Car does not go to final speed

Hello new here and you since my last hope. Have the Fiat Grande Punto 1.4 8V of my acquaintances here in “care”. The following problem: car starts super running quietly, but as soon as you give full throttle the engine does not go over 3500 turns and charge control lights up briefly, then breaks down and game starts again from the front. My acquaintance had the Fiat in the contract workshop these meant 99% the throttle flap, then have for sloping 520€ a new built-in same sch… again. Then the master thought you can only try out, because my acquaintances unfortunately “try” in the workshop can not financially afford, try to help was earlier motor vehicle mechanic. Have already tried the following: – Control times vote – Crammer unscrewed thought Kat is defective – all mass connections checked and a new cable to gearbox built – hoses and ignition cables checked on marder damage – Drosselklappe was already renewed vehicle showed when reading out no fault and engine lamp not even thought of you already had this phenomenon thanks already to Alex already in the weekend?