Air conditioner help please??

[fish254]

my car has freeon in it when i turn the ac it blows hot air the clutch does not seem to kick i can freeley move the clutch with my hands it does not seem to be stuck???

 

[HISSIN50]

How do you know you have the proper mass of refrigerant in the system? If the level is low, the LPCS won't allow the compressor to engage.

The clutch pulley should freewheel when the compressor is not engaged.

If you jump the LPCS, the compressor should kick on. Do not allow the car to run like this for more than a few seconds at a time. It does allow you to check the wiring and pressures, and introduce extra refrigerant into the system.

Good luck.

 

[fish254]

So the best thing to do is check the freeon level correct??
What is the A/C Clutch Cycling Switch do??
Does the A/C Switch - Pressure Cut Out cotrol th fan speed for when the ac is on??

 

[HISSIN50]

The cycling switch (aka LPCS) shuts the compressor off when the low side pressure drops too low. This keeps the compressor from burning up.

A pressure cut-out switch sounds like the high-pressure cut off switch. It does not control fan speed. The HVAC selector position determines this.

And yes, I'd check low and high side pressure and go from there. Chances are you need some refrigerant but you need to have a set of manifold gauges on there to know for sure (and to fill it semi-accurately).

 

[desertcox05]

that signal also goes through the ccrm. mine goes in but it doesn't come out so i bypassed it to get the a/c to work. one of these days i'll r/r the ccrm

 

[HISSIN50]

that signal also goes through the ccrm. mine goes in but it doesn't come out so i bypassed it to get the a/c to work. one of these days i'll r/r the ccrm

Not a good idea to spin the AC compressor at high RPM or WOT.

The signal goes through the common and NC terminals of the relay as I recall. The relay coil ground input from the EEC shorting to ground could cause the relay to keep the AC coil circuit constantly open.