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Old 11-05-2014, 01:28 PM   #43
CoupedUpSubie
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Quote:
Originally Posted by billwot View Post
High side operating pressure for a 134A system will typically be around 200-225 on a 90F day. But the low side will still be about 30, so the actual pumping load (pressure differential across the compressor) will be about 175-200. The system high pressure switch is probably set at 250, maybe 300.

I agree with the rest of your post.
I had a feeling that number was a bit high, been a while since I've done any real refrigeration system work.
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Old 11-05-2014, 05:11 PM   #44
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This IS the most obnoxious feature of the car I swear.. My AC pump is turning on and off constantly just from having my fan on in the car. Changing which vents to use didnt seem to change the outcome. I wish I could disable this..
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Old 08-18-2015, 08:03 AM   #45
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Threeeeaaaaaaad necro!

Just found out this (idiotic) "feature" today after a year of owning the car (my wife and I share it) :\

Thanks for the replies - running AC all the time is also bad for your vents; after each use of the AC, condensation occurs inside the vents and over time the cyclic condensation can/will create mold. I've always been told that it's a good idea to run the fan w/o AC for a few minutes after using the AC for a day.

Has anyone figured out how to disable this? My "go to" setting for cars is having the fan on blowing air to my feet & the windshield
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Old 08-18-2015, 12:20 PM   #46
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Thanks for the replies - running AC all the time is also bad for your vents; after each use of the AC, condensation occurs inside the vents and over time the cyclic condensation can/will create mold. I've always been told that it's a good idea to run the fan w/o AC for a few minutes after using the AC for a day.
Never heard that before. Lived in Texas all my life and have never had mold issues in the vents. My AC is on 100% of the time for probably 10 months out of the year.
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Old 08-18-2015, 12:37 PM   #47
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Yes this is true, but its not that 'big' of a problem. This will happen by like 10yrs of ownership. What I do is I run it without the a/c kicking in, just air, let it dust out a bit, then turn a/c on, drive, and 3-5min before I get to my destination, just run air and ultimately turn it off.

Also, i'm an@l about this but when I clean my interior I attach a small pipe to my vacuum and place it inside vents. I like being inside my car to ensure its clean as best as possible. Especially when it blows air at my face full of dust. I live in a rural and dusty area. The little pipe used to have a brush you could attach, but I lost it.
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Old 08-18-2015, 12:45 PM   #48
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This has gotten my attention.


I often feel a "stumble" or hesitation, under mild acceleration.


I had attributed it to the AC being ON, so I have done some experiments with the AC "Off" and seemed to still notice it occasionally.


Now that I know that "Off" might not be truly "OFF", I need to do some more experiments.
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Old 08-19-2015, 12:07 AM   #49
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Quote:
Originally Posted by Hawaiian View Post
it's not to preserve lifespan, but rather to give you full power under WOT.


Could be for lifespan too-- a compressor that can work well at 2.5K might not tolerate 7K for very long.
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Old 08-19-2015, 01:10 AM   #50
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Annoying that the AC light stays dark even though the compressor is running in defog mode. Where I come from, "off" means "off"
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I hear that from women all the time. So depressing.
Shit, I'm funny.
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Old 08-19-2015, 02:22 AM   #51
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Shit, I'm funny.
hahahahahah
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Old 08-19-2015, 02:38 AM   #52
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hahahahahah
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