Originally Posted by
shogun
Wonderful words of wisdom around checking your AC system through the inspection-glass beside the charge ports;
If you see only a few bubbles going by it's probably fairly full and not your problem.
If it's clear your system is either empty or over full. If you know the system is full you should see at least one bubble go by per second.
If no bubbles at all your system is overfull. If your familiar with AC pressure gauges you may connect them at the above valve locations and
check for excessive pressures from over charge.
See that the auxillary fan is working in front of the condenser. It will be on whenever the compressor is engaged.
If the fan does not come on with the compressor the most common problem is a faulty resistor which is located on the frame of the fan.
If the resistor has continuity then you may have another problem with the fan itself, relay, fuse etc which is beyond what I wish to cover here.