Car shakes when ac is on
Whenever I turn the ac on while in
drive it starts to shake really bad but
only when it is in drive.
Something is out of balance with your AC drive belt or AC clutch. Make sure the drive belt is properly tensioned and the AC compressor is not loose. If problem still persists try removing just the AC drive belt. Rotate the AC pulley by hand to see if it is smooth and bearing isn't shot. Run the car with the AC belt off, does problem still persist? You might have a bad AC clutch.
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