Need Help with Heater problem.
Today I flushed and changed the coolant on the used Jeep Grand Cherokee with 4.0 engine that i just bought a few weeks ago. Also installed a new thermostat ( old one was ok i just wanted a new fail safe one before winter). Everything went good except after all was done i noticed when driving down the road the heat coming out of the vents was hot but after coming to a stop the heat was not as hot, more like just warm. First thing that came to mind was the water pump however the temp gauge reads normal driving or at idle. Any ideas why its doing this or is it normal?