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

i feel miss fire accelarate and also my car jergs

Asked by for the 1999 Suzuki Grand Vitara
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.