Well this has been a problem since i bought the car a year ago.
its a 98 Z24.
When you turn the knob all the way over to defrost it turns the A/c on. Its not really a HUUGE problem but it bugs me.
I can turn it over to Def / floor mix and it doesn' come on.
I really hope its not designed to work like this.
Is it fixable easily? My thoughts were that the contacts were dirty or out of allignment in the switch. I think its supposed to turn on when you turn it to circulation mode right? Thats how my other Chevy is.
Brent
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My 03 comes on when ever I put it on defrost..
Most new small cars that I have test drove do this, something to due with the fact that the a/c takes the humidity out of the air, that way you have dry, warm air defrosting you windows, guess they figure thats better.
Turning on the defrost turns on the A/C compressor.
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extremefire wrote:Most new small cars that I have test drove do this, something to due with the fact that the a/c takes the humidity out of the air, that way you have dry, warm air defrosting you windows, guess they figure thats better.
^^^^^correct
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-MD- Z24 wrote:extremefire wrote:Most new small cars that I have test drove do this, something to due with the fact that the a/c takes the humidity out of the air, that way you have dry, warm air defrosting you windows, guess they figure thats better.
^^^^^correct
yep this use to be a little "trick" to help defrost windows, and now its just the norm.
you can do an AC delete if it bothers you that much.
The above is correct but it is also done to keep the seals lubed in the AC compressor during the winter months. This slows or stops the loss of refrigerant R 134 A from around the input shaft at the AC comp. Because every one will use there defroster at least once in a while in the cooler months of the year.
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chris orr wrote:The above is correct but it is also done to keep the seals lubed in the AC compressor during the winter months. This slows or stops the loss of refrigerant R 134 A from around the input shaft at the AC comp. Because every one will use there defroster at least once in a while in the cooler months of the year.
That's not the purpose for it coming on. And refrigerant is not suppose to leak (it's a sealed system) unless you have an open. And yes you need to turn on your a/c system every once in a while to keep it properly lubricated.
I dunno about you but all my refrigerant oil is leaking from the bottom of the compressor not the shaft. I don't see how it would leak from there seeing as it's a variable compression compressor. If you've seen one you'd understand.
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Hmm......
Sunfires rule! (Tom) wrote:And refrigerant is not suppose to leak (it's a sealed system) unless you have an open.
False. Freon leaks verrry slowly over time. It is not completely sealed, but is sealed good enough so that it will take about 15-20 years for you to even lose 1/2 lb. of Freon.
yeah it come on to pull humidity out of the air... just watch somethimes when you put it on defrost and floor with no a/c.. watch how long it takes your windows to clear up.
Now with the defrost on with a/c it clears up in a flash. and if its thats annoying just turn it on for a min or les to clear up window then switch it too defrost and floor (to save the penny in gas mileage.)
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extremefire wrote:Most new small cars that I have test drove do this, something to due with the fact that the a/c takes the humidity out of the air, that way you have dry, warm air defrosting you windows, guess they figure thats better.
Its not new cars, They've been doing this since AC was ever put in cars. My dads 72 cutlass does this. If it bugs you that much just unplug the wires from the AC compressor in the winter. Although its a good idea to leave it alone. Its good to "exercise " the compressor in the winter to keep it from getting locked up.
It doesn't bug me a whole whole lot i just thought something was broke.
But now that i know otherwise ill leave er alone. It just gets a lil nipply at 10 below zero with the a/c on
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did anyone else see that it seems like MiKeDiRnTRuLeZ quoted himself, then said what he quoted, AFTER he quoted himself?
MiKeDiRnTRuLeZ wrote:Hmm......
Sunfires rule! (Tom) wrote:And refrigerant is not SUPPOSE to leak (it's a sealed system) unless you have an open.
False. Freon leaks verrry slowly over time. It is not completely sealed, but is sealed good enough so that it will take about 15-20 years for you to even lose 1/2 lb. of Freon.
In 15-20 years you don't think that the seals can wear out.
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