The bypass hose is to allow circulation of coolant until the engine warms up enough to open the thermostat. When you remove the bypass hose, you have to have some type of recirculation to happen, or you will induce hot spots, air, etc., in the system causing temps to spike up and down erratically.
What is the purpose of a coolant bypass valve?
How do you replace a bypass hose?
- Jack up the front of the car and lower it onto jack stands below the two front tires. Place a drain pan under the radiator drain valve.
- Use a screwdriver to loosen the bypass hose clamps and remove the hose.
- Install a new hose and tighten the clamps.
When is it time to replace my coolant hoses?
What can you do to prevent failure in your vehicle’s hoses:
- When the engine is cool, gently squeeze hoses between your thumb and forefinger near each clamp where most degradation occurs. ...
- When the engine is cool, check the coolant level to ensure it is at the proper cold level. ...
- Inspect hoses for cracks, divots, bulges, or collapsed areas, oil and coolant contamination, or wearing near connection areas.
Why is it leaking coolant?
If the reservoir cracks or develops any small leaks it can cause the coolant it is storing to leak or evaporate at a slow rate. The leaks may be small enough that they may not be obvious to the driver, however, over time they will cause the reservoir to empty out.
How to siphon coolant?
Thermo-syphon Cooling System – Working , Diagram , Advantages
- Thermo-syphon water cooling system is based on the fact that water becomes light on heating. ...
- The top and bottom of the radiator are connected to the top and bottom of the cylinder water jacket respectively with the help of pipes.
- The radiator is cooled by causing air to flow over it. ...
Do you need a coolant bypass hose?
Without a bypass route, the coolant would dead-head against a closed thermostat. Should the thermostat stick closed, the same problem would occur and the pump could cavitate, or form air pockets, which could destroy the water pump. Replacing the coolant bypass hose will help ensure this doesn't happen.
What is a coolant bypass tube?
The coolant bypass pipe or hose directs coolant flow through the engine based on different conditions of the engine, like a traffic guard who directs traffic into an optimal flow. In the engine, this flow is directed by the thermostat, which closes when cooled.
Do you need the bypass hose on BBC?
The bypass is necessary to allow a small amount of water to circulate when the thermostat is closed. Without a buypass the opening of the thermostat would be delayed and the engine could develop hot spots or even steam pockets before the stat opens.
Where is the coolant bypass hose?
0:537:36Thermostat Bypass Hose Honda - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo pretty much just a little short one it comes off the thermostat housing this is the thermostatMoreSo pretty much just a little short one it comes off the thermostat housing this is the thermostat housing right here and it goes up over into the intake manifold.
How much does it cost to replace coolant bypass valve?
The average cost for heater control valve replacement is between $465 and $488. Labor costs are estimated between $86 and $108 while parts are priced at $379. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location. Related repairs may also be needed.
Does coolant go to heater core?
The heater core has tubes that circulate hot engine coolant through them before the coolant is returned to the radiator. Air blows over the hot coolant to warm it before it's blown through your vehicle's vents.
How important is a coolant bypass valve?
The bypass feature allows water to flow around the engine, without passing through the radiator, while the thermostat is shut. Without it, the water will not circulate correctly creating hot spots around the engine which could lead to damage.
How much does it cost to fix a coolant hose?
The Best in Auto Repair The average cost for radiator hose replacement is between $407 and $429. Labor costs are estimated between $82 and $103 while parts are priced at $326. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.
How much does it cost to replace a heater hose?
between $150 and $250When heater hoses need to be replaced, the average cost is between $150 and $250, but may be more depending on the make and model. Because coolant constantly circulates through the heater hoses, it doesn't matter whether you use the heat or not – they deteriorate just the same.
What are 10 common causes of overheating?
Common reasons for overheating enginesToo little or no coolant. Driving without proper levels of coolant/antifreeze may cause a coolant system failure. ... Cooling system leaks. ... A broken water pump. ... Radiator issues. ... Oil too low. ... Thermostat failure. ... Issues with the belts and hoses. ... Heater core is plugged up.
What is the thermostat housing?
The thermostat housing is responsible for regulating coolant intake inside the engine bay. Coolant is responsible for transferring the heat of the engine out to the radiator bay to be dispersed into the air.
How do you install fleece coolant bypass?
11:0818:13Coolant Bypass Kit by Fleece Performance Install - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe or the thermostat riser block. You're going to want the part of the riser from fleece that isMoreThe or the thermostat riser block. You're going to want the part of the riser from fleece that is smooth nonno ring it will go against the thermostat now before you install.
What is a coolant bypass pipe?
The coolant bypass pipe or hose directs coolant flow through the engine based on different conditions of the engine, like a traffic guard who directs traffic into an optimal flow. In the engine, this flow is directed by the thermostat, which closes when cooled. The closed thermostat redirects coolant flow to the bypass pipe where ...
How does a car's cooling system work?
Engine coolant flow is provided by the water pump while engine temperature is regulated by the thermostat, fan clutch or electronic fan control, and the radiator. Coolant bypass pipes connect these parts, so they can work as a single system and the engine and heater can work properly.
MasterPro Heater Hose
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MasterPro Coolant Hose
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MasterPro Coolant Hose
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MasterPro Coolant Hose
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MasterPro Coolant Hose
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MasterPro Coolant Hose
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MasterPro Coolant Hose
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How to remove bypass hose clamps?
Use a screwdriver to loosen the bypass hose clamps and remove the hose. In some cases, the bypass plumbing uses a pipe instead of a rubber hose. These pipes, or hoses, are located near the thermostat housing. Follow the upper radiator hose to the entry port on the engine. Usually the thermostat is located inside the engine, ...
How to drain coolant from a car?
Step 1. Jack up the front of the car and lower it onto jack stands below the two front tires. Place a drain pan under the radiator drain valve. Loosen the valve and partially drain the radiator so the coolant level reaches just below the bypass hose.
How to keep coolant from rusting?
These normally rust and routine replacement is vital to maintain the integrity of the cooling system. Tighten the radiator drain valve. Lower the car from the jack stands and refill the radiator with coolant. Start the vehicle. Allow it to reach operating temperature and check for coolant leaks. Shut off the engine and allow it to cool.
Where is the thermostat located on a car?
Usually the thermostat is located inside the engine, in a housing where the upper hose is attached. The bypass hose is below the housing. The bypass hose is always much smaller than the radiator hose.
71Demon340 Banned
I was looking at my intake manifold and water pump and I am trying to figure out the purpose of the bypass. Seems worthless to me. What does it actually bypass being that it is below the thermostat. I see that the "race" water pumps don't have the outlet that goes to the bypass. Looks like you could block of the bypass and still be fine.
RedFish FABO Gold Member FABO Gold Member
It allows the water to bypass the thermostat when it is closed. Without a bypass you could have a super size air pocket traped in the engine when filling the coolant system. Also relieves back pressure on the pump when the thermostat is closed.
71Demon340 Banned
It allows the water to bypass the thermostat when it is closed. Without a bypass you could have a super size air pocket traped in the engine when filling the coolant system. Also relieves back pressure on the pump when the thermostat is closed.
