 1.  The water has primarily collected in that 9-11" "well" before the
> wheel well begins its arch upward(maybe 1-2 oz), although putting in
> dry fiberglass insulation back in the panel in front of it a week
> ago, the bottom inch of insulation was wet for a good 2' forward of
> the body seam, but wetter back by the seam and tapering off the
> further forward you went.  The well holding the 1-2 oz puddle had no
> insulation in it
>
> 2. Since the top piece of fiberglass was not wet and the top section
> of the bottom piece that was wet were dry, I'm assuming this didn't
> come from leaky window glass gaskets.
>
> 3.  I have shined a 300W halogen work light up and down the exterior
> of the van and looked for light coming inside the van after dark to
> find no light making its way into the cavities.
>
> 4.  There is an external  round rubber plug in the driver's side rear
> wheel well that appears to be solidly in there, but would be exposed
> to spray off the left rear tire I guess.  There is an oval  rubber
> plug  visible from under the van along the transition seam from the
> horizontal to vertical panels that also appears to be well fitting
> and not leaky and it appears that there's no water coming in from the
> panels further to the rear on top of the wheel well.
>
> 5.  My next step after drying out the affected area will be to go to
> the car wash and force high pressure water throughout the area and
> see if that gives any clue.
>
> Anybody got any ideas on tracking this down or where the leak(s)
> might be coming from?
>
> TIA
>
> DM&FS
>
>
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