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Thread: Cooling the CD Deck (weird)

  1. #1
    Join Date
    Jun 2006
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    Frederick, MD
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    254

    Default Cooling the CD Deck (weird)

    Well, since Qsilver7 did such an awesome job on my last stupid question, here is an every weirder one.

    I live near Washington DC, and for about 2-3 months out of the years it gets hot as hell here. When the temps gets much over 90 my 6-CD deck in the trunk starts throwing Err codes at me. It says right in the manual for the deck that this is caused by over heating and to just "listen to something else for a while" Needless to say this is a bit annoying.

    Rather than just replace it, I was wondering if anyone had any ideas about where I could pull off a small duct line from the AC vents that supply the back seats, and have it blow discreetly on the deck. I don't think it would take a LOT of cold air to keep it in range, any fresh air in that closed envirnment has got to help.

    I want this car to stay as original looking as possible, so whatever I do it has to be totally inconspicuous. I was thinking about trying to find some flexible plastic vent type stuff that was maybe 1.5 inches by 1/2 inch, easy to sneak it around unnoticed.

    Like I said, this may be my dumbest question yet, but I appreciate any sugestions you have.
    1990 535i
    117,000mi
    Feederick, MD

    If it has **** or tires, you are going to have problems.

  2. #2
    Join Date
    Mar 2005
    Location
    dublin, ca
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    479

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    actully I have a good idea... in the trunk in the side where the factory amp is theres a flap that alows water to get out of your trunk if you get flooded. SO mabe you could rig up a airduct that makes outside air circulate in the trunk... just an idea.

  3. #3
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    You could try heatsinking it. Strap a couple 1/4" piece of aluminum to the housing of the cd changer, see if that helps.

  4. #4
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    USA
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    i remember seeing a post of someone hooking up 2 120mm 12V computer fans, and making a little enclosure out of something around the changer, so one would blow in, with a vent going to the panel above the back seat, and the other would blow out, into the truck.

    apparently it worked perfectly.
    Alusil, Dinan DME | ITG Air Filter | Eibach/Bilstein HD | 26/20 Swaybars | Iridium plugs | Depo/ProLumen HID | Optima batt. | no AC | Stoptech brake lines, Frozen rotors, brass bushings, Superblue

  5. #5
    Join Date
    Mar 2005
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    Hockinson, Washington
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    Quote Originally Posted by Jon K
    You could try heatsinking it. Strap a couple 1/4" piece of aluminum to the housing of the cd changer, see if that helps.
    I agree, this situation could probably be brought under control through the use of passive cooling devices. Find some old computer heatsinks and attach them to the device in question.
    Lowered with blue h&r(?) springs, Bilsteins, tint, 19# design 3 injectors, Dual Magnaflow
    southwest WA

  6. #6
    Join Date
    Jan 2006
    Location
    San Francisco, CA
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    the cooling situation in the trunk is horrible and i as well as friends have had trouble with things over heating. There are holes under the rear deck so it seems that bmw wanted heat to flow out of these and cold air come in through the vents pyro mentioned. I actually watercooled my amps but thats a bit exotic, passive cooling could probably help.

    find the side that the electronics are attached too any transistors and things that produce heat are probably heat sunk to that side of the case already. Get yourself a low profile heat sink and some thermal epoxy, stick on and heat up.

    But all this is going to do is spread out the heat in an already broiling trunk. If you want to hook up a fan it would be easy as you already have ground and turn on leads going to the cd player, constant at the amp if you feel the need for a relay.

    One other idea as this is only for a few months, take the wood/carpet back of your trunk out for the sumer. Get a hammer or a foot or a big rock and punch out the perferated metal for the ski bag. The flap is held on by velcro, leave the arm rest down. Yes this is half assed but does not really modify anything and will help.

    ~Tyler

  7. #7
    Join Date
    Mar 2006
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    There is a trunk vent, its on the left side if I remember correctly. it has a flap on it that can get stuck, dig arround behind the carpet until you find it and make sure its not stuck closed. then just turn on the ac and it will cool the trunk after a bit.

  8. #8
    Join Date
    Jun 2006
    Location
    Frederick, MD
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    Thanks all, I will look for the vent first. Is it on the side wall or on the back of the seat?

    If all else fails I like the fan idea, one to pull cooler air into the trunk from the cabin, one to blow out the hot.
    1990 535i
    117,000mi
    Feederick, MD

    If it has **** or tires, you are going to have problems.

  9. #9
    Join Date
    Jan 2006
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    San Francisco, CA
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    just pretend your replacing your left or right parking light, the right will be easier to see because the amp is not in the way. Now look down into the hole and you should see the plastic rectangle with a few rubber flaps on it.

  10. #10
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    Jun 2006
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    Frederick, MD
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    I think I understabd, but if anyone has a pic it would be greatly appreciated. No big hurry, the temp here is supposed to stay under 90 all this week here. :0
    1990 535i
    117,000mi
    Feederick, MD

    If it has **** or tires, you are going to have problems.

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