2002 Pathfinder overheating when idling

[mjamison]

The temperature gauge of my 2002 Pathfinder started to rise, as if it wants to overheat, about 6weeks ago when I turned on my ac. When I turned the ac off, the gauge went down. As of last week, the gauge rose when the truck idles or is driven within the city, (not highway).
I've replaced the Radiator& cap, the Thermostat & the Fan clutch; I'm still having the Same Problem!
Can Anyone HELP PLEASE??!

[Buzzman]

Couple of things come to mind.
When the truck gets warmed up, check the upper and lower rad hose with your hand and see how hot they feel.
Also, (not sure if this is entirely safe or not), but run the truck up to temp with the rad cap off, and then see if the coolant is flowing.
Lastly, you may still have some air in the system as well.