Soaked carpet on driver's side, front, under seat, and rear

I've been noticing a wet dog smell in my truck for awhile, and after the truck was parked outside for two weeks over xmas, decided to figure out what was going on. Driver's front mat was wet, and carpet on drivers side, under seat, and rear footwell all completely soaked. There was standing water underneath gathering at the low points in all three places.

I've been driving with the heat on to dry it out and it's still wet - that's how soaked everything was. Have garaged it since then, so I know the water is from a while ago.

Today I pulled up the carpet again, closed up the truck and poured water all over the outside -- still can't find where the leak is. Dealer said (without any diagnostics done) it's likely a windshield leak, but why would the rear floor be wet too?

I'm thinking of asking the dealer to perform this TSB - http://www.customtacos.com/tech.old/files/tsb/BO02600r2-9704-Leak.pdf - seems like people have had some success with that.

Any other ideas? I'm entry-level DIYer but up for a challenge if it means I can dry this truck out. Had it for 175k miles and it needs to run another 175k.

Thanks.

 

Tackled this a couple weeks ago, it's your weatherstripping I bet.

 

thanks for the help - I'll go ahead with that and hope it does the trick.

 

No problem. I went with OEM not aftermarket if you need the part # let me know. I used 3m weatherstripping gasket too. All leaks have stopped after this.

 

Really like the king ranch leather mod in your truck, nice work.

Part number would be great - thanks.

 

a word of caution when installing, I have done dozens of these and after a year it will shrink about an inch so when you install it make sure its fully seated and not stretched in any way. try to push it in towards whats already in place and leave about 2" extra overhang then put the 2 ends in first in the center of the bottom strip and push both sides in working towards the sides to force it into place.

the idea is to cut it long but force it into place anyway, this way as it shrinks you wont have a 1"-2" gap open up after a year or so and keep the extra in case you need to patch a spot after shrinkage. if you do cut about an 8" section to patch in not just whats missing, if you put a little piece in it wont seal properly and where it joins together I cut a section of the "tube" part about 6" long and slide half int each open end so there are no gaps.

lastly, use a good 3m bonding adheasive to secure it in place on the top and sides but not at the bottom so it still has room to move there

 

If that doesn't fix your problem check out this thread, a bunch of guys and I have been hunting ours down for awhile. Ours are on the passenger side but some of the info could still apply. Good luck.

https://www.tacomaworld.com/threads/water-passenger-side-floor.470004/

 

Are you talking about on the left side where the clutch pedal normally is? In autos it's just a foot rest

 

Might wanna check the moisture barrier on the inside of the door panels. It's a plastic sheet. My leak was from there...Still have a leak on the back wall...But only a drop per rain session