Thanks for the reply. Yes it’s an N62. It’s ridiculously cold out, 20ish F. I ran distilled water through it twice after draining the tainted coolant. I did this prior to changing the aux pump and heat control valve. Both were totally clogged. I pushed fluid and air through the heater core. After doing so I now have heat. I drove for about 40 minutes, felt the lower hose and it was maybe 100ish F. Used my hand. My scan tool tells me the coolant temp at the sensor never rises above low 220 before the fan comes on.