NHTSA Complaint #11209267 — 2010 CHEVROLET MALIBU

CAR INTERMITTENTLY STALLS GOING HOME FROM WORK, AND AROUND TOWN. NEVER STALLS IN THE EARLY MORNING (DARK OUT). THE WARMER THE OUTSIDE TEMPERATURE IS THE MORE IT STALLS, WITH THE HOTTEST DAY SO FAR CAUSING THE CAR TO HAVE TO BE TOWED BECAUSE IT WOULD NOT RESTART UNTIL THE NEXT DAY WHEN IT WAS COOLER OUT. MOST STALLS HAPPEN WITHIN 7 TO 15 MINUTES ON THE SECOND TRIP OF THE DAY (AROUND 2 PM), AND THE CAR HAS TO SIT FOR 20 SECONDS OR LONGER BEFORE IT WILL RESTART. NO CHECK ENGINE LIGHT COMES ON FOR THIS EVENT. THE ELECTRICAL POWER IS STILL ON WHEN THIS HAPPENS. THE STALL IS QUIET AND PRESSING THE GAS PEDDLE ONLY SPEEDS UP HOW FAST IT STALLS. MOST OF THE STALLS HAPPEN AT 1500 RPM OR LESS, AND 45 MPH OR LESS. THE STALLS HAPPEN WHILE MOVING, ACCELERATING, SLOWING DOWN, WHILE STOPPED IN GEAR, AND STOPPED IN PARK. THE EVENT FEELS LIKE THE ENGINE POWER CUTS OUT WITH NO WARNING, AND THE RPM GAUGE AND CAR START SLOWING DOWN. IF THE CAR CAN COAST FOR 15 TO 20 SECONDS, IT HAS FIXED ITSELF AND STOPPED STALLING (AS LONG AS RPMS DID NOT DROP TOO FAR) ON A FEW OCCASIONS. CAR HAS BEEN TO DEALER 3 TIMES, AND IS GOING BACK AGAIN NEXT WEEK FOR SAME UNFIXED ISSUE. MOST DRIVING IS CITY DRIVING, AND IT HAS ONLY STALLED 2 TIMES WHEN DRIVING AT SPEEDS AROUND 55 MPH. CAR HAS STALLED 51 TIMES SINCE JANUARY OF THIS YEAR, WITH SOME ALMOST CAUSING ACCIDENTS. IT IS STALLING MORE AND MORE THE WARMER IT GETS OUTSIDE. DEALER WORK DURING THIS TIME THAT DID NOT FIX ISSUE ARE, SPARK PLUGS AND WIRES, TIMING CHAIN AND COMPUTER, BATTERY, CLEANED THROTTLE BODY AND INJECTORS. DURING THE STALL EVENTS, MY LIVE SCANNER TOOL REPORTS BOTH O2 SENSORS GOT TO 0.00 VOLTS FROM START OF STALL TO END OF STALL. THE SHORT TERM FUEL TRIM GOES INTO THE 30 RANGE (LEAN), WHEN STALLING WHILE MOVING BUT NOT WHEN AT A STOP. NONE OF THIS LOGS ANY CODES IN THE COMPUTER. VERY SCARY, HAVING YOUR CAR STOP WITHOUT WARNING IN TRAFFIC.