We recently bought this car on a auction but the radio is not working. I was told that all I need is to get the code for the radio and it should work. Also my engine lightis on. I took the car to PepBoys and I was told that it was the o2 sensor. They changed the sensor and the light came back on. Them they told me it was the pvc valve. They changed it and the light is back on. They told that the car need to run like 20 cycles on and off ( cold and hot) and if the light does not go away to bring it back. I feel they are feeding me excuses because they do not know what is wrong with my car and they do not want to give me my money back...Any ideas

Cars & Trucks - Suzuki - Verona - 2004 Suzuki Verona