on a long road trip my converter in exhaust fell apart and it rattles in low rpms. bene like this for about a week now. but i dont know if it is jsut fallign apart and clogging or what but when im driving when first shifting into gears SOMETIMES it loses power when im on the pedal for just a second. could this be my converter getting cloggged or my O2 sensor or fuel pump or what? it kinda of jerks a little bit sometimes to like for a split second at a time one after another like when im maintaining a steady speed.