I replaced the compressor and evaporator 1 year ago myself and A/C has run great until the other day. I had to really get on the gas hard to get out into traffic and suddenly the A/C started going in and out.
There was also intermitent hissing coming from the compressor like it was ejecting freon. I let the car rest a feew hours and it was working fine again. Then it happened again after a few minutes of driving.
3 things that I have observed are
- with car parked and on, If I rev the rpms to 3000 the compressor will start to hiss and spit
- viewing the a/c cluth while the A/C is running it never seems to stop spinning - doesn’t seem to cycle on and off
- used my gauges to test a/c system pressure and it was in the normal range.
Any ideas or input is greatly appreciated,