Vehicle Compatibility Information For Buick Encore 1.4L 2013-2021 For Chevrolet Cruze 1.4L 2011-2015 For Chevrolet Cruze Limited 1.4L 2016 For Chevrolet Sonic 1.4L 2012-2020 For Chevrolet Trax 1.4L 2013-2022 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. .
