So a couple months ago my AC evaporator was full of water and leaking out. I drained the water out of it by opening it and also cleared the drain line which didn't really have any debris in it. This past week the floors were sopping wet, especially the passenger side front. Took to dealer since it's under warranty and they told me the wet floors were due to oak leaves clogging the drains from the hood cowel. This seems a little fishy to me... would Porsche actually have external drains from the hood run into the cabin into the ac evaporator box (where the pollen filter is) and THEN go out of the car?

Anyway... they cleared the oak leaves (which is funny since we park in the garage and don't have oak trees anywhere near us anyway... wife drives the car and doesn't work so it's not like it's parked under a tree all day) and left the carpets soaking wet which of course p*ssed me off.

So step 2 on this... before I break anything do I just pull up on the floor trim to get the carpets up so I can get a fan under them or is there a trick?

Thanks.

-Mag

06' Cayenne Titanium S

 

Sunroof? May have been those drains too.

Sent from my iPhone using Rennlist

 

You don't have to remove anything to pull the carpeting up. If you slid a screwdriver beneath the door opening trim, then rotate it so the handle is being pulled out of the opening, the carpeting will start to pop out from under the trim. Once you have it started just pull on the edge and you can get the entire side by the trim up. Reinstall it by pushing it down and under the trim.

Chances are excellent that the plugged drain is the sunroof drain. Someplace there is a thread I did about this, and how to clear it out, and how the leak gets from the sunroof down to the footwell. It basically overflows the sunroof catch basin, then runs down inside the windshield/door pillar, through the fusebox and behind all the trim to end up beneath the carpeting.

There is about 1.5" of foam rubber under the carpeting. It will be saturated. You want to squeeze as much water as you can out of it, then prop up the carpeting so the foam rubber can dry out. Heat will help, but don't set the truck on fire (unless you intend to..)

It's worth doing this NOW, since there are wiring bundles running under the foam rubber which are now submerged in the water. They have splices in them somewhere there that have corroded on other people (mine have been OK) and caused bizarre electrical problems.

The forward sunroof drains can almost be seen in the furthest forward/out corner with your head through the sunroof opening (open of course) using a Maglite to illuminate the corner. Chances are - it's plugged up. I now check mine every fall after the leaves stop falling, and it usually needs cleaning.

My thread has detailed pictures - and it's either here - or on Renntech - I go by the same username there if you want to search by username.

 

Clean & Clear Sunroof Drains.

A Good thing to include in the Annual Maintenance Check List.
THANKS for the information! Some have removed the heater core??

 

Mine was something totally different , all it was causing the leak is a missing clip holding the engine plastic covers together....namely the one directly above the blower fan intake !!! So when it rained it would run down the plastic trim and drip into the fan from loose plastics and missing plastic clip.