Just picked up a 90' MJ base 4.0 AX15 NP231, had not run in a while. Got it started. No heat coming out of the heater controls. Looks like it was converted to a open system, radiator has a cap and a overflow bottle that is zip tied to the AC delete bracket. The blower motor works, the heater controls work somewhat, I can get vent air blower on, I can get defrost air blower on, appears that there is no floor air coming out of the black box with two square holes. Looked at the heater hoses, there is a valve spliced into one that has a valve in it but not connected to anything to control it. I am going to flush and install a new thermostat, the bad thing about the truck is it has idiot lights no gauges. So I can't tell anything, it doesn't even have a tach.
93 YJ 5.2L Magnum, Custom rear bumper & swing out tire carrier, Ford Explorer electric seats, Ford 8.8, TW DS, SYE, NV231D, Autometer gauges, Rhinolined interior,Bushwacker flares, LED Lighting all around, MT Classic II, BFG 32/11.50/15, Warrior Body Armour, ZJ PV, DD BB, 52mm TB, Ford 23# Injectors, HS 1.7 RR, KC lights, RE Xpress 4" lift