A/C well Lack there of

A

Adam_Dawg78

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Over the winter I posted problems about having no heat. I replaced my temp gauge, degas bottle and finally DCCV and finally fixed the heat issue. Well now the south is heating up and we went to turn the A/C on but only got HOT air. Ive checked fused, done the front dash display test and can't find anything wrong.

My guess is it might need a Freon recharge. I wanted to see if anyone knew how to test the pressure. Ive searched and searched and found all kinds of post but people more than less just discourage it. I have the tools and just want to check and see if it is actually just the Freon and not something more.

Car
2002 LS V6

I mention the 2002 because ive read the lower port is behind the front driver side tire, but another thread I read said on the 2002 models they moved it to he accumulator or somewhere like that.

So if you can help me with where to locate both ports, what pressure to look for and if low advice on recharging.

thank you
 
The lower port is near the compressor, behind the lower splash shield. I would check the compressor for a leak. These compressors don't like not to be run.
 
I totally agree about letting someone else recharge the a/c. But I would like to test it and see if that is infact what the problem is. Does anyone know the steps to take to test the system? what tools, what psi should I have? Etc.
 

The A/C Does Not Operate/Does Not Operate Correctly



NOTE: should really take it to an A/C specialist for this kinda work, you can easily end up doing more harm then good.





and the never read, boring, small print -


CAUTION: To avoid damaging the vehicle or A/C components, the following precautions must be observed:

The A/C refrigerant of all vehicles must be identified and analyzed prior to refrigerant charging. Failure to do so can contaminate the shop bulk refrigerant and other vehicles.

Do not add R-12 refrigerant to an A/C system that requires the use of R-134a refrigerant. These 2 types of refrigerant must never be mixed. Doing so can damage the A/C system.

Charge the A/C system with the engine running using the low-pressure side of the A/C system.

Use only R-134a refrigerant. Due to environmental concerns, when the air conditioning system is drained, the refrigerant must be collected using refrigerant recovery/recycling equipment. Federal law REQUIRES that R-134a be recovered into appropriate recovery equipment and the process be conducted by qualified technicians who have been certified by an approved organization, such as MACS, ASI, etc. Use of a recovery machine dedicated to R-134a is necessary to reduce the possibility of oil and refrigerant incompatibility concerns. Refer to the instructions provided by the equipment manufacturer when removing refrigerant from or charging the air conditioning system.

Refrigerant R-134a must not be mixed with air for leak testing or used with air for any other purpose above atmospheric pressure. R-134a is combustible when mixed with high concentrations of air and higher pressures.

A number of manufacturers are producing refrigerant products that are described as direct substitutes for refrigerant R-134a. The use of any unauthorized substitute refrigerant can severely damage the A/C components. If repair is required, use only new or recycled refrigerant R-134a.



BTW: it's not Freon
 
Adam_Dawg78 said:
I totally agree about letting someone else recharge the a/c. But I would like to test it and see if that is infact what the problem is. Does anyone know the steps to take to test the system? what tools, what psi should I have? Etc.
Click to expand...

You need at least a set of pressure gauges. These aren't great, but there as cheap as you are going to get.
http://www.harborfreight.com/a-c-manifold-gauge-set-92649.html

The pressures to look for are:
http://deneau.info/ls/s6x~us~en~file=s6xc0006.htm~gen~ref.htm
 
Listen to Joegr. I just went through this. I Listened to him, and ended up saving myself a pot full of money. whatever he tells you to do or check. trust me, just do it. :)
 
Dupont trade name for R134-a is Suva, replaces the old DuPont trade name for R-12 (Freon). Also, on my '02 V6 the low side port is on the compressor.
 
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