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.
What happens if you put heater core hoses backwards?
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.
The upper radiator hose is where the hot coolant enters the radiator from the engine. It cycles through the radiator, cooling as it goes. When it reaches the bottom, it moves out of the radiator through the lower hose and back into the engine to start the cycle once more.
How do I know which heater core hose is inlet and outlet? – Related Questions
Does inlet and outlet matter on a radiator?
Yes it does. They have a baffle or diverter near the flow. So it is imperative that the flow is connected to the inlet port ,and return to the outlet port.
Should radiator valve be on inlet or outlet?
Get to know your radiator valves
Many modern homes will have TRVs – Thermostatic Radiator Valves – attached to most of the radiators on the opposite side from the lockshield valves. A TRV should always be fitted to the inlet on the radiator and the LSV to the outlet.
Which hose is the inlet hose?
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.
Is the radiator inlet hose the upper hose?
The upper radiator hose is connected to the thermostat housing and to the radiator. From the bottom of the radiator, is the lower radiator hose that is directed to the water pump. Powered by the vehicle’s water pump, the engine coolant loses its heat after passing through the radiator.
In fact in most modern cars it runs side to side, even though the inlet is at the top the flow is crosswise. Sometimes this is divided in to sections that flow first one way then the other. There are also cars out there that have the thermostat at the bottom and radiators that inlet at the bottom and outlet at the top.
What 2 hoses are on the bottom of the radiator?
The two hoses are the transmission oil cooler lines that run from transmission steel lines to the radiator oil cooler connections. They need to be high pressure power steering type hoses to hold transmission pressures.
What is the big hose from radiator to engine?
Overflow Hose:
The overflow hose types connect the radiator pressure cap and the overflow tank. As pressure happens to the hot coolant in the radiator and its expansion, the pressure cap open and hot coolant is bled off. The coolant follows through the overflow hose to the tank. This hose is also a heater hose.
Does it matter which pipe goes where on a radiator?
Most modern thermostatic radiator valves are bi-directional – so can be fitted on either the flow or return pipe of your radiator. However, it’s always best practice to fit the TRV on the flow pipe that enters your radiator.
What does it mean if your top radiator hose is hot bottom is cold?
This can be a restricted radiator or a water pump with worn off impeller fins. If you remove and test the thermostat to be okay, then flush the radiator with both hoses disconnected to see if a lot of scale or debris is blocking it using a garden hose.
With the engine off, open your hood and locate the water pump pulley. With gloves on, grab it and wiggle it back and forth. There should be no movement, if there is, this along with the noise is a good indication you may have a water pump problem.
How do I know if my radiator is blocked not circulating coolant?
5 Symptoms Of A Clogged Or Bad Car Radiator
Temperature Gauge Reading Higher Than Normal: The temperature gauge indicates the temperature of a car coolant.
Radiator Leaking Coolant:
Radiator Hose Troubles:
Coolant Color Change:
Radiator Fins Bent or Broken:
What are symptoms of a failing water pump?
6 signs your water pump is failing
Coolant Leak. The water pump has several gaskets that can be damaged or worn out over time.
Engine Overheating.
High Pitched, Harmonic Whining Noises.
Water Pump Rust and Corrosion.
Steam comes out from under your hood.
Holes or leakage system on the dry side of the water pump.
What are the 3 ways a water pump can fail?
THE MOST COMMON DAMAGE TO A WATER PUMP: CAUSES AND CORRECTIVE ACTIONS
IMPROPER USE OF SEALS/GASKETS OR SEALANT.
BAD OR WRONG COOLANT.
DEFECTIVE OR IMPROPERLY INSTALLED BELT DRIVE COMPONENTS.
What does a bad water pump sound like when accelerating?
What sound does a bad water pump make? Any high-pitched sound, or an increasingly loud whining sound as you accelerate is usually coming from the car water pump. The same sound happens when a belt is loose, or the bearings are bad. No matter which of these it is, getting your car to the mechanic is a must.