about a week ago i got my 97 grand prix gtp back with 153,456miles or should i say bought it back, anyways i noticed that when under normal acceleration it sounds like the engine is sputtering, also when in gear u can hear the engine kind of wanting to turn off and my dash, headlights and interior lights flicker when thats happening, apparently the guy who had it was using regular gas instead of premium like i use. could that be whats causing the problem or is it something else. and the top end was rebuilt 1 year ago
