AC Unit Cover Broken
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RE: AC Unit Cover Broken - 6/30/2008 7:53:17 AM
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portcqb
Posts: 344
Joined: 3/13/2008
Status: online
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Well its covering the a/c box and the heater box so you need to keep something there unless you dont want a/c or heat. Did it have an accumulator failure at some point the whole area looks as if it was sprayed with refridge that is eating away at metals and covering everything in pag oil.
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1997 Olds Bravada AWD 4.3L Auto ~34,600mi(high idle time)
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RE: AC Unit Cover Broken - 6/30/2008 8:49:50 AM
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scottlanz
Posts: 3
Joined: 6/25/2008
Status: offline
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My ''99 blazer is doing the same thing. Except that mine is almost gone. It has literally just crumbled into pieces. (Which is maybe why I am having a/c problems????)
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RE: AC Unit Cover Broken - 6/30/2008 9:50:53 AM
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dBsound
Posts: 82
Joined: 2/27/2007
From: Bloomington, IN
Status: offline
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My 95 disintegrated too. Thank god that POS is long gone(it''s so funny. I read about all these issues with the older models, I had ALL the issues).
Anyway, I have a perfect AC housing from my totalled 1998 Jimmy, if you''re interested. The non-crumbling version!
I wish our profiles listed our locations on this site. So when we were going to buy or trade parts, we''d have an idea about how difficult/expensive it would be.
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2001 Jimmy 4WD
1998 Jimmy Partsmobile!
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RE: AC Unit Cover Broken - 6/30/2008 9:57:31 AM
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swartlkk
Posts: 13651
Joined: 5/1/2005
From: Waterloo, NY
Status: online
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quote:
ORIGINAL: dBsound
I wish our profiles listed our locations on this site. So when we were going to buy or trade parts, we''''''''d have an idea about how difficult/expensive it would be.
It does if you fill out the information in your profile...Its the ''From:'' field...
< Message edited by swartlkk -- 6/30/2008 10:06:59 AM >
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Kyle-
2004 Rainier
1970 Chevelle - Resto
1974 K5 Blazer - Resto
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RE: AC Unit Cover Broken - 6/30/2008 3:36:42 PM
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BlazinBeam
Posts: 8
Joined: 6/29/2008
Status: offline
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Well I was reading through the Haynes book after I posted this and I found an interesting entry when servicing the blower you have to cut the "Cover" as they call it away with a knife. Once you cut it away you can access the bolts holding the blower fan and motor in place. Everything they are showing makes it sound like it is just a dirt and grime cover to make the compartment look better.
Please let me know if I am wrong because I am thinking about removing it completely. maybe I will replace it with someone like dbsound''s suggestion.
As far as A/C issue I do have a problem. The system will not hold a charge for more then 2 days. if I charge it the thing cools like a champ but after a few days there is no more cooling. I don''t think the leak is coming from inside the cover though. it looks like it is in the return line a little lower. I have to get some die and test it. What you are seeing that looks like a blow back is probably the engine cleaner that I put on it. I just cleaned and degreased the engine shortly before I took the pics. if anyone has any more feed back it would still be greatly appreciated. Oh and the heater still works like a champ. To good. You all know as well as me that these beasts like to run hot! hehe.
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RE: AC Unit Cover Broken - 6/30/2008 4:58:56 PM
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portcqb
Posts: 344
Joined: 3/13/2008
Status: online
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From what ive read you need to put that cutout back in after a blower motor change. They say to glue it back before using the blower. If you think about it with holes in the cover you are sucking up all heat, smells, and possibly CO that is under the hood and blowing it straight into the cab. You could probably make something yourself to cover the blower, ac coil, and heater box up if you dont want to pay for the actual piece of plastic.
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1997 Olds Bravada AWD 4.3L Auto ~34,600mi(high idle time)
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RE: AC Unit Cover Broken - 6/30/2008 5:25:58 PM
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BlazinBeam
Posts: 8
Joined: 6/29/2008
Status: offline
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I will replace it with the proper piece if the cover is necessary but the problem is the bottom of the cover is cracking just like the top. I am not sure the part can be replaced without taking a bunch of junk out before hand? What a pain in the butt.
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RE: AC Unit Cover Broken - 6/30/2008 10:54:49 PM
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dBsound
Posts: 82
Joined: 2/27/2007
From: Bloomington, IN
Status: offline
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Guys, how much is this thing worth? As usual, I have no idea!
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2001 Jimmy 4WD
1998 Jimmy Partsmobile!
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RE: AC Unit Cover Broken - 7/2/2008 10:31:13 AM
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BlazinBeam
Posts: 8
Joined: 6/29/2008
Status: offline
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I talked to a GM factory mechanic today who said the part is not needed. When ever they service the A/C units on the older S-10 models and the cover is crumbling they crumble it up and remove it. The 4 cylinder P/U models have the blower and A/C components in the same location and it does not have the cover. I read it in my haynes manual and got conformation from the GM mechanics. Just thought I would pass this info along. The heat shied that is on the bottom side of the components on the other hand is very necessary.
Thanks for the effort dBsound but it appears the part is not necessary after all. Atleast that is the way I am taking it so I am going to remove it and see how it functions.
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RE: AC Unit Cover Broken - 7/2/2008 2:47:50 PM
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dBsound
Posts: 82
Joined: 2/27/2007
From: Bloomington, IN
Status: offline
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Please keep us updated, because if it''s not a necessary part, it can go to the dump!
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2001 Jimmy 4WD
1998 Jimmy Partsmobile!
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RE: AC Unit Cover Broken - 7/2/2008 3:19:39 PM
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portcqb
Posts: 344
Joined: 3/13/2008
Status: online
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Repair guides on autozone say to replace the cutout and screw and seal in place after blower service. I think that motor is open ie not water proof. Doesnt the 4 cylinder have a rigid plastic box that the blower attaches to so only the sealed portion shows when looking at it. It up to you whether you want to do something about it anyway, Im not sure I would trust too many gm mechanics one said I had a bad fuel pump when it was an ignition switch another said that dexcool could be mixed with traditional coolant. Maybe the gm dealers around me are just bad.
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1997 Olds Bravada AWD 4.3L Auto ~34,600mi(high idle time)
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RE: AC Unit Cover Broken - 7/2/2008 6:15:16 PM
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swartlkk
Posts: 13651
Joined: 5/1/2005
From: Waterloo, NY
Status: online
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If this is just the plastic insulator cover for the HVAC box, then it is unnecessary. System performance, pertaining to the A/C, may be slightly less, but it will not introduce harmful fumes into the cabin.
Now, if your main HVAC core box is busted up, then yeah, you shouldn''t run around with it like that.
And the multi-layer aluminum heat shield at the bottom is definitely necessary. Without it, your heater core would be compromised by the heat of the exhaust manifold and y-pipe.
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Kyle-
2004 Rainier
1970 Chevelle - Resto
1974 K5 Blazer - Resto
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RE: AC Unit Cover Broken - 7/2/2008 8:56:51 PM
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BlazinBeam
Posts: 8
Joined: 6/29/2008
Status: offline
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Well I will keep everyone posted on the progress but the A/C fix is on hold. I took the beast out today with die in the A/C unit to see where my leak is and my water pump or something near it started to hemorrhage coolant. I have to get this problem fixed before I can move back on to the A/C unit. I will not be able to rip it down and see where the leak is till early next week so it will be a week or so for the final conclusion on the A/C. Hopefully this coolant set back is the last of the surprises. I think it will be but who know!
And swartlkk it is just the plastic insulator cover that is crumbling away. Everything else so far appears to be top notch. Hell the blower casing and motor look like brand new. I guess that wont stay that way once the cover is completely remove.
PS: to everyone. The Mechanic said to keep the information sticker that is on the top side of the cover because it has some necessary info.
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RE: AC Unit Cover Broken - 7/26/2008 8:28:06 PM
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Blazer4U
Posts: 21
Joined: 7/15/2008
Status: offline
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Just replaced the water pump on my blazer after replacing the intake gasket. The blade inside the water pump had broken free from the shaft and was just in there free-wheeling. Guess that''s not too bad for a water pump that lasted 244,000 miles.
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1995 Chevy Blazer 4.3L CPI VIN:W - How To Repair
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