I did some reading online and found one person talked about the vacuum line that controls the 4wd actuator being cut and it caused a simular problem. Light bulb went off and remember not seeing any lights on the 4wd switch. So checked the switch and it won't do a think and no lights on it. Also I get under the hood and soon enough I find the vacuum hose not where it is suppose to be. I put it back togather. My guess is the switch is bad. I also decided to try pulling cylinder number 4 wire off the cap because I notice how its connected with number 5 on the cap. It doesn't change a thing like cylinder and the other ones make it run worse so I have got it down to Cylinder 4 and 5. Plugs and wires are fine.

 

First thing is first, check your firing order. Then pull one wire at a time.

 

Well last night a light bulb went off and I got to thinking and I should have tried it when I seen cylinder 5. I tried pulling the plug wire that it is connected to the cap. Believe it or not I tried every plug except that one. I was in a conversation on my bluetooth so was distracted. Soon enough I discovered it wasn't fireing too. Hmmm.. well rotor cap came to mind but I was too scared to go spend the money so thought I would research it and a few people had the same problem and was the cap. Bought a new cap and the misfire is gone. Cleared the code and it stayed off. Im definitly happy with the outcome seeing origonaly we bought the vehicle that was belived to be a rod and turned into a cap, cat, and sensor. Thank you guys for your advice. Definitly will be enjoying the jimmy for awhile.

 

Glad you're making progress. Did you put a dab of silicone dielectric grease on each terminal, (inside and out) of the cap? It will help prevent crossfire inside the cap and reduce corrosion on the terminals. Better check camshaft retard too. It can be off up to about 13 degrees and NOT turn the SES light on. If it's out of spec, (zero degrees +or- 2 degrees) it will cause crossfire in the cap, (P0300 series DTC's) and also cause the cap to crap out prematurely. Gotta have a high end scan tool, I doubt that the Actron will access the data stream.

 

Hopefully soon we will be bringing the jimmy back to daves. He has a lot of fancy stuff like 5k computer stuff lol. I will have to consider doing that to the rotor cap. Figure if the other one fouled out that quick wouldn't be bad to prevent it happing to this one.

 

Equally as important, maybe more, to have camshaft retard within spec.

 

Glad you got it worked out!