I had this P0300 and P problem for months Purchased a 02 Jeep Wrangler Sport 40L Auto that had this problem Read a lot on the forums and went down the same path that it looks like most of us have done Replaced Plugs Did a compression check (good) Replaced Coil Rail I replaced the distributor cap, the rotor and the throttle positioning sensor, and the truck is still running as rough as it was, but the P0300 code is gone now NOW, I have a P0705 code that according to google and a couple of Jeep forums should be a transmission range sensor circuit malfunction or the neutral safety switch P0300 fix 02 Wrangler 40L Finally fixed my P0300 engine light!
Jeep Patriot Pcv Valve Replacement Guide 07 To 16 Model Years 2 0l I4 Engine Picture Illustrated Automotive Maintenance Diy Instructions
