Beetle problems

Friends I need help, a few days ago I drove on the road and suddenly my Volkswagen lost acceleration, flooring the accelerator thoroughly and does not accelerate the car sorry if it does and at times as it is locked and accelerated to full, now the mechanic says that it seems to be the acceleration body but is not sure what can I do? Someone knows what happened to him or someone has happened to him, and asks me to buy the spare but he is not sure and here that replacement is very expensive and I am used from Guatemala and the truth is that here there are no very good mechanics that are specialized in VW, my VW is New Beetle 2001 of 1.8 turbo thanks

If the body is fucked or does not regulate or regulate high, because it would suck additional air, it must be the butterfly box that is the one that gives the ECU the butterfly position information to inject the fuel, you do not have to change the whole body for the gral one you take two screws and leave, sometimes the tracks are spent or cut, it would be like the fuel floating or the branch of the scaller Some of the two disarmed or as the radio volume potensiometers, that is the function is varying the resistance and thus accelerates or not, I hope the information serves you, luck!