how cold should the AC be? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-31-2005, 05:08 PM   #1
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Default how cold should the AC be?

i let my car run for like 10 mins with the AC on max and the temp down to 60 and i got in the car and it was still hot? i even cracked a window to let the hot air out. i check the ac lines and their all sweaty so it the canistor that one of them goes into. how do i tell if needs to be recharged? it blows cold air but not cold cold. my wifes saturn is way colder after sitting 10min with the ac on and hers blows harder too.
so what temp should the air be when it blow out the vents?
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Old 05-31-2005, 05:10 PM   #2
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I believe after a certain amount of time the air coming out of the vents should be at 54-60F.... I think... Don't quote me on that... At almost 140,000 miles I'm lucky mine still works... And In florida of all places

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Old 05-31-2005, 05:11 PM   #3
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would one of those stick therm that u stick in the vents be some what accurate?
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Old 05-31-2005, 05:13 PM   #4
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Quote:
Originally Posted by L27Buick
would one of those stick therm that u stick in the vents be some what accurate?
I think thats how they do it... Put the thermostat in the center vent/*

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Old 05-31-2005, 05:21 PM   #5
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The correct way to tell is to measure the pressure at the low side of the AC system while also measuring the temperature of the air coming off the evaporator. You then look at a chart that will show you if the R12 or R134a is superheated (all gas) at that temperature and pressure... in the evaporator.

Ideally, on a hot day, you would want to be just hitting the superheat region. If you are well into superheat , then this means that you are running out of freon in the liquid phase (entering the evap), and the system could use more of a charge.
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Old 05-31-2005, 05:23 PM   #6
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Yep, the tstat would be a perfect idea.

If you have the Electronic Climate Control, jr's3800 is correct. I've got the Original A/C in my car, never been recharged or anything and mine is cold as can be. There is something to be said about the R-12 refridgerant and age. If ECC is what you have, put it on 60* [or your lowest temp setting], when the engine is cold. In a minute or two it should be at an awesome temp, or the A/C System may be malfunctioning. Since you bought the car over the Winter, did you ever test the A/C when you bought the car?


-justin
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Old 05-31-2005, 05:31 PM   #7
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when i bought the car i had them test it ac cuz if it didnt work i wasnt gonna buy it. but i guess they didnt test it.

do all dealerships have warrentys on the work they have done? i though the guy said they did but im not sure.

how can i test it my self with out paying the dealership price?
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Old 05-31-2005, 06:10 PM   #8
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Sounds like it is working. Probably just need a charge up.
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Old 05-31-2005, 06:12 PM   #9
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is their a level gauge or anything?
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Old 05-31-2005, 06:17 PM   #10
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no, the only gauges are the ones a qualified ac guy could put on there to check it
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