Vehicle Compatibility Information For Chevrolet Cobalt 2.2L 2007-2010 For Chevrolet HHR 2.2L 2007-2011 For Chevrolet Malibu 2.2L 2007-2008 For Pontiac G5 2.2L 2007-2010 For Saturn Ion 2.2L 2007 Symptoms That Indicate You Need A Throttle Body Replacement Vacuum leak Poor or high idle Replace throttle body The throttle body is the part of the engine that mixes air with the fuel to allow combustion to take place. There are a number of symptoms that are often due to a failure in this part, including repeated stalling for no reason, problems with responsiveness of the acceleration pedal and stumbling or hesitation whilst accelerating. .
