Same vehicle here 125K miles. Congrats on yours!
+1 for the cleaning the throttle body & IAC vlve. 2 bolts to take off the air intake, 3 bolts take off the throttle body, 2 electrical connectors to remove, one vacuum hose.
Unbolt the IAC valve body with a torx head bit. Disconnect the 2 throttle cables. Remove & clean. Clean back of throttle body, butterfly valve & all passages. I use brake parts cleaner but something a little less volitaile is good too like carb cleaner.
I just did the plugs (Champions went back in, gap to .040) & the TB cleanout this weekend. Let me know if you have questions....
You might dump & refresh the antifreeze, brake fluid and do a drain/refill of the tranny, front/rear diff if you don't know when it was last done.
2000 Laredo 4.7L Selec-Trac. 177K miles, Leather, 245 tires, tow package, crappy CD changer, full size spare, roof cross-rails & sunroof.
Changes & fixes: Rear Addco sway bar & greasble bushings, upgraded headlights, upgraded tail lights, new hood struts (replaced 2X), new rear hatchglass struts, new radiator (replaced 3X), new oil pressure sending unit (replaced 4X), 2 new speed sensors, 2 new door lock actuators, new ignition key cylinder, chrome front tow hooks, Mobil 1 Synthetic 5/30, Purolator Pure One oil filter, EBC slotted & dimpled rotors, EBC Greenstuff pads, new front shocks (replaced 3X), new rear shocks (replaced 2X), new IRO steering stabilizer, new timing chain cover, new water pump, thermostat, new thermostat housing, new high pressure power steering hose, Michelin-X radials, new sunroof assembly, new single-piece lug nuts, new exhaust manifold studs & gasket on driver's side, new Durango alternator. Jeepforum.com sticker, Visit cobaltboatsforum.com when you can!