I'm going to guess this was on a pre 87 model. In any case ZERO coolant should flow through the vale when it is closed. If not, it is a bad valve, new or not. Any tiny leakage is most noticeable in 87+ since these have a different dash air flow path. Before then the main dash air vents carried only outside air, fresh. The 87+ pass this air through the heater core at all times. In summer this makes even small leak of coolant heat this air to an annoying degree. I have replaced internally leaking heater valves on many Vanagons, a recently as a few weeks ago. You should be able to blow ZERO air through a new one. Take it back if a new one allows any flow when closed. Mark Roger Sisler wrote: >Hello, I once thought I had a problem with this heater control valve. Took >it out to see. I could blow through it when closed, so I thought it was >bad. I was wrong. The replacement valve also allowed me to blow through it >when closed.I cant explain this, but I put the old one back in and just >adjusted the cable,and all was well.If it is leaking externally it may be a >bad valve. Like said above, adjusting the cable is a bear.I think this >adjustment is near the radio. The heater vent flaps are removable. Look >closely at them and you will see a little black plastic clip that can be >removed. The vent flaps then drop out. You can reapply a foam seal(bus >depot?) for good vent closing in winter and summer.Pray that you dont have >to remove the lower dash cover.I think that when it was designed, they >confused this with a security seal. You will most likely have to break it >to remove it. > > > |
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