air cond
I don't think you'd necessarily have to change the blower motor.. you said it never quits running, right?
I'd pull it and look around in there with a mirror and a flashlight, though..
Thanks for your replay. Today I took off the fan motor and inside was relatively clean, just a little dusty, not bad for 200k. I was expecting to find it clogged but not came out, even after I blow off it a electrical blower! As I just changed the IDM, valve cover gasket and the injectors harness, I need to purge the air in the fuel (already purged the oil)
, them drive it for couple of hours ( I have to go to Miami, it will give me a good idea if the air is fixed). One thing I learn about those truck.... as long you do not need to touch it, there will be a long lasting endurance on most of the parts, but once you start to work on it, and touch it, bingo!!