the vacuum hose connects to the airbox
The Grand Cherokee is notorious for failures of the air flow control. However the Cherokee has the same basic problem. The blend door has a tendency to break, killing control over air flow through the heater core. The fix is fairly simple with the kit from HeaterTreater. Check the product at heatertreater.net.
In line on the heater hoses on the passenger side of the engine. Has a small vacuum line to it and both heater hoses go through it. The heater hoses are smaller than the radiator hoses and go through the firwall.
No, it is not required. You can remove it and splice the heater hoses together.
No, the XJ Cherokee does not have the same heater box as a WJ Grand Cherokee.
if you are referring to the door that controls inlet air vs recirculated air, it is located inside the heater assembly its self. if you're trying to figure the hot/cold mix, there ISNT a mix door - heat control is adjusted by limiting the flow of hot engine coolant through the heater core by a mechanical ball valve ( usually found on the front of the firewall, right where the heater hoses pass though)
The Grand Cherokee is notorious for failures of the air flow control. However the Cherokee has the same basic problem. The blend door has a tendency to break, killing control over air flow through the heater core. The fix is fairly simple with the kit from HeaterTreater. Check the product at heatertreater.net.
On a 4.0L, yes one of the heater hoses does.
In line on the heater hoses on the passenger side of the engine. Has a small vacuum line to it and both heater hoses go through it. The heater hoses are smaller than the radiator hoses and go through the firwall.
No, it is not required. You can remove it and splice the heater hoses together.
The temp control door is on a vertical axis on the Cherokee(XJ), and the control motor is on the bottom of the heater box under the passenger side dash. Check heatertreater.net for pictures and diagnostic information for this system.
To connect a heater control valve on a mark 5 fiesta all the terminals must be correctly connected. The color coding is used to ensure that the terminals are correctly connected.
thats the heater control valve
No. one heater core, two airflow control doors. Called blend doors, very prone to breaking.
It goes to the ac/heater control head.
Remove the two hoses that go through the firewall to the heater. Connect these two hoses together.
It does not have a heater control valve.It does not have a heater control valve.
A heater control valve is simply a water valve which allows more or less water to circulate through the heater core, depending on how much the valve is opened. When the engine warms up it heats coolant (mostly water) in the water jacket of the engine. To keep the engine from overheating, the water pump circulates water through the radiator once the engine temperature reaches the set-point of the thermostat. When it's cold outside the engine STILL reaches a temperature that allows you to make use of the engine heat when you open the water valve of the heater. Heater control valves take many forms but basically they all do the same thing; they open to allow heated engine coolant to circulate through the heater core or they close to stop the coolant from flowing. Heater control valves can be manual (cable controlled or even lever controlled), vacuum (which allows the engine vacuum to control the position of the heater control valve based on where you set the control knob) or electrical which allows for greater flexibility and even allows the auto manufacturer to connect the heater controls to a computer or other electronic control device.