Recent content by KJJB

Thanks O2 sensors are oem Plugs are OEM NGK ZFR6F-11 Thanks for the reply

Thanks for the reply. I actually did replace the coil pack with a new one but misfire code came back after about a day. Its possible there may be an exhaust leak or cat might be toast.

Hi Folks, I have a 2010 Liberty thats had a P0420 CEL for several months but has been running great.About 240kkms on it now. Replaced O2 sensors but didnt fix the P0420 problem so its been ignored for the last few months. Recently started getting a P0304 misfire on cylinder 4. Replaced spark...