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AC blows hot air?
On my 1992 318is, the AC seems to blow hot air. Hotter air than the outside normal temperature air.
I have the climate control stuff turned to the coldest, on both sides. The compressor seems to work fine, when I turn the AC button on, I can hear the compressor 'click' on. I also checked and I can see the compressor belt spinning... What could it be? I'd like to check the refrigerant but have no clue where the "sight glass" for it is located. Any ideas?
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2014 Porsche Cayman S 2001 BMW 525i Touring 1996 Porsche 911 (Gone to Germany) '86 911 Carrera (Gone to Aruba) |
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09-18-2003, 08:34 PM
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Ok, I have a huge correction to make...
The AC does not seem to just blow 'hot' air. I just took the car out at night, its 70-74 degrees outside. With the AC off and the fan blowing full, the air is a little warmer than outside air. Feels like 75-77 degrees or so blowing out of the fan. Now, with the AC on, it's the same exact thing. You can tell there is no cooling happening, but its *not* heating up the air either. Soo..the compressor 'clicks' on, I can see the belt spinning, the AC light is on...but the air isn't really being cooled. If I knew where the 'sight glass' was, I could do a quick check for R12 or whatever this car uses.
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2014 Porsche Cayman S 2001 BMW 525i Touring 1996 Porsche 911 (Gone to Germany) '86 911 Carrera (Gone to Aruba) |
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09-18-2003, 10:25 PM
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Join Date: Aug 2001
Location: Palos Verdes Estates, CA
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If it is a 92 - it uses r12. If your compressor clicks on, belt spins, and AC light is on while the air that comes out is pretty much the same as with the ac off - you need more refrigerant. I had heard many horror stories that my cousin told me about his friends have $$$$ problems with their e36 AC. Turns out I just needed some more r12 - cost me $50 to have it professionally filled. And now i'm living in the cool lane.
To verify what AC type u have, just open the hood and look to the sticker on the frame below the washer fluid. You'll see r-12 most likely (i also have a 92). Good luck
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1997 M3 Sedan 5spd Artic Silver/Dove M3 Bumpers/Mirrors/Sideskirts S52 3.2L, M3 Wheels, M3 suspension, M3 Brakes Oh wait...it's a stock M3 |
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09-19-2003, 01:27 AM
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In the shop at Pelican
Join Date: Aug 2002
Location: Los Angeles, CA
Posts: 10,459
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Sounds liek tis just a low refrigerant charge.
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09-19-2003, 03:50 PM
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Join Date: Sep 2002
Location: Stellenbosch, South Africa
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also check that the rotating wheel on the centre dashboard vent is turned towards the blue dots.... (for cold air). In the centre/red dot area it mixes in ambient/hot air to control temp to the setting on the a/c control. Mostly, it looks like your refrigerant is low. Should be R12 on a '92. Get the tech to look for leaks, or you might have to refill again soon.
LeRoux
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'90 964 C2 coupe (sold  )There are no old Porsches, only new owners. |
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09-23-2003, 09:28 AM
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I'm actually trying to figure out if any of the PO's has already converted this car to R134a instead of the stock R12. If so, that'll be a money saver..
Anyway to find out if it is already converted?
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2014 Porsche Cayman S 2001 BMW 525i Touring 1996 Porsche 911 (Gone to Germany) '86 911 Carrera (Gone to Aruba) Last edited by moazam; 09-24-2003 at 12:05 AM.. |
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09-23-2003, 02:26 PM
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Sucks, it's still R12, what a pain...I might as well convert to R134a. :/
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2014 Porsche Cayman S 2001 BMW 525i Touring 1996 Porsche 911 (Gone to Germany) '86 911 Carrera (Gone to Aruba) Last edited by moazam; 09-24-2003 at 12:04 AM.. |
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09-23-2003, 03:32 PM
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1986 Porsche Carerra 3.2
