MERCURY MARQUIS HEATER CONTROL VALVE LOCATION

The Heat/defrost Does Not Work On Car. I Flushed Heater Core Out And It Flows Well. The Air Blows Out Of Heater Box With Heat Turned On....

Defrost, Vent And Or Heater Will Blow Warm Then Hot Air Until The Car Reacheds Normal Operating Temperature Then It Only Blows Cold Air- A...