A/C fans dead - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-16-2004, 09:25 AM   #1
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Default A/C fans dead

I have recently picked up a 92 SE, and yesterday tried using the A/C for the first time. I hadn't thought to mess with it yet (my mistake). When I tried, I found the fans don't work. I can feel hot and cold air (depending on the temp ****) seeping out, but there'* no air flow.

I have no manuals for the car (any suggestions on where/what to find would be nice too, 3 parts store searches have proven fruitless), so I'm not even certain where to start looking. Bad weather right now is preventing me from doing much digging, so I'm more looking for things I should look at for later this week.
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Old 03-16-2004, 09:34 AM   #2
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Default Fan Broken

My 94SE did that last year and it ended up being the fan relay on the realy rail in the engine compartment. Somewhere on the forum there is a post syaing which relay it was. I just can't remember but I got a replacement from the local Advance Auto for about $20.00.
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Old 03-16-2004, 12:23 PM   #3
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You need to check for power at the fan motor with the climate control on High.
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Old 03-16-2004, 02:01 PM   #4
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Quote:
Originally Posted by willwren
You need to check for power at the fan motor with the climate control on High.
Even before that, get the car running with the blower control cranked to High, and try just thumping the blower motor housing with a broomstick or similar. (You know where to find it under the hood, yes?)

If it suddenly springs to life, you might get away with just cleaning and oiling it (or replacing it at worst). After you remove it, you have some access to the bearings through a couple holes in the side of the motor, and blasting some carb cleaner in there to clean the armature and brush assemblies, followed by a few drops of light oil on the bearings, can work well.
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Old 03-16-2004, 03:32 PM   #5
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Quote:
(You know where to find it under the hood, yes?)
Nope I've never done environment system work on any car, so I don't really know what to look for. I'm sure thumping on random engine parts is not a good idea either Best guess is it'll be along the firewall?

I could stand to have some kind of tear-down guide (Haynes, etc.) but am having a hard time locating one. Any suggestions here would be appreciated too.
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Old 03-16-2004, 03:38 PM   #6
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Chiltons #28200.

Fan shroud is the bulge in the firewall behind the rear exhaust manifold.
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Old 03-16-2004, 06:26 PM   #7
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Quote:
Originally Posted by willwren
Chiltons #28200.

Fan shroud is the bulge in the firewall behind the rear exhaust manifold.
"Fan shroud"? Actually I would just take a look at WillWren'* engine-bay photo above. See the large "3800"? Look on your firewall directly behind that: about halfway down you should see a round black motor housing sticking out a few inches, about the size of a Campbell'* soup can. That'* your blower motor.
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Old 03-16-2004, 10:37 PM   #8
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Quote:
Originally Posted by LordBug
I could stand to have some kind of tear-down guide (Haynes, etc.) but am having a hard time locating one. Any suggestions here would be appreciated too.
Got mine at O'Reilly Auto Parts, $15.99 or so. Don't know how widespread O'Reilly'* are though.

-b
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