Not sure you may need gauges to see if it's actually full. It can not work if not enough freeon, and if your put too much it can make it not work. My dads owns an A/C business so that the only reason I know that.
"Hp sells cars, Tq wins races" - Carroll Shelby... RIP
2012 Mustang GT Convertible
2003 Mustang GT (Sold)
1999 35th Anniversary V6(SOLD)