Whining noise, parts keep going out
Hello. If the air compressor is faulty (https://www.yourmechanic.com/services/ac-compressor-replacement) this will cause the engine to work harder and that may result in lower mpg. The whining noise (https://www.yourmechanic.com/services/car-is-making-a-noise-inspection) could be caused by a bad serpentine belt (https://www.yourmechanic.com/services/serpentine-drive-belt-replacement), pulley (https://www.yourmechanic.com/services/idler-pulley-replacement), or a...