Replaced coil. Wires. Plugs. Crank shaft sensor.
Should I buy a new PCM?

I'm lost here.

2007 jk

Any help would be great.

 

I also replaced all 4 o2 sensors

 

I will try to help out, as my 08 is currently in a multiple cylinder misfire state itself. I too changed the plugs, and wires while I had the battery box out doing an ERG valve change. From what I can gather, there are lots of ways these engines can have multiple misfires. Have you considered a plugged cat yet? I am unsure how we will check them, but mine was making a rattling sound at start up like the exhaust was loose and vibrating on something underneath the jeep. Once it warmed up, it would go away. Would be a total coincidence if the misfires came right as I was changing the ERG valve, but I guess its possible. Any help, or ground I gain I will post on here for you to try as well. Good luck, hopefully someone who has been through this will chime in soon too.

 

Actually I put long tubes on it and changed my upper and lower intake gaskets.

It's not throwing a cat code just the heater codes. From what I gathered it's my Pcm... But if my new pcm doesn't work I'm gonna just take it to a shop. However I'll have to replace my long tubes and buy cats and then take it to a shop for 75 an hour.

But you might want to see if u are leaking coolant... Mine was worse when coolant was leaking into the intake and burning.

Smelled so bad.

I'll keep my post updated.

 

these are the same codes I have

Those are the grounds that need checked

 

I may very well be losing coolant. I added some a while back and checked again this weekend and it was low again. No spots under the Jeep ever. Sounds like there is an intake gasket that may need some attention?