NHTSA Complaint #10794408 — 2010 JEEP GRAND CHEROKEE

SEPT 26, 2015 DRIVING DOWN THE HIGHWAY AT ABOUT 65 MPH IN CRUISE CONTROL, MY JEEP JUST DIED. WOULD NOT START OR TURN OVER THE ENGINE LIGHT OIL LIGHT AND ECT LIGHT CAME ON. TURNS OUT THE TIMING CHAIN BROKE DAMAGED INTAKE VALVE ON #2 CYLINDER AND EXHAUST VALVE ON #8 CYLINDER. HAD THE HEADS INSPECTED VALVES AND TIMING CHAIN REPLACED. AND NEW SPARK PLUGS, IT HAD 100565 MILES ON IT. PICKED IT UP FROM THE SHOP ON NOV 13, 2015 RAN PERFECTLY NO VIBRATIONS SPARK KNOCK SMOOTH.. NOT EVEN 200 MILES ON IT AND THE SAME THING DRIVING ABOUT 65 MPH IN ECO MODE AND IT JUST DIED. THE ENGINE LIGHT TRACTION CONTROL LIGHT AND ECT LIGHT AND OIL LIGHT CAME ON. PULLED OVER ON THE SHOULD IT WOULD NOT START. HAD IT TOWED BACK TO THE SHOP.. THE SAME THING TIMING CHAIN BROKE AND TWO CYLINDERS HAVE NO COMPRESSION. THE SHOP CALLED THE MANUFACTURER OF THE TIMING CHAIN AND THEY ARE PUZZLED AS WELL ABOUT THE TIMING CHAIN BREAKING SO SOON AFTER BEING REPAIRED. SOMETHING IN THE ENGINE IS CAUSING EXTREME HARMONICS AND/OR VIBRATION INSIDE THE ENGINE AND CAUSING EXCESSIVE FORCE ON THE TIMING CHAIN TENSIONER AND GUIDE. HOWEVER, NEW PARTS SIMPLY DON'T BREAK LIKE THIS IF EVERYTHING IS COPACETIC UNDER THE HOOD.