ITS MAKING A POPPING SOUND AND ENGINE IS IDLING UP AND DOWN.

Mike, This could be any number of different things. We'd be more than happy to take a look at it and diagnose the problem. Please call us at 770-876-6956 to schedule an appointment. If you need help arranging a tow, we can help you with that as well. Thanks, Dennis Eidson Honest-1 Auto Care of Roswell