I bought a 97 7.3 last year. I toughed it out last year but once again its 40 below and I'm friggin tired of my feet freezing!!!
My truck has a rear auxillary heater and it kicks a$$, but it doesn't get heat down to the floor. I checked my heater core today and back flushed it and it flows great. I am now down to assuming that whatever jack a$$ that installed the aux heater routed the collant to it before the heater core. Tried re-routing it and did not help.
Anyone have a diagram of the flow that actually shows the heater core? I'm guessing I should just replace the dang core but I would love to save the 90 bucks if I can! Any ideas?