Please most honourable house.

My yaris 2006 is giving me serious head ache. The acceleration is so poor and whenever I slow down, the trottle stops working. I will then need to trottle down completely and then the car will suddenly jump up almost hitting the car in front of me. I have taken it to so many mechanics and the first thing they each do is service the fuel pump, but the problem remains. I even had the fuel pump changed and I have spent so much. Now everyone says it is  the brain box I need to change. I just want to be sure a brain box is the solution. Thats why am sharing this. Please anyone with similar experience with yaris should please advice me on how the problem can be dealt with once and for all. My car has been parked for over a month now.

Thanks

Throttle boy, cable check and clean start with simple things first

Watch video on how to do it, this guy has a LOT of GOOD maintenance video on youtube


https://www.youtube.com/watch?v=41yFXjibtLY




https://www.youtube.com/watch?v=J63aFNv3cT0