When I set the AC on, the temperature rises above half the normal range. Why? on 2006 Isuzu i280 Pickup

The pickup truck is an Isuzu i280, model 2006.

by in New York, NY on August 22, 2012
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2 answers
ANSWER by , August 22, 2012
As long as it's not overheating should be ok. Check fan,radiator,and condenser clean as needed. Some vehic.have electric fans as well to help when ac on. Check for that and see that it comes on with ac.Does it run cooler at say 55 mph?
ANSWER by , August 23, 2012
ck cooling fan operation to start with