2011-2015 CHEVY CRUZE ROUGH IDLE FIXED!
CODES P0171 P1101 P0106 FIXED!
PVC VACUUM LEAK DIAGNOSIS AND FIX!
VALVE COVER GASKET REPLACEMENT!

hey guys! In this video we have a 2014 Chevrolet Cruze we just purchased for resale not long ago.. after hooking up my Zurich Z13 OBD II Scanner! (It’s actually been a great scanner for a while now! Reads almost everything on a car!) it had 3 major permanent codes which were:

P0171 - Fuel Trim System Lean
P0106 - Manifold Absolute Pressure (MAP) Sensor Performance
P1101 - Intake Air Flow System Performance

All these codes are related to a vacuum leak. Which means there is air coming in past the MAP sensor. causing faulty reading causing too much air and not enough fuel which in turn will cause your cruze engine to idle rough and possibly stall..

The diagnosis process was us spraying some carb cleaner or water around the valve cover to see if there was any change in idle. But before we even got to perform that test we took the cover off and checked what most people call the PCV valve which is (Positive Crankcase Ventilation System) which was creating a suction where it should be timed and electronically controlled. Clearly that was our problem.

Also checked out our Scanner Live Data readings and the short term fuel trim was reading over 30% which is not good.

Well anyways to keep this description short, we went ahead and ordered a new valve cover for this engine since we can’t replace that part by itself.

Part came in a few days later and here’s how we did it!

Thanks for watching the video!

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