Locate a cooking digital instant-read thermometer. They be found in the cookware section of most supermarkets. Approximate cost is $12.00
Insert the thermometer needle between the car vent slats.
Turn on the thermometer and observe the current room temperature.
Turn the car on. Once the engine is running, turn on the air conditioning unit.
Turn the fan to a high setting.
Turn the temperature setting to cold.
Observe the temperature dropping. This may take a few minutes.
This is a simple way to test cooling. You need to visit a service garage to have freon levels and a/c belt checked.
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