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Q:

When I start my AC the power of engine become very less when i accelate the car on 1999 Suzuki Grand Vitara

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
i feel miss fire accelarate and also my car jergs
(1) Answer
review when ride last tuned. mis fire usually ignition issue. get diagnostic run. your looking for issues with battery, alternator, ignition coils, spark plugs, etc.
i am guessing plugs and coils and alternator. diagnostic will tell you for sure.