Damp Floorboard
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New User
Joined: Mar 2007
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Damp Floorboard
My '96 F150 extended cab has a wet driver's side floorboard. Removed the trim and pulled the carpet back, but can't tell where it is coming from? I've noticed this condition the last couple winters, but not in summer. I thought it might be a plugged drain tube, but dumping water into the area at the base of widshield on a warm day showed that it drains out under the truck. Any troubleshooting tips are appreciated.
Elder User
Joined: Feb 2007
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From: Goose Creek SC
Wing windows are notorious for leaking....the weatherstripping gets bad........water could be coming in around the door if that weatherstripping is shot........it will wick across the carpet from there too. Check your door panels at the bottom for wet.
Use that bucket of water or a hose on the door and see what you get.
Good Luck
Use that bucket of water or a hose on the door and see what you get.
Good Luck
Elder User
Joined: Feb 2007
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From: Mulege south Baja ca. Mx.
that used to drive me crazy until I figured out that every time I got in the truck the heater melted the snow off of my boots and it ran under the mat and froze back up untill spring.
Senior User
Joined: Jun 2004
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From: Florida
Could be the seal under the cowl. Mine did this on the drivers side as well. It would run into the engine compartment under the carpet. I just removed the cowl and sprayed some sprayfoam and let it dry. Haven't had the problem since.
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Joined: Apr 2003
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From: Virginia Beach
Well, on my '87 the air boxes on either side of the front of the cab there are rubber. . .I dunno, like big rubber scuppers. Mine had been filled and clogged with leaves for years (all mulch when I cleaned it out). When it rained the water falling into the front cowling was suppossed to run down and out those "scuppers" but instead was filling and backing up into the space between the cab sheet metal down by the kickboard. Rotted it all out, and the sound deadening material under the rubber mat held moisture all that time and rotted out the floors. I ended up pulling out the rubber bits, scrapping all the gray-foam sealant from the front area (which was also applied over what appears to be drain holes 
) and used a hose to blast out all the gunk. Never had any water in there afterwards 
) and used a hose to blast out all the gunk. Never had any water in there afterwards
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Great ideas!
Thanks for the input. I had not thought of several of these paths for water to get in and will begin exploring them with a hose. I have to admit that I wondered about the snow melt off my boots and have been carefull to knock off as much as possible. Unless I get a tub type floor mat it's hard to rule that out, but the amount of water seems like more than would melt off the boots.
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