Scottm69s

The air conditioning unit is sweating without running the a/c all day long. It was sweating so much that there was a big puddle under my truck everytime I stopped for a while.

The pulley in the engine audibly clicks and hesitates for a second when a/c is switched from heat to a/c. On the inside of the vehicle you can hear a loud revving when changed over. Wondering if the two could somehow be related.

MT-2500

What was the outside tempt and humidity?
It is normal for the AC to run on defrost cycle.
First check with ac on and engine warmed up and out side tempt 75 degrees or more does it cool good and does the compressor kick in and out very much?

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Remember proper testing gives us the answer to many problems.
MT