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Head unit cooling

Old Nov 1, 2002 | 11:45 PM
  #1  
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Head unit cooling

Anyone else ever have heat problems when using your heater. with the onslaut of cold weather it only takes about 20 mins of the heat on high and im setting off heat error codes. I can run it on low speed much longer but im not allways warm enough.

I thought about a fan but there is not much room back there.

pioneer DEH-P4000
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Old Nov 2, 2002 | 02:37 AM
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Are you running your speakers off the deck too?
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Old Nov 2, 2002 | 11:05 AM
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From: Dirty Jersey
Interesting question... and I have an interesting solution, which could work. I haven't tried this, it's theoretical, so work with me here.

If you have a 1-DIN unit, get a GM adapter plate that allows you to put a 1/2-DIN unit below it. They can be found at Pep Boys (where I got mine); they should come in a package with other GM adapter plates. I'm sure you can find them elsewhere, too. The fan will be tricky because of the power supply, but you can fit a computer exhaust fan there.

The problem is getting the correct power to it. Computer components run at ~3.5 volts, while car batteries push ~12 volts. So you just have to figure out how to adapt the power.
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Old Nov 2, 2002 | 01:39 PM
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Originally posted by TrueBlue91RS
Are you running your speakers off the deck too?
yep, I also am using my sub outs.
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Old Nov 2, 2002 | 01:48 PM
  #5  
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Originally posted by CaysE
Interesting question... and I have an interesting solution, which could work. I haven't tried this, it's theoretical, so work with me here.

If you have a 1-DIN unit, get a GM adapter plate that allows you to put a 1/2-DIN unit below it. They can be found at Pep Boys (where I got mine); they should come in a package with other GM adapter plates. I'm sure you can find them elsewhere, too. The fan will be tricky because of the power supply, but you can fit a computer exhaust fan there.

The problem is getting the correct power to it. Computer components run at ~3.5 volts, while car batteries push ~12 volts. So you just have to figure out how to adapt the power.
do you have a pic of your system with that new plate???

I dont think my 86 has enough room.


My stero has only done it a few time in the heat of summer but only cause I had the car parked in the sun jamming tunes while we worked.

Guess i should also say the heat alarm/error code only affects the CD player, I can run the radio fine but once it gets too hot it takes a while before the CD will play again.
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Old Nov 2, 2002 | 03:39 PM
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Originally posted by Gumby
yep, I also am using my sub outs.
Using the sub outs isn't be a problem. But running the speakers off the head unit is a major contributor to the error codes you're experiencing. The internal amp in the head unit begins heating up as soon as the speakers are turned on and the heater is making it worse. You could try insulating around the heater conduits, or putting in a fan may work as well.

Alternatively, you could hook your speakers up to an external amplifier. Not necessarily a cheap solution, but one that also gives you a marked improvement in sound quality and volume.
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Old Nov 2, 2002 | 04:50 PM
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Car: 1992 Firebird
Engine: 3.1 V6
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Originally posted by CaysE
The problem is getting the correct power to it. Computer components run at ~3.5 volts, while car batteries push ~12 volts. So you just have to figure out how to adapt the power.
a computer case fan is 12V
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Old Nov 2, 2002 | 07:20 PM
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Originally posted by TrueBlue91RS
Using the sub outs isn't be a problem. But running the speakers off the head unit is a major contributor to the error codes you're experiencing. The internal amp in the head unit begins heating up as soon as the speakers are turned on and the heater is making it worse. You could try insulating around the heater conduits, or putting in a fan may work as well.

Alternatively, you could hook your speakers up to an external amplifier. Not necessarily a cheap solution, but one that also gives you a marked improvement in sound quality and volume.
its only the cd player that gets hot, the radio will work just fine.
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Old Nov 3, 2002 | 02:40 AM
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Originally posted by Gumby
its only the cd player that gets hot, the radio will work just fine.
Right, but the radio doesn't use any moving parts while the CD player does.
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Old Nov 3, 2002 | 10:15 AM
  #10  
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From: Dirty Jersey
Originally posted by Freeze
a computer case fan is 12V
Woops, my bad. Those fans do run on 12 volts. And that makes it easier for all of us. All that's left is to wire it in; you just have to know which wires are + and -.

Gumby: I don't have a picture of it; I haven't used that plate yet. I know a couple people have this setup, and your car should work fine with it. It looks like there isn't much room, but there's enough.
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Old Nov 3, 2002 | 10:32 AM
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^ sounds like a phony
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Old Nov 3, 2002 | 10:39 AM
  #12  
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From: Dirty Jersey
Originally posted by camaro6spd
^ sounds like a phony
LoL... come on, over 2000 posts here and you've never heard of or seen these plates? Go to Pep Boys; they come in a package with other plates. It's like 20 bucks or something.
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Old Nov 3, 2002 | 04:59 PM
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From: Lowell, MA
Car: 89 Camaro RS
Engine: sbc 400
Transmission: th350
the plate he is talking about is just the mounting kit. metra makes the best, and yes, they do supply in the kit a mount that allows for a single din and a 1/2 din (like an eq). i owned one myself. his idea is to modify it so that you can use the 1/2 din spot for a fan. good idea, but i wouldnt do it myself just because it would add more (although only a small amount) noise competing with my music. but, it is an interesting idea. so no, he's not lying oh, and i'm sure there's a pic or two of one of these kits in my link.....
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