Thanks for the reply, yes big k-state fans, new to the jeep world, got it to drive back and forth to work and love it. Absolutely hooked. All plugs, wires, distributor cap, distributor rotor, distributor plate and ignition coil all have been replaced. Didn't do this when I firstgot the jeep about 2 months ago, I will look into the other things you suggested today. Jeep has about 140k on miles, no oil leaks and oil looked good when I changed it. From what I been researching suggest it also could be the coolant sensor, but no engine code is flagged. Again thanks for the reply, jeep runs good enough just misses in higher gears.