In my 98 GT, the ac isn’t working almost at all. I checked the pressure on the low pressure refrigerant pipe, and the pressure keeps fluctuating with the car on. I found that this is happening because the compresser keeps on turning on then off rhythmically in sync with the engine reving higher then lower. Would a recharge fix this or is the ac clutch bad, or is it something worse? My car is a manual if that makes any difference.