I have a 2005 Audi A4 1.8T. The check engine light has been going on consitiently. I have replaced, the timing belt, water pump, ignition coils, plugs and the temperature sensor. To add insult to injury after all of the replacement parts, the car is having major issues starting in the morning when the temperature drops. Does anyone have any ideas? I am taking it to a garage that specilizes in Audi repairs, because I am sick of the dealership "reparing" my problems. Any help would be greatly appreciated.

 

Have your car scanned for the codes and post em up or search for the codes. A CEL can mean hundreds of different problems but it will throw up different codes depending on what your car is going through. As for your car starting hard in the morning check your spark plugs and motor oil.

 

Aside from the normal stuff, leaks in intercooler piping will prevent starts. A bad speed sensor will make it hard to start, too.