Mystery Van
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Mystery Van
My 92 E-150 351cuin will not put out any heat, front or rear. I've changed everything on the cooling system. Even the rad. Thermostat and water pump and heater core have been changed more than once. Any ideas?
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Joined: Sep 2003
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I'm not sure what controls the heat in your van, but it may a vacuum controled switch system. If it is bad, then the right valves may not be opening.
Some vehicles have a vac controled valve in the heater hose. some are controled at the dash with vac.
Some vehicles have a vac controled valve in the heater hose. some are controled at the dash with vac.
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Joined: Jan 2005
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From: Augusta, Maine
First thing I would check is wether Hot water is making it to the heater core. If the hose to and from the heater core is hot it would be safe to assume then that you do have hot water circulating to the heater core. If the heater box to and from hoses are not hot check for any restrictions in the hoses. And that any valves controlling water to the heater box are working. So lets say you have do have hot water circulating through the heater box, Then you need to check the damper mechanism that regulates the amount of cold air and hot air from the heater box. On the older Ford vans that I am experienced with, you can see the cold/warm air cable if you put your head by the passenger side floor and look up under the dash. If you move the temperature control back and forth you should either see or hear a cable moving the damper. If you hear an air leak down there, you may have a broken house. If it's a wire cable, like mine you can just move the hot/cold damper with a pair of pliers, - Manual control. Hope some of that helps.
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Originally Posted by Elmie
My 92 E-150 351cuin will not put out any heat, front or rear. I've changed everything on the cooling system. Even the rad. Thermostat and water pump and heater core have been changed more than once. Any ideas?
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Joined: Jan 2005
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From: Augusta, Maine
Good luck, I wouldn't be surprised if one of those funky connectors did get plugged. You don't have much to lose by disconnecting the hoses, except a little antifreeze. I think the funky connectors have O rings, Make sure they are in excellent condition before you put it back together
