The drainage tube from the evaporator is clogged with leaves, and I want to remove the evaporator cover. Seems like I have all the screws and clips off, but the cover still resists being removed - something in the back.
Am I missing some clips or screws near the floorboard?
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Try removing the cowling cover under the hood. There is a cabin air filter under there. See if there are any leaves, etc. built up in there. There is also some concerns that there may be a blockage in the drainage
system surrounding your sun roof, if you have one. Check that also. If that does not work, you can also park with the nose of the car facing downhill somewhat. That always works for us.
The drainage tube for the evaporator case is plugged causing the the condensation to drain inside instead of outside the car. The car will probably need to be lifted to find the drainage tube. Use a pick to gently remove the debris blocking the tube. You must be very careful as not to puncture the evaporator core.
Richard you have to check if your car uses to filter the air-conditioning closed the lid of the engine and where the breeze is a clean-clean grill before you turn off your air off the compressor and that was only working to remove the blower evaporator at all moisture-check that you have good drainage evaporator vote you all that water. Thanks and good luck
the a/c drain tube is ONLY to drain a/c condensate coming of the evaporator in your a/c system. Has nothing to do with rain, but everything to do with high humidity. If you put you a/c in "ecirc" mode when using the a/c, you cut down on condensate draining by about 70%.
WItht he a/c running ona humid day, you should see condensate draining out of the drain tube on the passenger side under the car body.
The rain water is another story. You have an air intake we call a "Rainhat" that is under the leaf screen at the base of the windshield towards the passenger side. If you have rain water dripping or running into the rainhat, it will run into your heater plenum (the big, black plastic thing under the instrument panel).
Remove the leaf screen and look for leaves or other debris clogging the area around the rainhat. look to see if water is running along the metal trim above the rainhat and dripping into the rainaht opening.
I once fabricated a cover over the rainhat using the bottom of a plastic anitfreeze bottle. I made an opening at the rear so it could still draw air in without restriction. It solved the water running along the base of the leaf screen and drooping right inot the rainhat. It rusted the blower motor and ruined it.
I've had this happen with several of my cars and what it inevitably turned out to be was a clog in the evaporator drainage hose. The moisture that condenses in your evaporator casing should drain out through a hose that leads out under your car but if the hose gets clogged that water backs up and ends up on the carpet inside your car. Sometimes its a bit of a hassle to get to but with a bit of work you can usually use a bit of wire or a pipe cleaner to clear it out. If you can crawl under your car, its also possible and sometimes easier to get at it from the there.