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BMW 3-Series (E90 E92) Forum
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AC Condensation Drain 335d
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08-05-2018, 01:00 PM | #1 |
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AC Condensation Drain 335d
My 335d seems to be draining condensation from the AC directly underneath the compressor. I don't remember this happening last summer, so I think it may be new. I recently had work done to the AC system (new evap core and new compressor).
I had the evap core replaced at a dealer in Houston (Momentum BMW. Don't ever go there. Story for a different thread, but seriously, do not go there.) I hadn't noticed any issues myself, but it was a warranty repair, and would probably need to be done eventually anyway, so I figured whatever. The AC compressor has also been replaced shortly thereafter. Now I notice drainage in the location pictured below. It's turning the under shield, which is basically cardboard, in to a soggy mess. There is enough water pooling up on the inside of the under shield that it soaks through and drips to the pavement. I would expect to see condensation drips more toward the middle of the car, but not up at the front passenger side as in the picture. I thought this might be oil from the boost hose at first, but I can confirm that it is not. It is, in fact, (cold) water. Does anyone else's 335d (or other M57) dump condensation right there? What would cause this? The first picture shows the water soaking the under shield on the front passenger side. The second shows some of the water pooled on the inside--it's not a great picture, but you can see the flash shining off some of the pooled water. It's the best I could do. Has anyone else experienced this? Any advice on diagnosis? Last edited by Evergreen24; 08-06-2018 at 02:19 AM.. |
08-05-2018, 02:05 PM | #2 |
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I can’t help you directly but it’s good to turn off your a/c a few minutes before you turn off your car to dry the condensate on the Evap
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08-05-2018, 03:20 PM | #3 |
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I've heard that. I do it from time to time, and it does make a difference in the smell--although it doesn't totally eliminate it. I'm not as worried about the smell as the actual drain of the condensation, though.
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08-05-2018, 04:49 PM | #4 | |
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08-05-2018, 07:09 PM | #5 |
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e90 condensation drain is under heater core in dashboard, condensate draining on gearbox and evaporates from hot gearbox case
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08-06-2018, 02:35 PM | #7 |
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The drain for the AC is next to the transmission on the right side of the cassis right about even with the output flange. It drains onto the ground.
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08-06-2018, 02:37 PM | #8 |
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08-06-2018, 04:14 PM | #9 | |
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08-06-2018, 09:13 PM | #10 |
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Coolant.
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A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."
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08-19-2018, 09:55 AM | #11 | ||
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And it's cool to the touch. So I don't think it's coolant. |
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08-19-2018, 10:44 AM | #12 | |||
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08-19-2018, 10:50 AM | #13 | ||||
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I guess what I'm getting here is that this is not something other people experience? |
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08-19-2018, 10:51 AM | #14 |
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U don't hav headlight washers by chance do u?
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08-19-2018, 01:18 PM | #16 |
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I'm guessing it's ur DD, is the leak present after over night parking
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08-19-2018, 01:21 PM | #17 |
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No, it's only present after the engine has been running.
Is it possible that it's condensation from the AC compressor that's supposed to drain somewhere else? |
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08-19-2018, 04:23 PM | #18 |
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335d, air conditioner, condensation, drain, drip |
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