So I went through the AC system on my 2004 TSX yesterday. Took 11 hours to remove EVERYTHING, flush, replace desiccant filter (clogged up bad!), replaced compressor, expansion valve, and every oring in the system. When i drew a vacuum it held perfectly. Didn’t loose anything in 2 hours after shutting vacuum pump off. I then charged with 19oz of freon. Car blow ICE COLD, but only on fan levels 1-3. If I hit fan level 4, or 5 (max), it kicks the compressor off after about 1-2 seconds. So I ran the ac diagnostic and get no codes. I’m at a loss as to why when increasing the fan level above 3 the compressor cycles! It will stay on 3 and stay engaged no problem. Can I get some input from the community? Thank you. BTW my high side reading was perfect, low side was at 35, should have been a bit higher but don’t see the relation with the fan speed.

 

Did you ever resolve this? Was it any of the sensors? I have to take my car in to get the A/C fixed (I have to get the compressor and condenser replaced at the very least).