A couple of things to consider. If you have the late 98 and up fan module, you will move more air through the A/C condensor which will not only improve condensor cooling but radiator cooling. One other item to look at, is the amount of R-134A refrigerant you have in the system. A R-134A is very sensitive to how well it cools based on the refrigerant level. Sometimes you will have better cooling if the system is a couple of ounces less than than specs. But adding more refrigerant will usually reduce cooling capabilties.