I reread your original post. When the AC is on, there is an aux fan that comes on to assist the primary fan. If it doesn't overheat when moving, something is telling me that it isn't coming on. The AC, adding and extra load to the engine, would just make things worse even with the aux fan.
If that fan is working, then we need to check basic things such as the thermostat.
Saturday, July 31st, 2010 AT 12:03 AM