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  #16  
Old 06-16-2010, 10:18 PM
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Join Date: Jun 2010
Location: Bahrain
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wow..lucky you... 37 degrees?

I'm looking at 50 degrees everyday... My A/C is giving up on me, how can I make it colder on the W140!!!
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  #17  
Old 06-16-2010, 11:25 PM
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Join Date: Nov 2004
Location: North central Texas
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Quote:
Originally Posted by compu_85 View Post
The compressor cycles on my W126 at idle even, but the vent temp's aren't that great. I wonder if the evaporator is all full of dirt?

-Jason
Could be low on freon. Check the switch on the dryer.

Mine cycles from the evaporator temp being too low preventing freezing.
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  #18  
Old 06-19-2010, 10:21 PM
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Join Date: Sep 2001
Location: central Texas
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Most of these old cars have never had the Evaporator Fins cleaned...
people will replace everything else... and wonder why it does not really get cool...
Check out DMorrison's thread about what his looked like before he cleaned it...
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  #19  
Old 06-20-2010, 10:26 AM
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Location: Blue Point, NY
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Quote:
Originally Posted by Ether View Post
I'm referring to the SDL and yes it is 134 and yes it was 104 degrees. The air temperature on I 85 is always warmer than the ambient. It cooled off all the way to 99 when I got on the secondary roads near the house. It also felt like 104% humidity!
I agree with the conclusions regarding 134 in the SDL. I recently had the '86 flushed and filled with 134 and confirm 37 at the vent in 90 ambients.

However, the vent temps do climb immediately into the '50s once the rpm's drop below 1500. Stop and go traffic will result in a very quick application of the high fan speed to attempt to maintain cabin temperature. The system does this automatically...........quite sophisticated for a 24 year old analog system.

I'm curious as to the results of others in traffic with the same vehicle.
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  #20  
Old 06-29-2010, 10:00 AM
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Finally got around to sticking a thermometer in the vents and not surprisingly confirmed that I have pretty cold air coming out of there.

On my morning commute with the outside temp at a relatively low 83 degrees I get a frigid 34 degrees out of the center vent. Happily, in the evening with the outside temp hitting 101 I still see 40 degrees out which is still plenty cool enough to only require low fan speed to keep me quite comfortable.

Brian, my temp will rise slightly when I hit stop and go traffic but it does so slowly and frankly I wouldn't notice the difference if I didn't have the thermometer to tell me. Maybe a 2 -4 degree rise. Now, I don't typically sit in traffic for extended periods but there are a few miles of stop lights after I exit the Interstate on my ride home so it's probably not an extreme test of my system capacity.
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  #21  
Old 06-29-2010, 10:17 AM
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Join Date: Mar 2006
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I'm of the mind that a completely clean condenser along with working pressure switches and working fans along with a clean evaporator and a good proper 134 charge, in a 124 series or 85 and up 126 series, will result in good to excellent cooling in most climates.
try that in an older 126 or any 123, and you better not have much humidity or sunshine.
here in NC Piedmont area, most days are fine in the 126 with 134, but stop and go, and dead hot summer days, forget it. our climate rarely exceeds 93F (lately it's been topping 100 though!) but the humidity is often in the 80% and up range. that's HOT! I can't imagine LA,TX,GA,FL...
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  #22  
Old 06-29-2010, 01:06 PM
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Join Date: Jul 2007
Location: USA
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R12 is the better refrigerant out of the 2 but it harms the ozone. but what it is gonna be in the future cars, think europe is already doing it is will be better with R744.
http://www.r744.com/
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  #23  
Old 06-29-2010, 07:44 PM
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heh, to heck with the carbon footprint eh?
and the ONLY thing R12 harms is dupont's pocketbook.
the ozone hole has been around longer than freon has...
for damage to the ozone layer, think volcanoes...
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  #24  
Old 06-30-2010, 08:50 AM
LarryBible
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Originally Posted by vstech View Post
heh, to heck with the carbon footprint eh?
and the ONLY thing R12 harms is dupont's pocketbook.
the ozone hole has been around longer than freon has...
for damage to the ozone layer, think volcanoes...
vstech,

Don't muddle up his mind with facts.
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  #25  
Old 06-30-2010, 04:31 PM
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Quote:
Originally Posted by LarryBible View Post
vstech,

Don't muddle up his mind with facts.
haha
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