Driving home the other day, not beating on my car at all, the engine began sounding like a cylinder wasn't working. Woke up the next day with the intention of finding the problem.....5 days later still not working.
It starts right up but idles erratic, almost like its going to die. Ran a scanner tool and got the following codes:
P0306 Cylinder 6 Misfire
P0155 O2 Sensor Heater Circuit
My thought is that an 02 sensor alone would not make one cylinder misfire/fail. I took apart the whole intake (except for manifold) and cleaned everything from hoses to ICV. All hoses and electrical connections are in top condition. Ignition coil on cylinder 6 was replaced and swapped plugs to see if they were faulty....both fine.
Anyone have any idea to what my problem could be?
My next step is to take apart the fuel rail and look at the injectors....but could that really cause my problem?????