Chevrolet Repair: chevy cavalier, chevy cavalier, oxygen sensor

Question
i have a problem i have a 2002 cavalier and the engine skips at idel and when i accelerate ive changed plugs o2 sensers and new catalc converter i also just put in new coil packs what could be wrong with iy any ideas

Answer
HI THOMAS, IF YOUR ENGINE SKIPS AT IDLE OR UNDER LOAD, THE MOST COMMON PLACE IS THE IGNITION SYSTEM. BUT IT SOUNDS LIKE YOU ADDRESSED THIS. BUT DID WE CK THE INJECTORS ???,DID WE CK FOR PULSE AT THE INJECTORS ?? DID WE CK FOR ANY TROUBLE CODES IN THE SYSTEM,[CK ENG LITE ON ??] I AM SURE THE CK ENG LITE IS ON IF THE ENG IS SKIPPING... GET A SCAN TOOL OR TAKE IT TO A PLACE THAT CAN SCAN AND HAVE THE SYSTEM CHECKED. THIS WILL TELL YOU WHICH CYLINDER IS SKIPPING. ONCE YOU FIND WHICH CYLINDER IS SKIPPING YOU CAN PINPOINT THE PROBLEM. SUCH AS SPARK PLUG, INJECTOR,INJECTOR PULSE.[LIKE PCM IS NOT SENDING SIGNAL TO THE INJECTOR] OR WORSE YET, MAYBE A VALVE PROBLEM,VERY RARE, BUT POSSIBLE. THE OXYGEN SENSOR AND CONVERTOR WILL NOT CAUSE A SKIP. SO, WITH THE INFO YOU GAVE ME, I REALLY CAN NOT TELL YOU WHAT IT MAY BE. GET THIS CAR SCANNED, AND PLEASE GET BACK TO ME WITH THE CODE LIKE PO303 OR PO301,,, SO I CAN ACCURATELY TELL YOU WHAT THE PROBLEM IS,OR WHAT TO CK NEXT..
PLESE WHEN YOU LEAVE THIS SITE WOULD YOU MIND RATTING THIS ANSWER ,THIS WILL HELP ME.THANKS TOM..