A/c unit on 1998 vw jetta blows hot air, freon has been added, compressor comes on air is hot.
You need to have it diagnosed by a professional. These are complicated systems even to a trained tech. You may be over or under charged, have a clogged expansion valve, have a leak or many other issues. This model has a rcv refrigerant control valve inside the compressor which regulates the pressure of the compressor. If you notice the compressor never shuts off like conventional auto a/c's do the only time the clutch works is when you turn it on or off. Can be complicated.
Try to jump the hoses that come from your motor to inside your car for the heater. In this way you can test. The problem can be your heater air can be mix it with the cold air.
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what does (d) mean? and what should i be checking my compressor for?
The AC is blowing hot air believe that it is full on freon, the compressor is not coming on. is there a relay or fuse that could be bad?
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