Audi

I own a 2000 audi avant quattro with 86000 miles on it. recently it has begun to back fire or putter sometimes when i step on the accelerator. it doesnot over heat,nor do i drive the car hard. about 5000 miles ago i took it in to russnake audi for service which included replaceing the right cam ad er, as well as the motor or sensor on the intake man ifold flapp- the one that allowes more air to the engine when i accelerate or give it more gas. i luv this car i sevice it like the owners man ual tells me to do. help plz .

You might just be jogging rich..