Thread: Water in passenger footwell

You are quite right I think Dave. The duct tape on my fix is the most likely source of the leak (if/when it occurs again), and the perishing foam seals where the duct joins at each end.
Another "roundtuit" job.

Cheers, Paul.

Seal first with a thin line of duct tape for mechanical strength then overlay with 25mm wide "rescue tape" ...amazing stuff!...excellent!

Looks like I've got this problem too. I'll take a look at it tomorrow.

Dammit.

Originally Posted by Craig_Keira

Looks like I've got this problem too. I'll take a look at it tomorrow.

Dammit.

rain or aircon?...or both?

Hard to know. Coming in over the OBD port. Definitely not coolant. It's been raining for days here. I'm going with rain until proved otherwise. Also, the aircon condensation does appear to be coming out under the car. It would appear that isn't blocked (not impossible!)

I have been reading the threads with interest.

My RR is used under tropical & really humid conditions and I rarely have a problem with condensation, irrespective of whether I run the aircon in fresh air or re-circulation mode. I have had 2 previous experiences where I had condensate in the passenger footwell:

1) Condensation is due to icing of the evaporator coil.

2) Inadequate insulation of the aircon pipes running into the vehicle cabin.

This are my only experiences of having condensation leak back into the passenger footwell.

I would take a look at the wiper arm spindles as a suspicious leak point as well.

Originally Posted by Craig_Keira

Hard to know. Coming in over the OBD port. Definitely not coolant. It's been raining for days here. I'm going with rain until proved otherwise. Also, the aircon condensation does appear to be coming out under the car. It would appear that isn't blocked (not impossible!)

Must be an "age"thing... I thought I'd posted a reply...

For Rain:
check post#45 on this thread ... odds on it's the plate covering the pollen filter housing.

The water collects in the bottom of the LH blower, drips on to the tray behind the glove box and pools there until it overflows through the OBDII port...

To seal it will require you to remove the plenum grating in front of the windscreen (and w/s/wipers) plus the two side plastic plates.
The metal cover is held by 5 hex screws (10mm head). Remove it and seal it as per the photo. While you have the grating off, check the state of the filter mesh below. If you need more, you can get it from CLarke rubber (duck pond filter material). The whole job should take about 2 hrs incl cup of coffee time!


If it's the aircon, water pools in the same place and also drips through the OBDII port. That requires sealing the ducting (from the blower to the heater box) where it connects with the heater box... that's a bit more tricky...

I do believe i have a fix...am in the middle of experimenting...will post ...with pics now I finally understand how to do said magic!

Do you have a copy of RAVE? try and get one if you don't...it's invaluable

good luck

A METHOD FOR STOPPING AIRCON CONDENSATION LEAK
After 13 yrs the duct seals appear to be "shot", allowing condensation from the aircon to drip into the footwell rather than be "pushed" by the airflow into the proper place for drainage via the hole in the transmission tunnel...

One reason for this may well be a stuck mixing chamber flap which seems to operate effectively only when the ambient temp is below 15degC and the HEVAC cycles on start up. when the external temp is above 15 degC ...the book symbol appears and one gets cold air all the time in the passenger side... methinks it needs the 'self-tapping-screw-in-the-heater-box'fix...

to the task at hand:

Removed the panel behind the glove box, and then the glovebox.

With a bit of fiddling, removed the duct between the LH blower and heater airbox.

Cut the duct twice and removed a section so that each end could be re-attached without diisturbing the other...this is important.

Cleaned the external surfaces of blower connection and airbox connection to remove residual decayed foam.

after cleaning internal surface of connecting section of each end, pressed in single sided adhesive sealing material (Clarke Rubber) 25mmx 5mm. Experimented with various thicknesses: the 5mm thick material provides a "precision" fit

then added a generous bead of neutral cure water-based colorbond sealant at the inner extremity of travel of the "inner sleeve" where the two sections slide together. This provides a seal with out necessarily gluing the sliding sections together



Refitted each end.



Then insert "missing link" and seal with duct tape


Let sit for 12 hrs for sealant to cure then start aircon...

Very humid day...no more wet feet