The company anticipates that some of its vehicles will begin to incorporate a low - tension belt for the front - end accessory drive, which will further drive fuel savings. (greencarcongress.com)
The noise could be anything from exhaust leaks to accessory drive problems or internal (valve train for instance) faults. (yourmechanic.com)
The engine's accessory drive components and front cover are new. (autoweek.com)