307 shaman problem

I have Mrb Peugeot 307 xt automatic car for 5 months, gasoline TRANSMISSION has caused me trouble, threw oil again, it was not repaired but it has not changed, the valves have changed, oil has changed again, but when the engine shifts in gearshifts, the car almost bounces and 4. He faints in shifting, then eats gas

Have you changed the brake sensor?