PONTIAC SUNFIRE TROUBLE CODE

I Have A 03 Pontiac Sunfire, Pulled An P0300 Code (random Misfire) And A Bad Cat Code. I Replaced The Upstream O2 Sensor And The Cat Code...

Looked At Almost Everything That Relates To These Codes And I Can't Find Anything Wrong But I Got A Bad Miss. What Is The Chance I Got A Bad...

Have An 04 Sunfire, Check Engine Light Keeps Coming On With The Code P0442. We Have Changed The Gas Cap And The Vent Valve, There Is No...

Check Engine Light Keeps Coming On With The Odb2 Code Of P0202. What Needs To Be Done To Repair It?

I Was Just Wondering What My Next Step Should Be On The Repair Of This Car. I've Replaced The Plugs, Wires, O2 Sensor, The Injetors Are...

What Should I Check And How Do I Go About Trying To Fix The Problem? When I Start My Car It Will Turn Off Unless I Rev The Engine For A...

The Cod P0107 Will It Affct My Pontiac To Not Turn