GM Tech wrote:Need I mention- variable stroke compressors turn very easily when at least stroke?
GM Tech wrote:75 psi is gage pressure- your connection to car is amiss- not communicating with car--
Yes variable stroke compressors turn very easily when at low stroke- and no charge...or even with charge at low stroke there is no pumping- I've taken the coils off these type situations and found the embedded thermal fuse in the coil face to be blown- I merely solder in a piece of copper about 1/2 inch long- put some epoxy on top and re-install and it is good to go again. I'll bet that that is your only issue- the thermal fuse in coil face has let go- It is no big deal- since they make coils with out thermal fuses- so this just becomes one of those models-- the thermal fuse is there just to avoid a "walk-home" if indeed the compressor locks up and the clutch slips and overheats - the fuse blows before it can cook the pulley bearing- and cause the serpentine belt to melt off- and thus the term- walk home. But unfortunately, the very situation they try to design around actually causes a "no a/c" condition do to the wide open coil due to the blown thermal fuse on the coil face..even though the clutch has never slipped. It doesn't always work the way it is designed. Take it apart and see if I'm right....
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