2009 AVEO, STARTED APRIL 2010, AT A TRAFFIC LIGHT, THE CAR BEGAN TO SHAKE. THE TACH NEEDLE WAS JUMPING BETWEEN 500 AND 1500. IT WAS ACTING LIKE IT WAS ABOUT TO DIE THAN TACH JUMPED UP. I HEARD THE ENGINE SURGE. LIGHT CHANGED AND CAR BARELY MOVED. I PRESSED GAS PEDAL TO FLOOR BUT CAR WOULD LUNGE FORWARD THAN ACT TO STALL. I PUT INJECTOR CLEANER IN NEXT FUEL TANK. THOUGHT IT WAS FIXED. 3-WEEKS LATER AS I WAS CROSSING A FOUR LANE ROAD, CAR ACT AS I DESCRIBED ABOVE, TACH NEEDLE BOUNCE BETWEEN 500 AND 1500, CAR SPUTTERED AND SURGED. TOOK CAR TO GM DEALER, THEIR COMPUTER FOUND NO PROBLEMS OR CODES. NO ENGINE LIGHT, NO CODE, CLEANER MASS AIR FLOW SENSOR, GOT GAS AT DIFFERENT STATION. JULY 2010 TOOK CAR TO DEALER AGAIN. STILL NO CODES, FOUND NO PROBLEMS. I THOUGHT PROBLEM MIGHT HAVE TO DO WITH HIGH HUMIDITY, SINCE THAT WAS THE ONLY COMMONALITY I COULD FIND WITH EACH INCIDENT. THE PROBLEM OCCURS EVERY COUPLE OF WEEKS, I HAVE GONE THROUGH A COMPLETE TANK OF GAS WITH NO PROBLEM. IT OCCURS AT DIFFERENT TIME S OF DAY, DIFFERENT OUTSIDE TEMPERATURES, AND WEATHER GETTING COLD IT DOES IT. TOOK CAR TO DEALER OCTOBER. THEY SAID POSSIBLE THE 10% ETHANOL GAS MAYBE PROBLEM, SO USE PREMIUM GAS. AFTER THREE PREMIUM GAS FILLS. TEMPERATURE BELOW FREEZING CAR SPUTTERED AND SURGED THAN STALLED. ROLLED TO STOP, TURNED KEY OFF, THAN STARTED CAR UP AND DROVE HOME WITH NO PROBLEMS. THREE DAYS LATER, ANOTHER BELOW FREEZING TEMP, CAR BEGAN SLOWING DOWN AT 40MPH THAN SURGED. WHEN THE CAR WAS SLOWING DOWN THE TACH WAS DROPPING OFF THAN JUMPED BACK UP WITH THE SURGE. AS OF TODAY THE CAR HAS 11158 MILES FOR LESS THAN TWO YEARS OLD. *TR
2009
UNKNOWN OR OTHER
VEHICLE LOST POWER TO THE ENGINE. STEPPING ON THE GAS PEDAL DID NOTHING. THE CAR LURCHED AND DECELERATED QUICKLY. POWER WAS SUDDENLY RESTORED TO ENGINE CAUSING THE CAR TO SPEED UP QUICKLY, THEN ENGINE LOST POWER AGAIN. CAR CAME TO A STOP, ENGINE SPUTTERED AND THEN DIED. NO WARNING LIGHTS CAME ON. RESTARTED ENGINE, CAR DROVE AS NORMAL. TOOK TO DEALERSHIP, THEY COULD FIND NOTHING WRONG. PROBLEM HAS CONTINUED INTERMITTENTLY FOR ALMOST A YEAR. HAVE TAKEN THE CAR TO THE DEALERSHIP MULTIPLE TIMES, THEY CAN FIND NOTHING WRONG. THE SUDDEN DECELERATION HAS OCCURRED AT ALL SPEEDS, INCLUDING ON THE FREEWAY ALMOST CAUSING A COLLISION. THE CAR WENT FROM 70MPH TO 40MPH IN ONE MINUTE, SPUTTERED FOR A WHILE, AND THEN CAME BACK TO DRIVE NORMALLY AFTER SEVERAL MINUTES. THE PROBLEM HAPPENS WITHIN THE FIRST TEN MINUTES OF DRIVING. IT HAS HAPPENED TWICE IN THE SAME DAY AFTER THE CAR SAT FOR 8 HOURS. THE PROBLEM HAS NOT OCCURRED FOR PERIODS AS LONG AS TWO WEEKS BUT THEN COMES BACK. THE MOST EXTREME OCCURRENCES HAVE BEEN ON SIDE STREETS WHERE TRAFFIC WAS NOT A PROBLEM, BUT IF ANOTHER CAR HAD BEEN FOLLOWING CLOSELY A REAR-END COLLISION WOULD HAVE BEEN CERTAIN. MY SPOUSE HAS DRIVEN THE CAR AND EXPERIENCED THE SAME PROBLEM.