Cylinder 3&4 misfire under 2k rpms HELP!

I have a 2000 jeep grand Cherokee Laredo inline 6 4.0 with roughly 260k miles on it, it’s my daily driver and I don’t have funds for a shop so here we are, I’ve been chasing this issue for about a month now, it’s started with a rough idle and check engine light, I got it checked at my local OReilly and they said crank position sensor so I did that, new spark plugs and also a new coil pack, trying to chase the issue, it ran great for about 20 miles yesterday after the coil pack, and I’m starting to run out of money so I don’t want to just keep throwing money at it, it misfires under 2k rpm’s but after that the misfire goes away, any idea what it is I’ve eliminated cracked head or vacuum leak as the main problem but not sure where else to go besides dumping money into injection and fuel. Any help at all would be greatly appreciated I’m not the most mechanically minded but being a YouTube mechanic doesn’t seem to help at the moment

 

There’s also a consistent but quiet tick in the engine bay while idling, hoping not a rod???

 

I had a miss fire replaced a lot of sensors and parts ended up one of the O2 sensor I purchased from a cheap store was crap. I got a new O2 sensor from Napa running great again.



DON’T buy cheap parts!!!