The other morning, I pulled out of the house in first gear just fine. Switched to 2nd successfully, started accelerating as it should, then it suddenly lost engine power - no acceleration, no revving, just a dead gas pedal. Shifted back down to 1st and it goes just fine. Go back up, same thing again (I did this at least 5 times that morning).
This happened twice in a two day span last week (2nd gear for me, 4th gear for my wife), but the mechanics have had it for a week driving all over town without having it act up. Looking for some insight, since I can't trust it if I get it back untouched.
A friend of mine said it could be some kind of sensor? Any help is appreciated.