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If the front blows cold it would suggest that the freon level is ok. However, if the freon is low, it still may blow somewhat cold in the front and less adequate in the back. Have you had the pressures checked to verify the charge is ok? Does the rear fan motor work? There also may be a restriction or defective expansion valve in the rear causing little/no freon circulation. Another problem could be a defective/stuck blend door in the rear causing the cold air to not circulate
I have the similar problem with both my Jaguars, one is a 1988 Jaguar XJS, the other is a 1987 Jaguar XJ6, both blow COLD air out some vents while it blows warm air for heat. I heard it had something to do with the cold air blowing as a dehumidifier, I don't know if this is true, but it is really annoying to have both cold and warm air blowing when I need heat in these cold Canadian winters. If you find out please drop this website a note and let us know how you solved it. thanks.
sounds like the unit has a low charge and is cutting out on a low press safety. This is more then likey not something you can fit yourself most of this units are not really serviceable with out cutting the lines open and adding a valve. If the unit is still somewhat new you can try for a warranty repair, if not you are better off to replace it.
Freon is low, go to walmart and buy a R134 kit with guage attached (not very expensive. Connect it to the low pressure side of the A/c system (don't worry the connection won't fit on the high pressure side) Read the guage on the kit and add as neccessary. It truly is that simple.
have you checked the mixing motor and the door?pull out the glove box you will see a white motor remove it 5/16 or 8mm plug it back in run the system to see if the shaft on the motor works then check where the shaft fits in the top of the door if it's broke cut the box under the door w/ a dremal remove door fix if posible reverse steps good luck.i'm doing this now i fixed the oor but the compressor wont come on any ideas???????????
Either the unit is really dirty or it is low on refrigerant. A unit tha is low on refrigerant will start off cold and withing a few minutes, start warming up. If you aren't seeing any water its because of one or both causes listed.
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