Is Driving a Suzuki Embarrassing?

Why does the AC work when driving but drops when idling on a 1986 Suzuki Samuari in which you installed a 1995 Suzuki Sidekick 1.6 a6V?

• Answer:

  The fact that the engine was replaced should not be an issue. Here is my assesment based on your question; either the ac system has a smaller capacity (smaller compressor, condenser, receiver dryer), and for that reason while driving you get a higher flow of freon thru the system compared to engine at idle, or there may be some debris in the system causing a restriction, not allowing enough flow of freon thru the evaporator. Once again, if you are driving, the compressor will spin at a faster rate and therefore provide more flow of freon thru the evaporator, therefore the cooler air. It is also possible the pulley on either the crank or on the compressor is the incorrect size.