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Wendell, while the heater return does return to the
radiator hose, it is not the hose connected to the output side
of the pump (thermostat housing) , but instead the heater return is routed
to the hose from the radiator to the inlet side of the
pump. At least it is in the both the 1986 and 1991 shop manuals I
have. This is a low pressure area whereas the hose from outlet of
waterpump (thermostat housing) to the radiator is in a higher pressure
area.
Ed
Doug,
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