Novak Conversions Jeep Wrangler JK radiators

Misfire 2012 JKU OBD scan files attached

Gatorlaw

Member
Joined
Sep 6, 2021
Messages
26
Location
Florida
Looked through the threads. I’ve changed the plugs and coils. I still get an intermittent misfire in start up. Not every time but often enough. If I shut the engine off and restart the misfire is gone and runs fine. I am at a loss and don’t want to toss parts to fix not knowing if that’s the issue. I’d rather spend the money on other mods but I want this fixed. I attach pics from the monitor scan to see if anything stands out as problematic. I appreciate the assistance.

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Yes to both. Like I said I can have no code for days then one morning on startup it reappears during warm up. I turn the car off and restart and it runs smooth. The code only gives a P0300, occasionally it will give a 0301 or 0305 (specific cylinder) but again restart, clear codes and good for a day, two, maybe a week and then shows up.
 
Novak Conversions Jeep Wrangler JK radiators