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2004 Forester XT 5 Speeds of Goodness
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475 Posts
Discussion Starter · #1 ·
So I have been dealing with the rattle-esque sound ever since I bought the car, figuring it would be a simple solution. I took out this thing (is it the heater core?) and cleaned it, hoping that would fix it, and as you can see, it looks almost new.

It didn't work. It did stop the rattle on "4" for my HVAC, but the sound was still there on "2" and "3". So I replaced my cabin air filter, hoping that would fix it. It didn't.
So here is a video with the sound, and I appreciate any advice/help you can offer me.
 

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2003 forester 2.0 xt at
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698 Posts
On "2" it allmost sounds like a little subaru on idle. But i would assume the bearing in the fan motor. Unless there is some serious leaf or something down there...
 

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2004 Forester XT 5 Speeds of Goodness
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475 Posts
Discussion Starter · #3 ·
Haha it kind of does! :biggrin: Nah there is nothing in the actual fan. I hope its not a bearing. These things aren't cheap to replace. You wouldn't happen to know compatibility of these things (07 heater thing works with an 04)?
 

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2004 Forester XT 5 Speed
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740 Posts
I know the HVAC controls from an SG9 are a direct swap to an SG5. not sure about other stuff.
Also, that's not the heater core. The heater core is a metal 'mini radiator in reverse'. It works like Air conditioning in reverse. Instead of using a fan to pull heat off the liquid making it cold, it uses engine heat to make the liquid warm to blow into the cabin.
 

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2005 Forester XT 4EAT
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83 Posts
That fan assembly is called the blower motor. It sounds to me like the blower is hitting the case somewhere, or the bearing in the bottom is bad. I have a home air purifier that sounds just like that, and I'm almost certain the bearings are dirty/shot.
 

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Smooshed FOTY 2011
2005 Lifted 2.5 XT 5-Speed MT Dual-Range
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5,732 Posts
When it's really cold outside, mine makes squeaks and rattles too just like yours. I have a replacement blower assembly from a parts car, just need to get in there and change it.
 

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2004 Forester XT 5 Speeds of Goodness
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475 Posts
Discussion Starter · #8 ·
What year did you pull out the replacement? Same year or... There's a couple of 06's at the junkyard that I could get one, but I don't know if it will fit
 
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