Re: Anybody know what this is ?
Posted: Sun Apr 20, 2008 8:14 pm
I know you have looked at the low pressure cut-out switch and ruled it out. However I was thinking yesterday that the clutch uses a low pressure switch (or temp switch) to engage the clutch and a high pressure switch (or temp switch) to shut it off. Remember the clutch cycles on and off. When you select Air conditioning you should get:
1. AC clutch engages
2. High idle solenoid kicks in (1100 rpm)
3. As cold air comes out of the vent the compressor cycles off and on automatically.
I think you may have a problem with whatever is used to cycle the ac compressor off and on. Sorry I am not used to trouble shooting automotive AC systems. I only know how air cycle machines work on transport category aircraft. (no freon)
1. AC clutch engages
2. High idle solenoid kicks in (1100 rpm)
3. As cold air comes out of the vent the compressor cycles off and on automatically.
I think you may have a problem with whatever is used to cycle the ac compressor off and on. Sorry I am not used to trouble shooting automotive AC systems. I only know how air cycle machines work on transport category aircraft. (no freon)