Ecoboost Performance Forum

I'm exhausted and my search skills are failing me.  Is there a thread already on how to address the issue of water running into the passenger footwell?  Whenever it rains the floor mat on the passenger side front seat gets soaked.  If there's not an existing thread, does anyone know of a fix for this?

It sounds like the Sunroof drain is clogged IMO! There is 1 Drain hole located inside the Sunroof on the far (Passenger side) corner of the Sunroof IIRC!
Compressed air would be ideal to clean out any Dirt Buildup PRIOR To Spring and Fall similar to the A/C Drain. Z
MID-Page

https://www.ecoboostperformanceforum.com/index.php/topic,3710.15.html (https://www.ecoboostperformanceforum.com/index.php/topic,3710.15.html)

https://youtu.be/vh-bI3ZdRoA (https://youtu.be/vh-bI3ZdRoA)

Thanks man, I'll  check those out after work.  I tried to find the source of the leak earlier but no dice.  When the door is open it looks like you can see water dripping down the door jamb.  But it's coming from under the trim of the dash, so I can't see the source.

Not sure about the Taurus but my Lincoln LS  had the hose come completely off (a known assembly problem). If you took the door trim pieces off you could pull the roof liner down enough to get your hand in and reattach it, just.  At least you can tell if it is connected.

Did you get a new windshield lately?
Had this happen to my 14 f250 the installer didn't use enough sealant....

No windshield replacement.  I'm scared that it's going to be that hose that Tarmstrong is talking about.  That would make sense with the symptoms I'm seeing... I just REALLY don't want to pull apart interior trim. I suck at it and always ends up looking crappier when I put it back together.

Hey Agent...,

I had/have the same issue with my MKS (2010).

Yes, unclogging the sunroof drains (and the door ones while your at it), using compressed air or a mild/diluted drain cleaner solution, will do the trick albeit temporarily.

What i found is that, if you park on any type of decline (usually on the right side here in America) curb, so say you park close to the curb to avoid the car being more in the middle of the road etc, the slight angle results in water overwhelming the sunroof drains (on the passenger side usually) much more readily than it would if the car is level (from side to side, not talking front to back).

I kept cleaning the drains over and over, but would still get a leak if it rained really hard or a really long time.  then once i started not parking so close to the curb and made sure at least half my right tires were on the street, vs being on the drain decline that most streets have to help water get to the storm drain, I no longer got any water seeping in the cabin.

try it out...

I just noticed I'm have the same issue after recent heavy rain.
Did you ever find a resolution?

I didn't.  I suspect it has to do with the drainage from the sunroof.  But from what I read you need to pull some interior trim pieces apart to get to it.  I can work under the hood all day, but interior stuff scares me, lol.  Somehow I always break little plastic bits, and things always buzz when I reassemble.

Quote from: Agentlongwood on June 18, 2019, 06:28:28 PM
I didn't.  I suspect it has to do with the drainage from the sunroof.  But from what I read you need to pull some interior trim pieces apart to get to it.  I can work under the hood all day, but interior stuff scares me, lol.  Somehow I always break little plastic bits, and things always buzz when I reassemble.

Thx for the update.
I did some investigating and found both drains under the windshield cowl were completely blocked.
Tore everything apart and cleaned with anti microbial cleaner to prevent scum build-up. Lubed the windshield are pivot points with dry silicone spray.
Finished off with formula 303 on the cowl plastic bits.
I couldn't believe how nasty it was in there. 

The floor itself wasn't too wet I pulled up the carpet and it wasn't damp at all.
So my husky floor mats kept everything contained.
On a side not I've had this car since March 2012 with 22k miles , I had no idea there was sound deadener under the carpet. It doesn't look factory....

Passenger side drain
(https://uploads.tapatalk-cdn.com/20190619/17d9479399dcde4ccca6513a91eef80e.jpg)
Drivers side
(https://uploads.tapatalk-cdn.com/20190619/3935bcbf1ab4c47c09bfe403271d90f4.jpg)
Sound deadener
(https://uploads.tapatalk-cdn.com/20190619/0b33c7f3c1a665b0414335c99a05f369.jpg)
Remnants left on garage floor from drains
(https://uploads.tapatalk-cdn.com/20190619/3e679a16ab714338415235802a799fa1.jpg)(https://uploads.tapatalk-cdn.com/20190619/d08e879a52a13e5121c1e27e8831380d.jpg)

Whoa, that is awesome, and it also fits with a previous car I owned.  I had a Pontiac Grand Prix GTP that got water in the passenger side and it was from something where the windshield meets the hood.  Your photos are zoomed in so far that I can't actually tell where they are on the car, lol.  When you say under the windshield cowl, that's on the outside of the car right?  Is it the bit thats kind of where the windshield wipers sit?  Like the plastic cover at the very back of the engine bay when you open the hood?

*Edit* I found them.  Well the passenger side at least.  It's dark out so I just messed with some of the plastic bits, and pushed them out of the way.  Didn't remove the wiper arms.  I could get to the passenger side, but not enough wiggle room to get to the driver's side.  Yup the one I got to was 100% blocked with leaves.  Vacuumed it all out.  The crazy thing is, that rubber oval that was filled with leaves looks like it serves ZERO purpose other than to get clogged.  It's just a 2-3 inch long rubber drain that folds closed at the end.  So water can pass through it, but not solids.  I guess maybe the occasional leaf falling into the engine bay is catastrophic?  lol.  But years and years worth of leaves building up is just fine?  Anyone when I was vacuuming it, that rubber oval popped out, and all I could think of was "Why are you here?  If I threw you away it would just be the same sized hole for water to drain through."  And of course when I put all the trim back, it didn't seem to fit right... everything felt a little loose... I swear, trim is my kryptonite.

One more item to be OCD about :D

After all that, it didn't fix the leak lol.  It looks like mine is actually coming from the sunroof or something.  We just had a heavy rain and while in the car I could see water rolling down the plastic trim that curves down to form the door sill.

:o  Make sure the door drains are also unclogged then.

Will do. I'll take some pictures when I get a chance.  Too much of a pain to try and just explain where it's coming from. 

You are not alone :D
https://www.ecoboostperformanceforum.com/index.php/topic,3710 (https://www.ecoboostperformanceforum.com/index.php/topic,3710)

So, today I found out that my 2011 MKS had the pond option in the front and rear passenger footwell. Imagine my delight as I'm driving hearing this sloshing sound. The water is actually underneath the carpet, we did have very bad storms the night before with driving rain. For the life of me I can't find the source of the leak. I will check the moonroof drain, and the cowl drains. Where are the door drains located/what do they look like? When compressed air is recommended I assume it means using an air compressor, not the compressed air computer type cans.

Any discolored parts on the headliner?  When my moonroof was slightly out of alignment it would trickles water down to the floor,  but would also discolor the roof.

https://www.facebook.com/topher.mctopherton/videos/10157214430947685/

The roof alignment was only off a tiny bit ..  but allowed water trickle in and FILL my backseat passenger floor area. 

Quote from: TopherSho on August 03, 2020, 12:12:33 PM
Any discolored parts on the headliner?  When my moonroof was slightly out of alignment it would trickles water down to the floor,  but would also discolor the roof.

https://www.facebook.com/topher.mctopherton/videos/10157214430947685/

The roof alignment was only off a tiny bit ..  but allowed water trickle in and FILL my backseat passenger floor area.

No water on headliner whatsoever

(https://uploads.tapatalk-cdn.com/20200804/5de6bb9e419f7cdf8aa9a1269dada280.jpg)
So I checked the moonroof drains, I checked the door drains, I blew those out with my air compressor. When I checked the cowl drain on the passenger side it was clear, I noticed the owl itself was very loose. When I checked the drivers side I found what was in the pic, pieces of windshield, mulch and dirt.  I shop vac'd then I used my air compressor to blow it out. Then I realized the cowl was not properly seated in the channel under the windshield. So I seated it and clicked everything back into place clips and all. I vacuumed up at least 2 1/2 gallons of water in the front and rear passenger footwell. I'm thinking the cowl flooded and the hvac intake was the point of entry into the cabin. There is i plastic type shroud that is in the front passenger footwell that I suspect was the point of entry for the water.

Oh man, glad you found it.  Hopefully that fixes it.  I live out in Cali, we don't know what rain is, lol.

Quote from: SHO NVS on September 25, 2020, 02:28:51 AM
Oh man, glad you found it.  Hopefully that fixes it.  I live out in Cali, we don't know what rain is, lol.

Well the flood happened again, lol. What I have noticed is the plastic cowl is loose and moves around. I also noticed that there is a lip on the cowl that slots into a channel at the base of the windshield. The lip on the cowl is bent in a few places. I am able to set it and rubber will fit right on the windshield however it eventually slips out. I'm thinking when this happens and it rains the volume of rain increases because the seal of the rubber isn't against the windshield overwhelming the drains and then flooding over into the AC inlet.

I'm contemplating possibly running a bead of silicone in the channel and setting the the cowl piece. However, I am thinking that may not be a great idea.