91 had the dummy light cluster for a week when I bought it drove the jeep around town light never came on. I swapped the cluster for a gauge now the temp rises up to about 240 and creeps up to red line. Put new coolant, new tstat, and hoses. The aux fan kicks on about 220 fuse is good and it still overheats. The clutch fan has good resistance the only thing I can think of is the radiator itself it appears to be the original it has aluminum tanks and or the water pump Before I dump anymore money into her does anybody have any suggestions.