Heat Question
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Freshman User
Joined: Feb 2010
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From: Bloomfield, NY
Heat Question
I'm putting the heat back together in my f150 and I'm wondering if I really need the vacuum actuated valve that is in the heater hose between the motor and heater core. I would assume that it is a shut off valve preventing coolant from going through the heater core when the heat is not on but do I really need it? Thanks
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 783
From: Simi Valley, CA
I'm putting the heat back together in my f150 and I'm wondering if I really need the vacuum actuated valve that is in the heater hose between the motor and heater core. I would assume that it is a shut off valve preventing coolant from going through the heater core when the heat is not on but do I really need it? Thanks
D4AZ18495A (replaced D1AZ18495B, C8AZ18495A & C7SZ18495A) .. Heater Water Valve (Motorcraft YG136) / Available from Ford.
This valve is a POS, and has been since day one. Fits myriad 1967/91 Passenger Cars/F100/350's / 1975/91 Econolines & 1978/91 Bronco's. Is notorious for getting stuck open/closed or partially open/closed.
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