the tank may explode
the tank may explode
Issues can arise from having too much. Its not worth the risk. Syphon some out or drain it until you have the proper level.
The system was overfilled and purged the excess coolant.
How do you add refridgerant to a 1997 Geo Tracker?
The tank has probably been overfilled before. There's a check ball at the top of the tank, often made of a porous material which will expand when immersed in fluid. Overfill the tank, and it gets jammed into the filler neck and stuck there.
An ac expansion valve is the part in the ac cycle where the refridgerant goes from a smaller tube to a wider tube. Traveling through this valve causes the refridgerant to get cold similar to cracking the valve on a air tank. When the gasses go from a high pressure to a lower pressure they get cold ( PV = nrT ). The cold refridgerant then goes through an exchager where the blower blows air across to get the cold air you feel when you turn your ac system on.
Nothing happens to the tank but the fuel will expand slightly.
If it is too overfilled it can seize the motor
the tank will leak
r-134a
Overfilled tank, most likely. Stop going to that gas station.