It the overcharge is just a few ounces and not grotesque, it will behave about the same as when it is properly charged - the pressure readings will be identical. However, under some conditions slugs of liquid refrigerant will spill out of the evaporator into the compressor, where it has the same effect that chewing on rocks has on teeth. Overcharge is a major contributor to compressor failures. Worse overcharges will destroy the compressor outright - see the source for an example.
The compressor head pressures can get too high and you'll blow the compressor seals. There's only a limited amount of freon that the system can accept and still function. If you exceed that limit, you won't get better performance.
hi side too hi
low side too hi
compressor runs continuously
fans run, hi speed
engine could run hot
warm duct temp
time to identify and service.
they even let the lube center work
on em now
leaks start showing up
hi pressure cut out
may trip when ambient is hi
note system capacity is
usually provided on the id sticker
RF of eng. comp.
First of all, I am NOT an expert......I accidentally over-filled my daughters 2004 Jetta, the compressor would turn on for a second then turn right off (every 10 seconds), over & over & over...The compressor was trying to stay on but I guess the excess freon was causing the problem. I just released some freon from the same place I put it in & now it runs great, becareful not to puncture the the valve, use somthing thin enough to press in on the rubber valve, but not pointy enough to damage it. I just pressed it in for a few seconds at a time & kept taking readings on my hose/guage that I brought from the auto part store. If you don't have a guage, take out some freon & listen for the compressor to stay on longer & longer each time, until it stays on full time. Good luck
will not cool and blow the seals in the compressor
It will not cool.
How will my AC behave if I have overcharged it?
