Hi, we now have a Chevy Van G20 with 5.7L from 1993, the last years everything was great, now since the beginning of the season he has no train anymore when you set the automatic transmission to D. You have to push the pedal completely through so that he can have power (if you can talk about performance), but if I turn him on position 2 he takes super da sGa and shows well, can someone help me further? Greeting and pleasant week