Hi, so I have a corolla 1.6 e11? I think, the 5 door one, and when I try to accelerate its slow and once it reaches 2000rpm it seems like it loses power/jerks then it suddenly all comes at once, It does have an engine management light, p0171, system too lean bank 1, which I think it comes up as a 02 sensor on the diagnostic machines, are these 2 problems related? And if not how would I go about sorting the first problem out