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Old 12-10-2011, 07:56 PM   #1
blue92
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1992 SL1
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Default Cabin Filter anyone?

Here is a good reason to have a cabin filter. Too bad the S series doesnt have one. I wonder if there is a way to rig up some kind of filter? Maybe, put a screen some where in where the fan is. At least it could be somewhat accessible.

Wonder how much it affected the ability to cool?

While I have this all apart, is there someway to backflush this thing? Also, is there any easy test for the TXvalve to ensure it is good? The AC wasnt working , but I think it was the compressor. I just want to make sure I check this out before I put it back together.

BTW, I didnt tear this apart to fix the AC, but figured I might as well inspect it while its out.
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Old 12-10-2011, 07:59 PM   #2
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Default Re: Cabin Filter anyone?

Guess it helps to include the picture.
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Old 12-10-2011, 08:59 PM   #3
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Default Re: Cabin Filter anyone?

Is the screen above the passenger side engine cowl still there? Shown in the attachment on this post.
http://www.saturnfans.com/forums/sho...42&postcount=5
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Old 12-10-2011, 11:33 PM   #4
blue92
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Default Re: Cabin Filter anyone?

It actually just came off when I went to the car wash. So, it is off but only for a short time. That crap on the evap coil has been building up for a long time by the looks of it.
I will put that screen back on. Still think it needs a proper filter though.
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Old 12-11-2011, 10:51 AM   #5
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Default Re: Cabin Filter anyone?

Yea that little screen is just to keep big debris out of the system and the foam is to keep the water out of the system and prevent leakage onto the foot well of the car.

Cabin air filter is a neat idea but doesn't seem worth it to me. Do you have a strong "out door" smell when you run your fan? Or do you have bad allergies that are aggravated when in the car? Seems to me that there is just leaf litter in your heater core which is nothing new that you're inhaling when you enter the car. I'd be more worried about the new filter getting wet and breeding mold and then when you run the fan you'll be inhaling all sorts of nasty.

Make a write up and take lots of pics, though. Others may be interested in it because of allergy issues etc.
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Old 12-11-2011, 11:10 AM   #6
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Default Re: Cabin Filter anyone?

Clean that evap core up and put it back in, should be good for many years. The normal condensate drain of the evap core typcially flushes a lot of that from the case, but there are times when they get depleted. There are foam products that can be sprayed into the Evap core while in the case to help flush this out.
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Old 12-11-2011, 06:30 PM   #7
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Default Re: Cabin Filter anyone?

I took it to the car wash and gave it a good cleaning. A lot of gunk came out . Im sure it had restricted air flow. If you look at these pics you can see that all air, whether its on AC or Heat must flow thru that evap coil. So if its getting plugged, you will not get good airflow, whether its on heat or cool. The back side of that evap has a foam screen, so nothing will get through. It will just get trapped inside the spaces and plug up.
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File Type: jpg evap0001.jpg (152.6 KB, 47 views)
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