Hello people, really really need some help!!!! I have an A3 1.8t and the engine light has been on for a while so i have had loads of sensors changed and just when i thought it was all sorted, the light shows up again but now when i put my foot down, the revs seem to hold back and when i get to 40mph the traction control light comes on but wont turn off until i turn my engine off. while the lights on, my car drives like a slug. really need some advice please, besides the fact my car is broken, my dash has more lights on it than a christmas tree, ha ha!!!

Thank you