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Evaporator Drain
I've been getting water accumulating in the rear driver's side floor pan. The front driver's side carpet has also been getting wet. At times, I've had about two inches of water in the rear floor pan. I previously got my water hose and attempted to find the leak. I noticed when I sprayed on the driver's side doors, water would leak in. I thought I found my problem. Well, yesterday I took a long drive in the hot Florida sunshine with my A/C blasting and noticed I had about two inches of water in the rear floor pan.
At this point I knew there was a problem related to the drainage system for my evaporator. This morning I pulled the kick panel on the driver's side and found my drain with NOTHING ATTACHED. The evaporator was literally draining to the inside of the car!!!!!!! If anyone has ever attempted to reattach a drain hose they know what a nightmare this job can potentially be. The drain on the box is only about 1.5 inches above a drain hole cut into the body just above the transmission. Its right in the middle of the console so there is almost no room to work with. I started by going to Pep Boys and getting a 3/4 diameter heater hose. After much frustration, bruises and scrapes I decided it wasn't going to work. I simply could not get the hose to slip over the piece on the evaporator box. FYI, all of this work is done from inside the car, not under it. I then tried to find a more flexible, thin walled, plastic tube that would be easier to stretch over the connection on the evaporator box. Remember, there is almost no room to get your hands in there so I was using extended needle nose pliers to try to slip the hose on. I tried every trick in the book including assembly lube, heating the hose and even cutting small slits into the hose to help it expand. Nothing worked. I then drove to Home Depot because Pep Boys didn't have any other type of tubing. Home Depot had the plastic tubing I wanted but I had to buy a large piece which was $16. At that point I got the perfect idea! The tubing didn't have to be a tight fit around the evaptorator drain because it was simply allowing a small amount of water to run through it. As long as the tubing went up over the piece on the evaporator box, it would be fine. I had some flexible plastic corrugated tubing left over from a marine bilge pump I had purchased years before. I was able to cut off about a 3 inch piece. It slipped over the evaporator box fitting easily and I was able to wedge the rest of it through the hole in the floor where friction is holding it tightly in place. Four hours later my problem was solved. Now, who was the a$$ho&# who removed the drain tube and didn't put it back? Scott
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Scott 1982 Mercedes 240D, 4 speed, 275,000 1988 Porsche 944 Turbo S (70,000) 1987 Porsche 911 Coupe 109,000 (sold) 1998 Mercedes E300 TurboDiesel 147,000 (sold) 1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!) 1997 Mercedes E300 Diesel 236,000 (sold) 1995 Ducati 900SS (sold) 1987 VW Jetta GLI 157,000 (sold) 1986 Camaro 125,000 (sold - P.O.S.) 1977 Corvette L82 125,000 (sold) 1965 Pontiac GTO 15,000 restored (sold) |
#2
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Quote:
Edit: There is a similar POS foam tubing under the dash.
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AJ 1985 300D (SOLD) |
#3
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I was gonna say, the aspirator tube is foam, didn't know the drain would be made of that.
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79 MB 280 SEL Euro 133k 77 MB 450SL 154k 05 Mustang GT Vert (3) 104k 12 TSX Wagon Tech (66k) (192k) 06 Subaru Outback base (135k) 164k 16 Acura MDX (109k) 111k 18 Silverado 2500 LTZ Midnight (212) 56k 97 Ford Ranger 163k 11 RAV4 154k 01 Escape 173k 04 Honda Pilot 292k 1967 Mustang (Resto Project) 1968 Mustang (Parts Bin) 00 Ford Ranger 124k |
#4
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The fix is pretty simple. Take a pop bottle (I used an iced tea bottle), cut off the top, at an angle, stick the threaded lid portion down into the hole in the transmission tunnel and use the other end as a kind of funnel to catch the water coming out of the drain.
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1977 300d 70k--sold 08 1985 300TD 185k+ 1984 307d 126k--sold 8/03 1985 409d 65k--sold 06 1984 300SD 315k--daughter's car 1979 300SD 122k--sold 2/11 1999 Fuso FG Expedition Camper 1993 GMC Sierra 6.5 TD 4x4 1982 Bluebird Wanderlodge CAT 3208--Sold 2/13 |
#5
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Quote:
Scott
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Scott 1982 Mercedes 240D, 4 speed, 275,000 1988 Porsche 944 Turbo S (70,000) 1987 Porsche 911 Coupe 109,000 (sold) 1998 Mercedes E300 TurboDiesel 147,000 (sold) 1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!) 1997 Mercedes E300 Diesel 236,000 (sold) 1995 Ducati 900SS (sold) 1987 VW Jetta GLI 157,000 (sold) 1986 Camaro 125,000 (sold - P.O.S.) 1977 Corvette L82 125,000 (sold) 1965 Pontiac GTO 15,000 restored (sold) |
#6
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Where is it and what does it do?
Thanks, Scott
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Scott 1982 Mercedes 240D, 4 speed, 275,000 1988 Porsche 944 Turbo S (70,000) 1987 Porsche 911 Coupe 109,000 (sold) 1998 Mercedes E300 TurboDiesel 147,000 (sold) 1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!) 1997 Mercedes E300 Diesel 236,000 (sold) 1995 Ducati 900SS (sold) 1987 VW Jetta GLI 157,000 (sold) 1986 Camaro 125,000 (sold - P.O.S.) 1977 Corvette L82 125,000 (sold) 1965 Pontiac GTO 15,000 restored (sold) |
#7
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I cannot remember what the tube is called (I"m sure someone will correct me or let us know).
I replaced the one in my 85 with a piece of the clear stuff from HDepot. Without going into too much detail... Here is one of many threads that talk about it: Climate Control Temperature Sensor Edit again: I forgot to mention that it is my thinking that MB used foam in some of these areas to prevent squeaks or rattles between different components.
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AJ 1985 300D (SOLD) |
#8
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Here is another current related thread: Air conditioner Drain Hoses
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1993 W124 300D 2.5L Turbo, OM602.962 2000 Chevrolet Cavalier, 2.4L DOHC 2002 Ford Explorer, 4.0L SOHC 2005 Toyota Prius, 1.5L http://www.fuelly.com/sig-us/40601.png |
#9
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Recycled
for new members.
These foam hoses deteriorate, and become plugged or leak into the passenger compartment. I suggest replacing them with modern rubber or plastic hose. |
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