I understanding throwing refrigerant into it isn't the best approach. I'm just confused by the behavior of the system.
Symptom of under/overcharging? Water in the system? Faulty Switch? Restriction?

2007 Crown vic 96k miles manual climate control. The past few weeks I've noticed the AC in my crown vic getting warmer. Performance is ok at idle, 55-60F, compressor rarely cycling. However while driving the compressor short cycles and the air gets warm. Do the great minds here think this is symptom...