A/C compressor replaced 2 years ago. A/C cools fine for 20 minutes but air flow declines and stops cooling. If I switch to Vent for 5 minutes the air flow comes back. If I then switch back to A?C it cools again for about 20 min. It seems that the evaporator must be freezing up and the vent helps to defrost it. How do I fix?
A/C cools for 20 min. Then air flow declines. Switch to Vent for 5 min. fixes. on 1998 Ford Taurus