Ac service port
on what vehicle???
Oh sorry thought it put it on post automatically. It's a 2006 Ford Fusion. It blows cool air just not cold air like it did first 3 summers. So I know it's working, just being in Orlando AC really not a option, needs get and stay cold with summer 90-110 degree temps just around the corner. Been able find in friends Tarus & Chevy Suburban. But looking in Fusion there's 3 ports, 1 labeled evaporation service right in front of firewall and 2 others very close to AC compressor. Looking at engine there on left side by coolant reservoir.
your r134a is low,add a can,service port should be on the dryer,the 3 you see is not for charging the ac system.if you dont see it,it has a blue cap on it,this is the low pressure side where you will charge it,if you not sure take to a shop to charge.thing about r134a is it dont cool like freon did,if you sitting at a redlight it will not be as cold,when driveing it gets colder.I doubt you have a leak in the system,after several years of driveing the 134 looses some of its colling ability.
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