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02 double cab wet carpet
I have an '02 4WD V6 double cab that I bought used a couple months ago. So far I love the truck. To my recent disappointment, however, I discovered the carpet was damp after recent rains, particularly in the driver side (front and rear). It is definitely water and not antifreeze or anything else. I did some reading on the forums to find threads with similar issues to see if there was anything common I should be looking for. I figured I'd start my own thread as I work through my diagnosis.
I pulled the door sill trim and front kick panels to investigate further. Under the driver's feet the padding is soaked through which is why it is starting to come up through the carpet there and in the back. The passenger side front floor is completely dry, and I have not verified the rear passenger side yet. The floor pan on the driver's side is best described as looking like it has condensation on it, and there is water in the track where the wiring bundle runs to the rear. After my research in the forums (as well as the TSB BO026), since it is still raining today I looked at the usual suspects:
- I checked the interior firewall for any signs of water entry especially near the fender/wheel-well welds, and around all grommets that I could see. There is no trace whatsoever of any water entering at the firewall and dripping to the floor, it's all dry with a coating of accumulated dust.
- I ran the A/C on my way to work and then checked the condensation drip line in the engine bay to make sure water is dripping OUT and not IN somewhere, and this looks fine - water was coming out at the exterior firewall.
- I checked the engine bay area along the cowl pinch weld and around the wheel wells and grommets that I could see. Everything looks dry, with the minor exception of the passenger side wheel well, a bit of water pooled on top there but because there's no corresponding interior leak I do not think this is a problem.
- Recently I'd bought a plastic trim tool kit at Harbor Freight and this was the perfect first time to use it. I gently pried open the interior trim on the driver's side (front and rear) doors at the bottom to see if any water was coming through the plastic moisture barrier somewhere. The only thing of note so far is a small (maybe the size of a nickel) separation or "bubble" in the moisture barrier on the driver door toward the back.
I will need to check on that moisture barrier separation and repair it and see if any other areas are coming apart. There was definitely a lot of water drops on the inside of the moisture barrier (inside the door toward the exterior). I'm skeptical though that if this is the only hole I've found that all of the water I saw could possibly be coming from there alone. The rear driver's side door does not appear to have any problems so far.
I'm hoping to nail this down because the truck already has a stink to it from the moisture and I can't really air it out yet as the weather is not cooperating. I would consider changing out the carpet but obviously I need to make sure I kill the source of the leak (or leaks) first.
Last edited by martytoma; 10-31-2012 at 10:10 AM.