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Car Forum / Dodge / Dodge Cars / January 200994 Caravan heater blows cold
My 94 Caravan blows only cold air no matter what I set the temp for. I know I am getting hot water thru the heater core. And, it only seems to blow out the defroster and floor ports no matter what vents I have selected. I think there's a problem with one or more of the vacuum powered dashpots inside the air plenum. How can I get to these? They are all enclosed inside a self contained A/C - heat box. Is this a common problem ?? Cold Jim : My 94 Caravan blows only cold air no matter what I set the temp for. I know : I am getting hot water thru the heater core. And, it only seems to blow out : the defroster and floor ports no matter what vents I have selected. I think : there's a problem with one or more of the vacuum powered dashpots inside the : air plenum. How can I get to these? They are all enclosed inside a self : contained A/C - heat box. Is this a common problem ?? Are you getting enough hot water? If the core is restricted you will get hot water but not enough to heat the air. >: My 94 Caravan blows only cold air no matter what I set the temp for. I >know [quoted text clipped - 9 lines] >Are you getting enough hot water? If the core is restricted you will get >hot water but not enough to heat the air. And if the rad is low, water flow will be minimal. No, water is not the issue. I'm sure the door that allows air to cross the heater core isn't opening. It's just recirculating cold air in and out. And I always get air out of the defroster outlet, regardless of what I have selected on the control panel >>: My 94 Caravan blows only cold air no matter what I set the temp for. I >>know [quoted text clipped - 11 lines] >> > And if the rad is low, water flow will be minimal. >No, water is not the issue. I'm sure the door that allows air to cross the >heater core isn't opening. It's just recirculating cold air in and out. And [quoted text clipped - 16 lines] >>> >> And if the rad is low, water flow will be minimal. Make sure you don't have a vacuum leak - like a split hose. > My 94 Caravan blows only cold air no matter what I set the temp for. I know > I am getting hot water thru the heater core. And, it only seems to blow out [quoted text clipped - 4 lines] > > Cold Jim the heater core is a common problem with the 1991 to 1994 caravans flush the heater core with water in reverse Would this help a problem where it's not getting off a lot of heat except when going over about 45mph? My 92 Caravan doesn't get all that warm these days. When I'm going slow or sitting at a stoplight the heat coming out is noticeably cooler. Thanks, Wesley the heater core is a common problem with the 1991 to 1994 caravans flush the heater core with water in reverse > Would this help a problem where it's not getting off a lot of heat except > when going over about 45mph? My 92 Caravan doesn't get all that warm these [quoted text clipped - 7 lines] > the heater core is a common problem with the 1991 to 1994 caravans > flush the heater core with water in reverse my 92 had the same problem i got a bottle of flush and ran it through the entire system and flushed the heater core with water both ways and it fixed the problem and the heat works good now try it it may work for you to |
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