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Air Conditioning Question

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Old Jun 22, 2005 | 09:25 PM
  #1  
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From: Fort Lauderdale, FL 140 & Still More Pedal
Default Air Conditioning Question

I have a 02 vert and the air is not coming out really ice cold. Can anyone recommend whether I should purchase the store bought can of gas w/ attached hose or invest in real A/C guages.

What should the lowside - highside read and which refrigerent do the C5's use.

Thanks,
Mike
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Old Jun 22, 2005 | 10:35 PM
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uses r134a, as do all cars made recently (my other car is a '94 and it too uses it as oppose to the old r112)

i've never messed with the high pressure side of things...I just put two bottles into the low side a few weeks ago after having the condensor off and all is cold now.
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Old Jun 22, 2005 | 10:56 PM
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Hi Mike
I recommend a set of gauges and a thermometer.

You need to find out what is wrong with the system before you risk over charging it (unless you already know the system has a leak...).
It may be nothing to do with the charge...

Having said that, and since you ask, charge is R-134a. My 2001 vert takes 0.68Kg or 1.5lbs to fill. Oil is GM PAG.

A/C air should be at about 50 degrees from the vents after 5 minutes full on with a window rolled down (90 degrees ambient, parked in the shade).
Low side should be around 30-35psi, High side can be anywhere from 160 to 270psi.

If you are convinced system charge is low, (an oil stain may appear where the leak is in the system) I would empty it (slowly as not to lose any more oil)
I would then refill with the correct amount of R134A that also contained a leak fix additive and see how it goes...

But then I might be wrong...I am sure other members will have some thoughts
Good luck

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Old Jun 23, 2005 | 12:38 AM
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Originally Posted by maskell
Hi Mike
I recommend a set of gauges and a thermometer.

You need to find out what is wrong with the system before you risk over charging it (unless you already know the system has a leak...).
It may be nothing to do with the charge...

Having said that, and since you ask, charge is R-134a. My 2001 vert takes 0.68Kg or 1.5lbs to fill. Oil is GM PAG.

A/C air should be at about 50 degrees from the vents after 5 minutes full on with a window rolled down (90 degrees ambient, parked in the shade).
Low side should be around 30-35psi, High side can be anywhere from 160 to 270psi.

If you are convinced system charge is low, (an oil stain may appear where the leak is in the system) I would empty it (slowly as not to lose any more oil)
I would then refill with the correct amount of R134A that also contained a leak fix additive and see how it goes...

But then I might be wrong...I am sure other members will have some thoughts
Good luck

Good recommendations, If there is a problem the gauges (hi and low pressure) will pinpoint it - and it may just need some R134a.
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Old Jun 24, 2005 | 12:33 AM
  #5  
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From: Fort Lauderdale, FL 140 & Still More Pedal
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Originally Posted by maskell
Hi Mike
I recommend a set of gauges and a thermometer.

You need to find out what is wrong with the system before you risk over charging it (unless you already know the system has a leak...).
It may be nothing to do with the charge...

Having said that, and since you ask, charge is R-134a. My 2001 vert takes 0.68Kg or 1.5lbs to fill. Oil is GM PAG.

A/C air should be at about 50 degrees from the vents after 5 minutes full on with a window rolled down (90 degrees ambient, parked in the shade).
Low side should be around 30-35psi, High side can be anywhere from 160 to 270psi.

If you are convinced system charge is low, (an oil stain may appear where the leak is in the system) I would empty it (slowly as not to lose any more oil)
I would then refill with the correct amount of R134A that also contained a leak fix additive and see how it goes...

But then I might be wrong...I am sure other members will have some thoughts
Good luck

Took it to a shop. Gauges displayed proper readings as you noted. Thanks for the advice. I guess thats about all I can do.
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Old Jun 24, 2005 | 10:39 AM
  #6  
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Originally Posted by probaja
Good recommendations, If there is a problem the gauges (hi and low pressure) will pinpoint it - and it may just need some R134a.
I agree w/both. The only difference and it is minor,, I put 1 drop of ref. oil on the pin prior to connecting the gauges to the system to make it easier to connect w/o damaging the o-ring seal. (and I also purge all the hoses of air.) 99 Nassau Blue
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Old Jun 24, 2005 | 04:46 PM
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Good news! at least the expensive stuff is working OK.

What are your air vent temps?

Dave
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Old Jun 25, 2005 | 12:40 AM
  #8  
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Houston is Hot and Humid. Under those conditions, A/C does not drop temp as much as it would in areas where temp and humidity are lower. On the worst days of summer, the a/c (on Recirculate) is cold, but not "ice cold". The temp drop created by the a/c is relative.

dave
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Old Jun 26, 2005 | 01:27 AM
  #9  
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From: Fort Lauderdale, FL 140 & Still More Pedal
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Originally Posted by maskell
Hi Mike
I recommend a set of gauges and a thermometer.

You need to find out what is wrong with the system before you risk over charging it (unless you already know the system has a leak...).
It may be nothing to do with the charge...

Having said that, and since you ask, charge is R-134a. My 2001 vert takes 0.68Kg or 1.5lbs to fill. Oil is GM PAG.

A/C air should be at about 50 degrees from the vents after 5 minutes full on with a window rolled down (90 degrees ambient, parked in the shade).
Low side should be around 30-35psi, High side can be anywhere from 160 to 270psi.


If you are convinced system charge is low, (an oil stain may appear where the leak is in the system) I would empty it (slowly as not to lose any more oil)
I would then refill with the correct amount of R134A that also contained a leak fix additive and see how it goes...

But then I might be wrong...I am sure other members will have some thoughts
Good luck

Can I put in a can of 134a even if the psi for the lo - high side is normal.
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