There is no valve, it is probably clogged up.
Heater Core is the likely culprit
Make sure there is vacuum going into the passanger compartment. There should be a vacuum line from the intake manifold goung into the cab. GoodluckJoe
Yes, replacing the heater core should slove the problem.
It should be in the heater blower motor case which is located under the glovebox.
Sorry bad news Your heater core has a leak
they should be coming to the dealers by March.
What does the 20 amp power outlet fuse do on a 1999 dodge durango
how do I replace block heater on 1995 dodge ram 2500
does anybody know where block heater on 2007 dodge magnum is if there is one
Generally no. The amount of heat is small, but you should hear a buzzing noise when the heater is running. Mark
There is none
Disconnect the inlet and outlet hose going to the heater core, and connect them together. Do not plug either hose, just simply connect them together. Go to an auto parts store and tell them what you want to do. They can supply the proper connector and clamps. The inlet and outlet hoses are located, passenger side, entering the firewall.