I have a 2000 Subaru Impreza it has 130,000 miles on it. Problems started a few months back and I have tried several things to fix it to no avail. It hesatates when starting off then gets a surge of power once over 2500 rpm in every gear. It has a very bad jerking and bucking. The first thing I tried was to replace the fuel filter, then plugs. I then got codes and it said the accerator positon sensor was bad, along with downstream O2 sensor. I have replaced both of these still not better. I had the codes read again and now it says the idle sensor is bad? My question is would this cause the problems I'm having?
