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Anonymous
In the view of experts such as ASHRAE, 'air conditioning' includes adjustment of the humidity as well as the temperature. You'll see that most common 'air conditioners' do not meet this standard.
Wiki User
The extra load imposed by the air conditioning compressor is overheating the engine. This could be caused by numerous things, but the most common would be either a broken thermostat, low coolant, or a badly tuned engine. Take it to a mechanic.