Hello everybody I have a 2005 Ford excursion with a 5.4 L working on the AC when I turn the front AC on it cools decent suction pressures running about 46 psi I turn the rear air on it goes almost to 60 the front doesn’t cool as well and the back starts cooling decent any suggestions thank you everybody

 

OK I’ve been messing around with it this afternoon sitting in their letting the truck idol I get Dee sent to Good AC coming out a frat sinners I turn the back AC on the low side pressure goes up to the red and I lose AC front and rear