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What is your question?
Car is actually an 86 Parisienne,but no category here.Heater core is not clogged.Zero heat in car.Am I correct that the next possible faulty item is the vacuum controlled valve at one end of a heater hose?One hose hot, one hose cold. Thanks.
Thank you for researching.The core is clear-I disconnected the lines and attached two pieces of hose,ran a garden hose through it-AOK.The car does have a vacuum controlled valve on the manifold, to which one hose attaches.Vacuum is present when the heat is off, not there when on,so I'm assuming a stuck valve. Update: I replaced the heat valve-problem solved.Thank you again for consulting your manual.