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Hello everyone, just wanted to provide an update for anyone that might have the same problem as me in the future. I purchased a PCM off of Ebay, where the seller offers free programming and installed it today. Well it did fix my misfire issue immediately. Thanks everyone for your help.

Yeah I am definitely leaning towards the PCM. I have been reading that A1 Cardone's are pretty much the only half way reliable option, besides the dealer who wants $2000 for a new one. Who do you guys recommend for a PCM and programming. I was checking Ebay and see that there are some sellers...

Ok, a bad coil driver would mean a PCM replacement? Could the original bad coil on cylinder #4 have shorted out the coil driver in the PCM? Should I not be looking at the crankshaft position sensor or camshaft position sensor?

Hello Everyone, I just recently purchased a 2004 Jeep Liberty with 3,7L engine. The engine has a rough idle and 2 CEL codes P0304 and P2311. I have given the Liberty a full tune up with new plugs and tested and swapped the coil on cylinder number 4. the coil was bad and replaced with a new and...