Well I tried several times but could never get my heater core to flow good. Tried a water hose, compressed air, even a steam cleaner pressure washer with no luck.
So today my dash had a out of vehicle experiance. I replced the heater core, evap core (figured I might as well since I was already in there and also replaced the recirc door/housing and the door actuators.
After all was said and done, I now have heat, and I wanted to see what the old heater core looked like inside. So heres the pic:
I also found the evap core was pretty nasty and partly stopped up with debris. Pic:
Just figured I would share the pics so people could see. If you tried flushing your heater core with no luck, I bet it probably looks like mine.
'93 YJ 4.0L, AX-15, NP-231HD/SYE, 8.8in rear, OME 2.5 lift, WJ knuckle/brake conversion, hydroboost. Warn M10000 winch. Hope to some day build a stroker for it.
'79 Cherokee Chief, 401 MPFI fuel injection, T-18/D-20 and hydroboost. Otherwise stock.
Future mods: NV4500, NP205, high pinion D60 front and smooth bottom D60 rear, e-lockers front & rear. SOA with 35X12.50's