Water in cab under floor mats

I have a 2006 4wd 2.7l standard cab and after it rains the carpet under the floor mats is literally soaked. I had a 2004 tacoma with the same problem due to a leaking wind sheild gasket and could see the water dripping in. I just can't seem to see any water coming in in the new truck. Has anyone had a problem like this?

 

Check all the small little rubber gaskets underneath.
Is there a place where the wetness starts.
BTW Welcome to TW from TX.

 

Welcome to TW from Cali. Also make sure to leave a window open so you dont mildew

 

Just because you can't see it doesn't mean it isn't leaking from the windshield. Look behind the dash for signs of water. Also look down the A pillars as well.

 

If it's on the passenger side then maybe your condensation hose for the heater/AC is clogged causing it to backup into the cab.
Jim

 

Check the rubber plugs underneath the cab:



Or look for leaking A/C hoses.

 

You would have to get a serious volume of water underneath to soak through the carpet and then soak the floormats. The truck would almost have to be submerged. Plus, water would run down. I would investigate the windshield seal and the top of the doors.

 

Possibilities that many of us have experienced firsthand:

1. The TSB for the leak in the cowl. You can look that up and test it if all else fails.
2. It could just be a plugged/leaking drain hose from the heater box.
3. You could be getting water in there through the cabin air intake (many of us have had this problem which gives you a serious amount of water in there in a short period of time...usually from a heavy downpour). This last one is the culprit if you turn the heater fan on and it blows water out the vents. It's caused by junk getting between the cowl and the windshield which lets water just go straight down into your fan. If this is the culprit, I can point you to some pics of someone (besides myself) who recently had this problem too.

 

Thanks for all the info!