Review Of 2012 Cruze Check Engine Light On Rough Idle Vacuum Leak Ideas. The engine may run well at higher rpms, but surges, runs rough and struggles to maintain stable rpms at idle. Web i have a 2012 chevy cruze (only owner) and it is rough idling and seems to run sluggish.
This caused a new vacuum leak at the front crankcase seal. I see people suggesting that the valve cover be checked. This time they said the turbo was bad.
