do you mean the thermostat
Open the drain out valve at the bottom of the radiator to allow the coolant to run out. Replace the valve and add the fresh coolant.
your dccv (dual climate control valve) is bad. get ready for $300 + labor... it is actually valve controlling flow of coolant to your heater coil... one side is stuck open... unfortunately you have to replace it...
at the Ford dealership, it cost $396.00 to replace.
heater Control valve for 2002 Lincoln Ls
Hope you have small hands and the right tools.
Drive down to your nearest Lincoln Dealer and have a Qualified Technician replace it for you, go back home and enjoy a cold one while its done.
Passenger side, just behind the radiotor, halfway to 3/4 down in the engine bay.
Show me where that air valve control valve is located on a 2000 navigator
The heater control valve in a Mustang is located within the engine. It is right in the heater's core and where the coolant is located.
right front part of engine bay right behind the fan assy, you will find couple coolant hoses going into it...
Remove the heater control valve and replace it.
A 1999 Dodge Ram does not have a water control valve.