If my ac compressor have seized up, it makes the belt slip, horrible noise, loss of power. Do I have to change the whole compressor (including clutch) or can I replace the clutch to be able to turn on vents (panel, floor, defrost) on?

For the mean time I am going to disconnect the Clutch Cycling switch (thanks to ZZiggy for the post about the clutch cycling switch), so I can have heat and replace the ac compressor with clutch in the spring.

Thanks!!!

 

i seriously douby that it is just the clutch. if the compressor is locked you will need to remove the orfice tube in the evaporator and flush the condensor, evaporator, and all of the lines unless a manifold is on the line. you can flush the system with just rubbing alcohol and lots of air pressure. put a new orfice tube, compressor, and dryer and pull a vacuum for about and hour. charge up and you should be good to go.

 

If the symptoms occur when the AC compressor is not turned on (Control in OFF, FLOOR< or VENT), the problem is likely only the clutch pulley bearing that has seized and the compressor may be okay.

If the symptoms occur only then the clutch is engaged, then it's new compressor time.