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@theheap How many plugs are on your pcm? You can call me to discuss in further detail if you’d like.

@FadeToGray How is your shifting from 1st to 2nd when cold? Any other intermittent codes? You can call me to discuss in further detail at 866-888-7710. Thanks, Mark

It was nice speaking to you @LngJeep. I will update you once we receive the pcm. Thanks, Mark

@rdharms It sounds like the PCMs has failed you. Faulty o2 sensor readings, loss of gauges and stalling while driving are the common failures. Are you having issues with the lockers activating?

Faulty spark plugs or wires, Faulty coil (pack), Faulty oxygen sensor(s), Faulty fuel injector(s), Burned exhaust valve, Faulty catalytic converter(s), Stuck/blocked/leaking EGR valve / passages, Faulty camshaft position sensor or Defective computer. It could be any of the above.

I can test the ecm if you’d like to send it into me. We can run it in one of our jeeps and the turnaround time is 24 hours.

What year is your jeep? It is not very common for a p0300 code to be in the pcm.

@SolarYellowshortbuss It could be the pcm that is causing the issues. I can test yours if you would like to send it into us.

Welcome to the forum! Here are some possibilities for the p0463 code- How old is your battery? I can test your pcm if you would like to send it into us.

Faulty spark plugs or wires Faulty coil (pack) Faulty oxygen sensor(s) Faulty fuel injector(s) Burned exhaust valve Faulty catalytic converter(s) Stuck/blocked/leaking EGR valve / passages Faulty camshaft position sensor Defective computer. Here is a list of things to check. I can test the...

The p0300 codes generally are not in the ecm. There is a long list of possibilities on that one.

@Jellis is p0306 the only code you are getting? Any other symptoms?

It will work fine.

You can switch the PCMs what year is the xj computer?

Here is the fix for HP. https://forum.hptuners.com/showthread.php?50306-Neon-SRT-4-Can-read-tune-out-of-PCM-but-can-t-write-Erase-Failed/page2

Lord have mercy on the rodeo clowns! You can use BR549 to save 5% on your pcm purchase. “If it weren’t for bad luck, I’d have no luck at all. Gloom, despair, and agony on me!”

@crussell85 It was nice chatting with you on LiveChat. Send that ecm into us and we will attempt to repair it for you! Thanks, Mark

@DennisWuest What is the date on your battery? Are you getting any codes? How is the shifting from 1st to 2nd when cold?

They do not have many issues. There are three caps that I would recommend changing as they tend to leak on the board over the years.

Our address is: Wranglerfix 6191 Orange Drive Suite 6177N Davie, Fl 33314