2005 nissan maxima AC Problems

[spuka02]

Hi there is anyone familiar with 6th generation Nissan Max AC ? I live in New York City my car AC has quit working recently even though i took it to a mechanic shop 4 months ago at the begining of the summer to put the ac gas and it was working fine until now i change the in cabin air filter when i did the job because the mechanic told it was dirty .

The car only has 64,689 miles on it i don't think it is the ac evaporator but i would like to have an idea, air does comes out of the vents but the air is warm at best or hot if i put the heat but it never gets cold anymore and i hear a constant sound when i turn on the ac . I would like to thanks anyone in advance for their comments and opinions .

[loystock]

Why did you recharge the freon? From my experience, Nissan/Infiniti AC last for a long time (all of our cars have original AC, never been re-charged). Improper servicing can cause problem. It's possible that you have a leak. Check the low side - line between the evaporator and the compressor and pay close attention where rubber meets metal. If there is oil or grime you have freon leak and requires professional service (the system must be evacuated first before the defective component can be replaced. It is illegal to discharge freon to ATM). If you see bubbles on the view port (usually on the dryer area), you have low freon charge. An AC Manifold Gauge will help in the diagnostic. Again, the leak must be identified first and repaired. If the system has been 'broken' (lines disconnected), it is advisable to replace the dryer as it could have been saturated with water vapor.

[NutriaforBreakfast]

Info in this website under technical articles;

http://www.nicoclub.com/archives/air-co ... finit.html