Can you be more specific? Do you mean the computer itself? I can't find a listing for a computer switch.

Perhaps I used the the wrong word (switch) because of translation problems. I suggested before that you take out your engine computer and change it for the computer of a similar Jeep. I did that after renewing a lot of sensors and wires and discovered that there were no problems any more. Some time ago you said that first you would change the coil, after that I did not see that you tried to change te enginecomputer, so I suggested it again. Cost you nothing but time.

Ok, sorry, I understand now. Yeah, it's just a matter of getting one to swap out to see if that's the problem. I have friends with Jeeps who live out of state. So it will just be a matter of getting one to see if the computer is the problem.
I appreciate everyone's advice so far!

KGH did you do a compression check yet? You can buy a compression tester for less than 20$ at any auto parts store. I'm telling ya bud, blowing smoke out of the dipstick tube is a very bad thing. That's some serious blowby. My motor went kaput as soon as it started doing that.

Did you try pulling the spark plug wires one at a time while it was running to see if there's a change in the motor? Be CAREFUL!!! I've gotten shocked more than a few times. Wear some gloves and don't touch any part of the vehicle while you do this!!! You want your body to stay grounded!!!