I have an Audi A2 (Reg: 2003), FSI. The car has low mileage for its age and I have not had many issues in my short period of ownership (3 coil packs have been replaced and there has been a heating issue). Hence my surprise when I had a Service earlier this year and I was told the water pump needed fixing. This I did, and the car has not been the same since. The first thing I noticed after the Service, was that the ignition was not functioning as it should. (Instead of it turning on normally, I now have to press down the accelerator to get the engine started.) Secondly, a few weeks after the Service, the engine management light came on. I took the car back to the mechanic who had performed the Service. He replaced a coil pack, and then after the problem persisted, he told me that there was a problem with the wiring (the earth wire).
I am now at the stage where I have had 3 different professional opinions on the matter. The mechanic who performed the Service, told me to see an Autoelectrician. The Autoelectrician performed a diagnostic and tells me there is either a wiring problem or a CPU needs replacing and in order for him to find out, I will need to spend another £800 or so for him to find out. (He suggests that I dispose of the car.) A third mechanic advises he can find out the problem for a few hours labour. Importantly, none of them have been able to put their finger on the problem, even though all of them have performed a diagnostic on the car. Seeing as I purchased the car with good money, I am reluctant to get rid of it at a substantial loss. I am also reluctant to pay huge costs for the repair of the vehicle. Part of me suspects the diagnosis may be wrong, as different professionals have said different things.
What do people on the Forum think the problem is? Has anyone come across this type of problem before? In your experience of Audi A2's, what advice would you give going forward?
I would be most grateful for your replies.
Thank you in advance.