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Interior Semi-Tech General discussion of interior for the Ford Ranger.

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Old 03-01-2016
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Wet Floor

Like many others have faced, my passenger side floorboard is wet. I discovered this the other day while installing my inverter. However it didn't rain for a long time.

Like I had to do before, I cleaned out the cowl drain which fixed it before. Unfortunately this time there wasn't any crud to clean out. Today it is raining, so I took it out for a drive to see if it would get wet again. Sure enough, it was very wet; but I noticed something.

The water was warm like bath water, but it doesn't smell like anything so it isn't coolant (thank God).

I know it must be getting in around the heater core for it to be warm like that. Do note that my heater, defroster, and ac were all off during this previous drive. Also note that I removed my heater control valve and replaced it with a T fitting so the heater core has constant flow.
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Old 03-01-2016
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You would also be losing coolant and it should smell like coolant if it was coming from heater core or hoses.

You should check the drip tray for the condenser just because it is easy to do.

Unfortunately the next thing is to pull the windshield, shouldn't cost too much, and glass shops can do it pretty fast.
The windshield trays can rust out anywhere around the edge, bottom is more common because water sits in there.
And water can leak down above heater core so water warms up on the way down to the floor.

And just as an "oh by the way", the 3rd brake light on the cab is a common leak point on Rangers, and it can make its way to the passenger front footwell, it is warmed up by the Cats under cab.
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Old 03-01-2016
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Hopefully tomorrow it's not raining, so I can see if the carpet gets wet after a drive. Should tell me a lot. I'm hoping it's just the third brake light and not anything with the windshield.
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Old 03-02-2016
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Today, I drove the truck to pick up some groceries. No rain or anything like that. No car wash, no water coming in from the outside.

After that drive, I noticed the carpet is wet. It's not warm either, just wet. The entire carpet isn't wet, either. Just the area right in front of the seat.

I'm satisfied it isn't the heater core at this point. I did have the heat on, but NOT the defrosters. Just heat all the way on.
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Old 03-03-2016
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It would appear I've fixed the issue.

Peeled the carpet back and found two grommets. One, rectangular, grommet plug leading to a body bolt with a small drain hole off to the side and another round grommet plug right by where the seat would be which leads straight out the bottom.

I noticed both of these were very dirty, so I cleaned both then gave a healthy dose of RTV to the smaller, round, grommet. I already had the RTV and I was already there, so I figured I might as well at that point. Left it to cure over night as well as the carpet drying by a fan, suspended so the carpet wouldn't be glued to the grommet.

Bone dry the next morning. I decided to remove the padding under the carpet, as it was damaged and coming apart. I replaced it with a green fabric rug which actually is better than the OEM.

So, with that, I reinstalled any necessary panels, but not the seat (although installing all four seat bolts) and went for a 20 minute drive in the rain with the heat and defrosters on the whole time. Came back and peeled the carpet up again. Success! Dry as a bonfire, although toasty due to (what I believe to be) the cat under the passenger floor.

Only time will tell if this really was the problem. Checked both drip pans for the right and left side of the truck and ironically only the driver's side was plugged up. An ice pick quickly cleared that and let all the nasty water run out.

I also blew compressed air in through the ac drip line, I believe it's called. Didn't get anything out of that, but I feel it was still worth doing.

Also tested to see if there was water coming in from the third brake light. With everything dry, I stuffed a paper towel or two behind the light and sprayed around the area with the third brake light reinstalled. After drying the area, I took the lens back off to find a dry paper towel. Happy about that.

If I think of anything else I did I'll be sure to post.
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