matchhead

I have the right amount of freon 2 lbs. in the system, the high side presure is all right but the low side goes from 45 60 lbs. of suction pressure, 95 dodge ram diesel

Flashpoint

that sounds about right , 40-60 is ok unless you mean you have a problem of some sort. How cold is your air getting thats what really matters.

jrs_dodge_diesel

Remember that the pressures depend on several factors,

design of the system
whether or not the system has the proper amount of refrigerant
temperatures

With your windows down, A/C on Max, with the blower on High, the air coming out of the vents should be 30°-40° below ambient air temperature. When I get home from work I will look in my A/C books and look up the proper pressures for you.

jrs_dodge_diesel

Ok, I just dived into my books.

The proper amount of refrigerent needed is exactly 2 lbs of R134a, like you mentioned earlier.

Proper operating pressures are as follows :

Low side (suction) is 32-40 psi

High side (discharge) is 190-220 psi

Let me know what you get for pressure readings and if your A/C isn't doing what it's supposed to do.