I got my timing belt changed on the 08/08 and on the 05/09 while driving the Engine Managemen light EPC light and Traction Control light all came on the dashboard. The car then started to drive funny, moving very slowly despite me pushing down on the acceleration pedal. The car generally will not pick up any spend and will shake if I get it anything above 30MPH. The car will also shake when I stop at the lights and the stop/start function says faulty/unavailable. I took it to a mechanic and got the above fault codes and have paid roughly £700 changing the spark plugs, ignition leads, coil pack and then a fuel injector. However, neither of the repairs have solved the issue and the car continues to misfire, making a loud rattling sound from the engine and shaking when stationary. This mechanic then said I probably have an issue with the valves? I took it back to the mechanic who replaced my timing chain and they have said that I have an issue with the ECU and explained that it is not sending information to Cylinder 4. They have advised I get the ECU scanned/repaired but are not able to assist in this area/ do it I am a bit worried about paying to get the ECU scanned/repaired as I have been already spent a lot of money trying to fix the fault and have not had much success. I am also a young female and feel Mechanic’s are just taking my money, knowing it will not fix the fault. For this reason I am considering paying for a 3rd diagnostic from Audi themselves but of course this will also be expensive. Is anyone able to offer any help/ advice. I would really appreciate it.