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#1
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W202 Water in Passenger Footwell, AC Leak?
Since last summer I have noticed a musty smell in my '97 C230 whenever the interior gets hot from sitting in the sun, but it's always disappeared once the air in the car circulated some, so I never gave it much thought. I recently decided to find the source and traced it to dampness underneath the carpet in the passenger footwell. The foam attached to the back of the carpet was wet (enough to squeeze out 2 or 3 oz. of water) in one place, and slightly damp in others. There was no dampness near the door even though it rained last night, so I figured it couldn't be coming from the outside.
The only thing I can think it could be is condensation from the AC. I tried to run the AC today to get it to leak with no luck. It was a rather cool day today(mid 80s) and I was only able to run it for about 15 min, so I figure there just wasn't enough condensation. Does anyone have any experience with this? Could a drain for the condensation from the AC be clogged or dislodged? How would I go about checking this? Thank you for any help anyone can provide. |
#2
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This process will take an hour or so, but it will fix the leak.
The problem is the drain in the cowl in front of the windshield (which is also the air intake for the AC system) is clogged. When the drain clogs it runs in through the fresh air vent, through the blower motor, and onto the floor. You need to remove the plastic parts that cover the air intake. It will help to raise the hood to the verticle position. There are screws, plastic clips, and as I recall, little plastic buttons that hold those pieces in. You need to remove the whole thing, as the drains on the driver's side are probably clogged too. This is the piece that you are removing: http://tad.grosvenor.org/gallery/C280Mods/IMG_3051 The most important drain is right behind the right front wheel, in the engine compartment. This tends to collect leaf litter that sifts its way through the plastic cover on the intake. I used my finger, the hose, and a bent coat hanger (to get to the vents under the wiper motor) to clean the drains on mine. Once you get the cover off, you'll see the air intake, and the drain. This is the bottom of the air intake box. You can see the pine needles in the drain on this one. Be sure to clean the debris from the area outside of the drain too. On mine it all flushed out onto the ground without too much effort. http://tad.grosvenor.org/gallery/C280Mods/IMG_3053 -Tad |
#3
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Tad-
Thank you very much for your help, I found that both drains had a suprising amount of debris, which I was able to flush out easily with a hose. I appreciate your detailed description, and the pictures were particularly helpful. I can finally be rid of that embarassing smell! Thanks again. -Vonn |
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