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If speeds are under 40 mph and the air temp is above 85, my AC does not seem to work well. On the highway, it seems to work very well.
Recently replaced with no change in performance:
Fan clutch
Water pump
Radiator
I've also degreased and hosed out the condenser.
The AC system has been checked (by a friend with a set of gauges- but is not a professional) and a small amount of refrigerant was added. Still no improvement.
The AC system has been checked (by a friend with a set of gauges- but is not a professional) and a small amount of refrigerant was added. Still no improvement.
We would need to know what the low and high sides pressure reading were to even begin to answer.
I forget the exact numbers but they indicated that we needed to add the refrigerant. We added the refrigerant and the numbers were in the proper range. And this was actually last summer- temps haven't been that warm yet.