I have a 2000 infiniti i30 nd Service engine light is on check my battery terminals nd put them back on nd light went off for a few minutes and then came back on..Alson ive checked all my coils nd spark plugs and even my tires and rack and pinion and hear this weird rubbing/grinding sound located on the right hand side while accelerating only. Do you have any idea what that can be and how i can test or test the problem