where is all this water coming from?

[unclemikeys2001]

Just got in my 944 after it was sitting for 2 days of rain. Not heavy just light but steady & I noticed my rear passenger footwell filled with water. ....Where did this come from? Ive only recently been parking on an uphill grade if this matters. I also re-enacted the situation with the car in the same spot after sucking up all the water & me watching from the inside while someone sprayed with a hose on the outside. No visiable leaks anywhere from any seals yet the water stated to fill again in the floor. Where is this coming from? Its driving me nuts, not to mention what else is going to wrong now with all the extra moisture in the car. Please help if anyone else has had this happen. Thanks!!!

[Brando]

Check the body section under your battery. Chances are you have some holes rusted through which are leading to your wet foot condition.

[unclemikeys2001]

Battery compartment is fine. 1st thing I checked. Also if that were the case wouldnt the front floor be wet as well? Its dry as a bone in front. Thats another confusing thing.

[many944s]

Make sure your drain tubes from the sun roof lip are draining properly. Sometimes these tubes get clogged and water seeps in around the sunroof, and runs down under the headliner. Could also be your battery box leaking in the pass. footwell.

Goodluck,
Nick

[Eldorado]

I have the same problem.
I was against it being my battery compartment too, because it looked fine...
Because I was at my wits end, I plugged the drain hole in the battery compartment, removed the battery, and filled it up with water. I got in the car and sure enough, there was a steady dripping...

Try that...

Now, with that said, it could be leaking from your sunroof, but if that were the case chances are it'd land on the rear seat...

might be the seals around the door....

could even be windshield.

but I'm putting money on the battery tray.. mine looked to be in good shape too, but it still lets water go through...

[Slam]

Rear window seals. Providing you know for sure the battery box is good.

[Razorback1980]

As everyone has already said...it's the battery box and when it's the battery box, it will NOT make the front floor wet, only the back one....unless it gets really deep. The second thing is as already mentioned to make sure the sunroof drains are not plugged. I am not sure which part of the rear window seals Slam was referring to but there are two problems that occur here. First is the rubber seal between the hatch and the car body but mine has a problem where the window for the rear hatch is coming loose from the window frame and water is running in there. Seems to be a very common problem for this car. You can do a search on my previous posts and find one that covers this repair extensively. Still haven't done it yet but thanks to the smart folks here I now know how.

[Eldorado]

if the leak was in the hatch, wouldn't the water leak into the trunk? especially since he just recently started parking it on an upward incline?

[SoCal Driver]

If you have a gap at the back top of the door and dried out door seals, water can get into the car. Also if the outer bottom seal on the door window is messed up, water can get into the door cavity. This should drain out the bottm but the rather small drains get clogged too easily. This forces the water into the car at the bottom of the door panels.

[Slam]

Hey, Razor, I really did mean the rear windows. You know, the ones on the quarter panels. The rubber vulcanizes and looks fine when you examine it but doesn't seal the window properly. Mine did this, which is why I offer it up as a possibility. Eldorado's right about the direction water going if it is the hatch that's the culprit. Door seals too, as Hugh says. Really, the possibilities are endless! But battery box first.

[unclemikeys2001]

OK, I took out my battery completly & there are no signs of rust. My drain isnt clogged & it seems to hold water well. So this may be a slow leak. There is a seam that is towards the inner fender, which could be the only possible spot possibly...is this where you guys have had problems before? ....I have ruled out the door & hatch. They are totally fine. Im confident that my 1/4 window seals are still good as well. Now the sunroof drains, they dont look clogged but how am I to tell? Im going to drag out the air compressor in the next day or so & try to blow air through them. Does anyone know where these drains exit? .... I havent sealed off that seam yet but if it is the battery box how does the water get only the rear passenger floor wet and not the front? I dont get it. With the crappy rainy weather streak weve been having it sucks to try & track down a leak or get things dry enough to caulk the seam in the battery box. If not caulk what would you guys recommended? ....All your help has been great & appreciated. Keep it coming.

[Eldorado]

dont use an air compressor.. you can disconnect the drainage tubes from their fittings..

use pipe cleaners or, if you're scrounging, weed-whacker twine... slide it in the hole and gently poke around.

my battery box isn't rusted, but still leaks. have you plugged the drain and filled the box with water, then observed a few mins later under the dash in the passenger footwell?

i wouldn't use caulk. if there is no rust, then just use some fiberglass.

[procon]

Recently went through the same ordeal, turned out to be the rear 1/4 window.
Found it by accident when I replaced the rear speakers.

[Razorback1980]

Not real sure why but it's something to do with the floor pan design as to why the water runs around the front and into the back. This is good though as around the passenger area is not a place you want a lot of moisture. Sorry Slam, I totally missed what you were saying....that was a good suggestion and after rereading it, you were quite clear...guess my mind wasn't. That's good to know, I'll check my car to make sure it isn't happening to mine. Any way to check that without pulling the panels inside?

[EEES]

I just bought a 1990 944 cabriolet, and the water filled up in the passenger rear carpet almost instantly when I washed it with the hose. Is there a drain plug that is plugged or has a hose come off? Does anybody know where it is located so I can fix the problem. Top doesn't leak.

Difference is that this is a cabriolet.

Thanks in advance,
Ian

[Peter Green]

sorry for the bump - just sharing - have the same issue - 10cm of water every rain )

Need physics to drain it out. The new part of the story - i found out that my glove box is pretty wet inside!! So it does look like near-battery thing. Will keep on checking it out