1980 cutlass calais my temp gauge says if accurate it's 2nd line between 100 and 220 so not 220 line just below that never over heats stays the same temp , theres heat but it doesnt come out the defrost, vent, just the bottom, i get vacuum to the switchs from heater to defrost but there hardly anything coming out also the lines under the dash only red, and orange are getting vacuum , why isnt there vacuum getting anywhere else some say its the vacuum selector but could be? none of the lines are leaking , have holes, cracks so is it the vavles them selfs
