I bought a 2005 Ford Taurus last month with a bad A/C clutch. I had a friend, who says he knows about such things, replace just the clutch. He says he lost no refrigerant, which should be right. The A/C blows cold OK regardless of the ambient temperature, but the new clutch clicks in and out. I was of the opinion that this was caused by a low charge. My (not always right) friend thinks it’s normal, due to the cooler weather. I THINK the compressor should run all the time, and the car’s interior temp is regulated by the flapper doors. I have no way to capture the present charge and weigh in the exact amount needed. I have accurately weighed in an additional 8 ozs, with a good digital scale, and it still clicks in and out. I have readings of 125/25, but the outside temp is only 50F this morning.
What readings should I see at 50F?
Do I still need more R134a?