2010 Toyota Sequoia Fuel System Problems

While stopped in traffic with your foot on the brake, your engine suddenly raced to 1200-1500 RPM and the car lurched forward; you were able to stop safely with extra brake pressure. When you tried to accelerate on the highway, the gas pedal became unresponsive and you had to coast to the shoulder. The check engine light came on, but turning the engine off and restarting it restored normal idle and accelerator function. The problem recurred a few hours after the dealership returned your car, and this time they found fault codes and replaced the throttle body, though you suspect an electronic or software issue may be the root cause.