Where do I begin.

Short terminology is yes my xj heats up for some odd reason but I drive 15 minutes to work and want to modify the radiator and dual electric fans. Not fussed.

It had a misfire only at idle. I've replaced 5 sparks and wires and post o2 sensor and the cap and rotor. I couldn't get the other spark because the alternator.

Today I moved the alternator replaced the belt the one spark plug and wire and the pre cat o2 sensor.

Now it not n only had a lititle misfire at idle but driving as well. A tell tale when it was driving really hot few months back.

Changed oil coolant pressure test for coolant new gas cap you name it. Oh and changed the CPS as well because it tripped the Asd like no other...

Any ideas? Change the rotation of timing?

 

First and probably most importantly what year is this thing?
Any codes?
now,
Dude there is a lot going on in your post and I'd really like to help but what is your question exactly?