While driving the wife's '87 300TD home from the annual holiday trip to the big city I noticed I had cold feet. Upon inspection I discovered there was no heat coming from the floor registers. Plenty coming out of the dash ones though.

Any thoughts, insights?

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300TD W124, Two VW TDI Passat Wagons,Cummins Ram 250, Kubota Tractor
23 cylinders sipping the sweet sauce of the soy bean