The problem is insufficient freon in the system. Fixing it is a two step
process. (1) Find the leak. (2) Evacuate the system and fill it with the
exact amount of refrigerant required.

If you were a redneck shade-tree mechanic, you might get one of those
twelve-ounce cans of freon, that comes with its own recharge hose, and fill
the system until you thought it was working properly. This might work, but
for long-term satisfaction you have to find and fix that leak.

Earle

"L.W. (ßill) Hughes III" > wrote in message
...
> Your low pressure switch is disconnecting the clutch because you
> have less than twenty pounds in the suction side while pumping, it
> should be between 34 and 38.
> God Bless America, ßill O|||||||O
> http://www.billhughes.com/
>
> MPClark wrote:
> >
> > I have a 97 Jeep Cherokee. Now that it's the summer I want to use my air
> > conditioning. However, when I turn on the A/C, no cold air is put out
> > and the compressor clutch cycles on and off, as if it were in defrost
> > mode. I am sure it is set on max a/c with the fan on high, and still
> > the clutch cycles on and off. I also checked the pressure of the Freon
> > and that is where it's supposed to be. I was thinking it might be a
> > relay of somesort that controls the clutch, maybe it is stuck it the
> > defrost position? Any help would be greatly appreciated.
> >
> > --
> > MPClark