2003 Ford Ranger Missing at High RPMs with Codes P0305 and P0316
My 2003 Ford Ranger starts missing when driving over 55 mph, and the issue worsens when revving past 3000 RPM. The OBD2 diagnostic scanner shows persistent error codes P0305 and P0316. I've already replaced the spark plugs, ignition wires, and fuel filter, but the codes remain. Could this be due to a faulty coil pack or a malfunctioning fuel injector?
The issue could be related to a faulty coil pack, but it might also stem from combustion pressure leaks or vacuum leaks. These are common causes of misfires and should be checked during diagnosis.