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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 08-19-2014, 12:46 PM
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samadkins29 samadkins29 is offline
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AC Smells, Where are the coils?

Hey, after I turn my AC if I leave the fans on the car fogs up and smells horrible (For several minutes). Does anyone know where the AC evap coils are located?
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  #2  
Old 08-19-2014, 10:03 PM
gammodm gammodm is offline
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Try changing your filters first


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  #3  
Old 08-19-2014, 10:34 PM
Married 2 the 7 Married 2 the 7 is offline
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My car is doing the same thing. Anything other than then Max AC the car smells and feels humid and with the windows fogging up shortly after. Just changed my cabin filters this weekend. Got Mann filters carbon so now I don't know what the problem is.
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  #4  
Old 08-20-2014, 09:30 AM
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samadkins29 samadkins29 is offline
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Ordered some last week, should have them tomorrow. I guess I should add that I only get the smell after the AC is turned off. Heater and turning the AC does not smell. Reading over various articles it sounds like I have buildup on the evap coils. But ill put in the new filters first and go from their. They needed to be replaced anyways.
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Old 08-20-2014, 12:46 PM
Married 2 the 7 Married 2 the 7 is offline
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Quote:
Originally Posted by samadkins29 View Post
Ordered some last week, should have them tomorrow. I guess I should add that I only get the smell after the AC is turned off. Heater and turning the AC does not smell. Reading over various articles it sounds like I have buildup on the evap coils. But ill put in the new filters first and go from their. They needed to be replaced anyways.
I have the same problem. Only smells after AC is off or heater is off. hopefullly you have better luck with your cabin filters. I changed mine and it still smells. Keep us updated
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  #6  
Old 08-20-2014, 09:25 PM
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Doktorek Doktorek is offline
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My AC smells when you first put it on. Coils are located below the radio. There are 2 AC drains draining water on each side of the tranny. I will post pics tomorrow. I purchased the special coil cleaner and will be spraying into the compartment. Will post DIY Soon.
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  #7  
Old 08-21-2014, 02:03 AM
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Quote:
Originally Posted by Doktorek View Post
My AC smells when you first put it on. Coils are located below the radio. There are 2 AC drains draining water on each side of the tranny. I will post pics tomorrow. I purchased the special coil cleaner and will be spraying into the compartment. Will post DIY Soon.
Would love to see results. Keep us posted
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  #8  
Old 08-21-2014, 08:47 AM
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Here are some shots. I will be spraying that foam stuff into the coils via the tube
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  #9  
Old 08-21-2014, 11:35 AM
gkent gkent is offline
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Very common problem... it's poor drainage causing excess condensation in the evap coil area and mildew growing on the coils.

I too changed my cabin filters and sprayed crap loads of coil cleaner into main air inlets (after cabin filters), vents, and inside air return. Helped for a bit but musty smell returned.

I then crawled under the tranny area where I thought there was only 1 drainage tube... there are actually 2 on each side of the tranny. I only recall seeing condensation dripping out of 1 ever since I owned my E65 ...
SO, I took of the tranny plastic/heat shield, and using a shop vac, I pulled a vacuum/cleaned BOTH drip tubes ...

Low and behold, I now see 2 distant drip patterns on the driveway and no smelly AC anymore ....
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  #10  
Old 08-21-2014, 12:58 PM
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Doktorek Doktorek is offline
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Well, I have water dripping from both sides and it still stinks. You see on the pictures where the plastic meets the rubber? Im planning to inject foam through that tube straight into coils. Im still waiting for the foaming product to arrive via mail.
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  #11  
Old 08-21-2014, 01:17 PM
gkent gkent is offline
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Ah, got it. I still would suggest you try to suction both tubes ... could flow partially but still allow some standing water below the coil .. just my theory. This completely fixed my smelly AC problem.

What foam product did you order ? I saw some time ago people use CRC Airco Cleaner, but I couldn't find a place to order it.
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  #12  
Old 08-21-2014, 01:36 PM
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1Z Einszett Klima.

This is a video on some import. It has a pretty long tube.




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  #13  
Old 08-23-2014, 05:25 PM
idris422 idris422 is offline
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Since I am having that same situation with the odor. What is the spray foam that can be used to get rid of the smell?
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  #14  
Old 08-28-2014, 11:57 AM
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OK, I cleaned it up today. Will see results tomorrow.
Here are some pics.

Evaporator coil is behind/under the radio. I pulled the side panel, I made a cut witha blade in the rubber boot, squeezed the little tube that comes with the sprayer inside as far I was able to push it. I Sprayed the fluid and pulled on the tube while spraying. And then silicone the cut.
Then I stock the tube in each vent, sprayed for 3 sec and then pulled the tube out still spraying until the end of the vent.
I did that with every vent including window defrost vents and the footwel vents.

We will see results tomorrow
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  #15  
Old 08-29-2014, 05:58 PM
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let me know how it went
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  #16  
Old 08-29-2014, 10:10 PM
QuarterTilEight QuarterTilEight is offline
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I would love to know if it worked also.
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  #17  
Old 08-30-2014, 02:17 PM
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samadkins29 samadkins29 is offline
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Got the Cabin air filters installed. Still smells a bit off. Waiting for the outcome as well!
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  #18  
Old 09-01-2014, 07:22 PM
rippjd rippjd is offline
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Attached is one of BMW's procedures using the recirculation mode...
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File Type: pdf SIB 640403 Musty Odor.pdf (62.4 KB, 31 views)
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E65/E66 Parts for Sale:
Alpina Type 743 Front Spoiler complete retrofit kit (new in box) $1200
71 60 6 770 096 WARNING TRIANGLE WITHOUT CONTAINER $40
51 16 7 028 437 & 438 MIRROR GLASS HEATED PLANE LEFT & RIGHT, ELECTROCHROM
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  #19  
Old 09-05-2014, 07:53 AM
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Doktorek Doktorek is offline
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Looks like it worked.
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Last edited by Doktorek; 10-30-2014 at 08:32 AM.
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