I have a Chevy Malibu 2012, 62000 miles. Problem has happened a few times. I start car and runs like I have bad gas, it will only go 20-25mph even with pedal to the floor. I can stop turn off and it's doing sane thing. Go to Auto and have them get readings since engine light comes on also. Readings say P1516, throttle actuator control module & trottle actuator position performance. Took to a mechanic they changed filter and tuned up, black paid $130. Two weeks later started car, same thing. Then came home, next day start car no engine and it drives fine. One wk later same problem, stop at corner store cone out start car it's fine. I'm disabled female, must travel 90 miles to Dr appts. So called spoke to mechanic says it's probably O2 sensor. Have appt tmrw w mechanic. I don't have monies to go thru trip after trip to try to fix and concerned about being taken advantage of. Any feedback of what would need to be fixed would be greatly appreciated.