I hadn’t change an AC compressor before (don’t have the tools) and my buddy hasn’t done one of these in a long time, he is a Ford guy and then big truck, we got everything redone.
Heat was a different story, there is a valve that shuts off flow of hot coolant to the front and rear heater cores. The previous owner had bypassed the rear section, so we were just concerned with the front, we it became very obvious that there was a blockage of sorts, the valve would not move manually, so we pulled it off and found rust and **** in there. The truck has almost no coolant and has been running straight water for a long time, this has caused rust and general nastiness inside the cooling system. If I want to do the right thing, it would be to flush the engine using cascade and a lot of effort, then replace both the heater core and radiator, but for now I am thinking I will just flush things as best I can and call it good. At least we know we have flow of “coolant”, even the heater core was flowing. We bypassed the valve and just ram things like a regular heater core, the heat works fine, the AC works great, only outstanding issue is the rear heat, I am sure that it is plugged up too. I will have to fix that as when I swap the body it will be going with it, so for now I have a functioning vehicle and I will probably just leave it that way. I want to spend time on the white diesel Burb, once that is up and running then I will have a decent diesel daily driver that I can use in the winter too.