I just replaced a bad knock sensor (noise sensor) on my 2006 RTX. I took it out this evening and it stills runs the same (poorly). The error code does not come up, but it hesitates when I press the throttle and it won't go above 7000rpm. Other than that, it sounds fine and runs fine. Does the computer save a code or anything that needs to be cleared for it to go back to running well again?