When driving with the engine at lower than normal driving temperature, driver stops at a stop sign and with hard acceleration the engine surges from full power to dying out as tho fuel starved.this continues in a jerking action. Until; the driver removes his foot from the accelerator and then presses the gas feed again at which time the engine runs smoothly. This has happened on numerous occasions, however the dealership can find nothing wrong as the engine is now at normal running temp. Driver was told the problem is in the throttle body of the fuel system --- help..
2012 Chevrolet Impala acceleration complaints
Page 2 of 2: complaints 11 to 15 of 15, newest first, as owners wrote them.
2012 chevrolet impala. Consumer writes in regards to power sensor failure in vehicle. *smd the consumer stated while driving, the vehicle lost all power. The engine quit, the flashers would not work and he was unable to manually unlock the doors, or lower the windows using the power switch. The only way to unlock the doors was with the key fob, that unlocked or locked the doors from the outside. The vehicle was towed to the dealer. A diagnosis revealed a bad sensor and two burned wires. The consumer was assured the problem was fixed. A week later, the consumer returned to the dealer due to a malfunction with the cruise control. On june 13, 2013 while driving, the vehicle died again. It was the same issue that occurred back in february. The vehicle was towed to the dealer again. The next the day, the dealer informed the consumer, they still had not found a problem. Two hours later, the consumer was informed, they had found the problem, but the part had to be ordered. The part arrived the same day, and the consumer was assured, the vehicle had been repaired. However, as soon as he pulled off at an exit, the vehicle died again. After having the vehicle for over a week, the dealer informed the consumer, they found numerous exposed wires, that were causing shorts, such as rubbing on the transmission and other metal parts, many of them were not properly secured. Also, when the consumer turned on the headlights, he discovered the low beams did not work. The consumer stated chevrolet bought the vehicle back and they offered him a deal on a different make, model and year. Updated 09/24/13. Jb
I stopped at a intersection,and pulled out onto another road,the car backfired and quit running ,leaving me in the middle of the intersection,and almost got hit. I have taken car to dealer and they say the car is operating normal. This happens alot within this vehicle when accelerating.
Vehicle started via normal key ignition. After high idling stops for warm up, vehicle starts to have odometer needle move from 500 RPM to 1000 RPM for a steady 5 to ten minutes. In addition, event occurs frequently at long stops even after car warm. Usually, RPM may steady at about 750 or so a normal RPM setting for this vehicle. Took vehicle to dealer who kept it for a week. No correction made. Dealer state waiting to hear from manufacturer. Vehicle still have problem having needle flutter between the RPM mentioned causing undue distress to engine components. Please assist.
2012 chevrolet impala lt. Consumer states high pressure fuel pump is very noisy when accelerating from a stand still and also states issues with vibration *tgw the consumer stated the accelerator motor made a loud noise. The consumer stated the fuel lines, which apparently run directly under the driver's side floor, vibrate due to the harmonics set up by the high pressure fuel pump. The vibration is continuous and can be felt through the floor and up into the driver's seat.
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