Which heater hose is the inlet?
The inlet hose for your heating system is the hose that goes to the water pump area. The other hose is the outlet. These flush kits will actually work on either one though as it does go through the entire cooling system.
Are both heater core hoses supposed to be hot?
The coolant temperature should hit at least 160°, preferably 180° to 220°. If coolant temperature is acceptable, feel both heater hoses, which should be hot.
Can you hook up a heater core wrong?
You would effectively back flush your heater core temporarily. The scale and any gunk would be logged loose and now circulating in your cooling system likely to clog the radiator and possibly the core too. It also isn’t designed to be as efficient with fluid going backwards through it.
What is the ID of 5/8 heater hose?
PRO 1 Heater Hose 5/8 Inch Inside Diameter X 6 Feet Length 052615C.
What does it mean when both heater core hoses are hot?
If both heater hoses are hot then the core is getting hot coolant flowing through it. You should check the temperature blend door actuator behind the glove box on heater case to see if it is operating the temperature blend door or not. If the actuator is not moving then replace actuator and retest the heater output.
What happens if you mix up heater core hoses?
Which side of heater core is Inlet?
The water pipe (goes across the top of the engine) is the inlet of the hot coolant for the heater core. The other hose connects to a metal pipe that runs horizontally to the front of the engine. This goes to the inlet side of the pump, through which it returns to the engine. This is the outlet from the heater core.
Does it matter which way heater core hoses go?
The core will heat up no matter which direction. However, some heater control valves are directional, usually they have an arrow on them to indicate direction, and will function better if installed correctly.
What is a heater hose assembly?
Heater hoses are rubber hoses that circulate engine coolant to and from the heater core, which is the small radiator that provides heat for the cabin. They typically extend from the engine to the firewall, because the core is located inside the vehicle’s dashboard.
Does it matter if heater core hoses are backwards?
The normal flow of coolant is from the top of the engine into the heater core and back to the water pump. By reversing the hoses, the coolant will flow in reverse direction through the core, but it’ll still be flowing in the same direction as far as the engine is concerned. …
Does coolant flow through heater core when heater is off?
If the system is not equipped with a heater control valve, coolant will circulate through the heater core when the heater is turned off. The easy way to tell if coolant is circulating through the heater core is to warm up the engine with the heater turned off and the temperature set to the coolest setting.
Does it matter which way a heater core flows?
No, it makes no difference whatsoever which direction the water flows through the heater core.