Join Date: Oct 2004
Location: Russellville, ar
Try this, there are only 3 screws holding your blower motor on and it's easy access in the passenger area. Next time it acts up again, drop those 3 screws and with a flashlight you can actually see the Evaporator and know if it is freezing. Also, you can stick your hand up there and feel for water. Same with shop vac or air hose nozzle or even a garden hose to make sure it is flowing out good.
2nd part would be to see if you have a cabin filter, low airflow across the evap can cause it to freeze up as well and a dirty cabin filter would cause this. The cabin filter is located underneath the wiper cowl on the outside of the jeep. They did not come from the factory with them, it was a dealer installed option.
3rd would be to get a set of gauges and see what the actual readings are to rule out any other issues. Good Luck!