To properly warm the interior of your vehicle, then both heater hoses should be hot. If one is noticeably hotter than the other, then there could be a clog in the hose. In addition, if the heater hoses are cold, this is also a sign of clogged hoses.
No, both radiator pipes are not supposed to be of the same temperature. One of them (the lower one) acts as an inlet to the engine and the other is an outlet. If the lower one is already hot, then the heat transfer from the engine won’t be as effective and may cause your engine to overheat. Which radiator hose should be hotter?
The lower radiator hose needs to be at a lower temperature, but it’ll not be completely cold. If it is, you are probably dealing with a clogged thermostat, insufficient coolant levels, a bad water pump, or a clogged cooling system. Read on to find what’s normal and when you should worry. Also Read: How Long Does It Take to Replace a Radiator?
Hoses – Rubber hoses or silicone used to carry coolant from rad to engine and engine to heater core. Coolant is as you know designed to cool your engine, it moves around the system in a circuit.
What if 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.
Should top and bottom radiator hoses be hot?
The engine needs to be really hot and almost overheat before the thermostat lets the coolant pass by. If your car is not overheating, but the lower coolant hose is cold when you feel it – it may just mean that it is not hot enough, and therefore there is nothing wrong with your engine.
What are the signs of a clogged heater core?
Key signs to look out for: Weak or no airflow. Cold air (not warm) coming through the vents when the heater is on. Coolant leakage visible inside the cabin or a damp smell.
Which radiator hose should be hot?
One way to check for proper coolant circulation is to check the upper and lower radiator hoses. The upper radiator hose should be hot, around 190–200 °F. (The safest and most accurate way to get this temperature reading is with an infrared thermometer.)
Should both heater core hoses be hot?
To properly warm the interior of your vehicle, then both heater hoses should be hot. If one is noticeably hotter than the other, then there could be a clog in the hose. In addition, if the heater hoses are cold, this is also a sign of clogged hoses.
How can I tell if my heater core is clogged?
u200bStart the engine of your car and allow it to warm up for a while. u200bOnce it reaches the operating temperature, the heater valve automatically allows the coolant to flow through the heater core. This action pushes the air bubble outside. u200bLeave the car idle in this state for 15-30 minutes.
How do you burp a heater core?
Clogged Heater Core If the heater core becomes clogged up, coolant cannot flow around the heating matrix, radiator and engine, and can therefore not be used to heat the cabin. If you suspect the heater core to be clogged, a flush of the system will be necessary to restore it to working order.
How hot should heater core hoses be?
Check the temperature of the heater inlet and outlet hoses by feel. (The air temperature around the hoses must be at least 85°F (24 °C).
Should both heater core hoses be the same temperature?
Set the temperature in the vehicle at hot, with the fan off. When the vehicle is at operating temperature feel the two hoses, the should be the same temperature. If one hose is noticeably hotter then the other then the heater core may be partially plugged or restricted.
How do I know if my heater core is inlet or outlet?
Most experts agree that your engine should run between 195 degrees and 220 degrees. In ideal situations, your needle will maintain a posture right in the middle of your gauge. Keep in mind that this can go up or down depending on the conditions in the vehicle itself (such as running the air conditioner or heater).
Are both heater core hoses supposed to be hot?
To properly warm the interior of your vehicle, then both heater hoses should be hot. If one is noticeably hotter than the other, then there could be a clog in the hose. In addition, if the heater hoses are cold, this is also a sign of clogged hoses.
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.
More Answers On Should Both Heater Hoses Be Hot
Should Both Heater Hoses Be Hot? – QuestionAnswer.io
Jun 30, 2022If 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.
Top Radiator Hose Supposed To Be Hot? (Beginners guide)
Start the car from cold, run the engine for 10 minutes or so, and check that one hose is warm and the other cold. That indicates the stat is closed as it should be, so far so good. Now drive the vehicle until normal operating temperature is reached. Shut off the engine and check both hoses, they should now both be warm.
No heat, both hoses to heater core are cold | EricTheCarGuy
With the engine cold and you’ve got reasonable access to safely disconnect your heater core hoses one at a time, disconnect one or the other and have a friend start the engine. I’d personally try to find the heater core return hose and disconnect it at the engine. Start the engine and look for coolant flow. Have the friend shut down the …
Why Is Water Heater Supply Line Hot? – Building Advisor
Feb 18, 2022A: It is normal for the incoming cold water pipe to get a little warm due to convection – that is, hot water rising in the tank. Also copper piping is a good conductor of heat. Many modern water heaters have built-in heat traps to limit the migration of hot water. However, hot water five feet back on the supply line is not normal.
What should the heater core inlet hose temperature be? – Fixya
One hose into the heater should be hotter than the other because heat is transferred in the heater in the car. . … be 190 degrees,Now lift the hood and locate the two heater hoses going into the heater assembly at the fire wall,Both hoses should be hot to hold on to,if both are hot and no heat inside your problem will be the blend air door in …
Why is My Top Radiator Hose Hot and Bottom Cold? – When It Runs …
No, it is not a norm for both radiator hoses to be hot at the same time. … Replace the actuator and check the heater output if the actuator is not moving. Should radiator hoses be hard when hot? A good radiator hose should feel firm but not hard, regardless of the temperature. A damaged radiator hose is rigid, spongy, or soft to the touch.
When Should You Replace Your Car’s Heater Hose?
Recommendations for changing the hose vary from every four to six years to every five to ten years. On average, routine replacement happens around 50,000 to 100,000 miles. Another contributing factor is excessive outside temperatures. In fact, engine cooling systems tend to experience the most issues in extremely hot weather.
Top Radiator Hose is Hot and Bottom One Cold: Is It Normal?
Jun 11, 2022As stated before, a hot top radiator hose and a relatively cold lower hose indicates normal operations of the radiator. The coolant enters the engine for heat transfer through the lower hose as your thermostat switch opens up. However, you must remember that the lower hose shouldn’t remain completely cold. Normally, a functional cooling …
Heater Cores: Problem Diagnosis, Inspection, Pressure, and Dye Testing
The hose should also be pressurized. If the hose is not hot enough, replace the thermostat. If the hose is not pressurized, test or replace the radiator pressure cap if it will not hold the specified pressure. If okay, see step 2. STEP 2. With the engine running, feel both heater hoses. (The heater should be set to the maximum heat position …
My radiator hose is soft like I can squeeze it. I was che…
You can check this by feeling the two heater hoses entering and exiting the heater core. They should both be warm or hot. The one that enters will be hotter than the one that exits. What’s important is one that is not cold. If you determine the heater core is plugged, there are methods to attempt and unplug it. I would do that two or three …
SOLVED: No heat in 03 1500 both heater hoses are hot – Fixya
No heat in 03 1500 both heater hoses are hot – 2003 Chevrolet Silverado 1500. Posted by Anonymous on Feb 27, 2010. Want Answer 0. Clicking this will make more experts see the question and we will remind you when it gets answered. Comment; Flag; More. Print this page; Share this page …
(Solved) – Technician A says that one heater hose should be hot and the …
Both hoses should …
Why is My Lower Radiator Hose Cold But Upper Hose is Hot … – Spire Car
Oct 12, 2021Why is the Lower Hose Larger than the Upper Hose? Reasons for a Cold Lower Radiator Hose. #1 – Inoperative Thermostat. #2 – Failed Water Pump. #3 – Loose or Slipping Water Pump Belt. #4 – Clogged Radiator. #5 – Collapsed or Clogged Hose (s) #6 – Excess Air in the Cooling System. #7 – Low Coolant Level.
Can a heater core be partially clogged? – Ufoscience.org
Should both heater core hoses be hot? To properly warm the interior of your vehicle, then both heater hoses should be hot. If one is noticeably hotter than the other, then there could be a clog in the hose. In addition, if the heater hoses are cold, this is also a sign of clogged hoses.
Turn Up Your Heater – Popular Mechanics
Turn the heater control to Hot, select the floor mode and set the blower to medium/high speed. Make sure there’s strong airflow from the floor registers. Check the temperature with a thermometer …
No heat, both heater hoses are hot but no heat inside vehicle
Answer. If the return heater hose is hot normally that means coolant is flowing through the heater core and is not transferring heat to the air from the blower motor. It is best to use a laser temperature gun and know the exact temperature of the heater core inlet and outlet temperatures. If the outlet hose is close to the same temperature as …
supply line and hot line from water heater both hot – Plumbing …
Rick_Montgomery (Rick Montgomery) April 22, 2012, 9:04pm #7. We just had a cold spell today, so I thought I would check my water heater surface temp and noticed that I get about the same temp (6 degrees difference) on both the supply and outlet lines. Going only 12″ up I see a difference of 15 degrees and the gap only includes the farther I go …
(Solved) – Technician A says that one heater hose should be hot and the …
Both hoses should be hot to the touch. Explanation : Because a heater hose is a relatively inexpensive rubber hose which is used to transfer the excess heat, in the form of engine coolant, from the engine into the heater core. Once the heated engine coolant reaches the heater core, it travels through small tubes inside the heater core.
Why Is Water Heater Supply Line Hot? – Building Advisor
A: It is normal for the incoming cold water pipe to get a little warm due to convection – that is, hot water rising in the tank. Also copper piping is a good conductor of heat. Many modern water heaters have built-in heat traps to limit the migration of hot water. However, hot water five feet back on the supply line is not normal.
Why is My Top Radiator Hose Hot and Bottom Cold? – When It Runs …
No, it is not a norm for both radiator hoses to be hot at the same time. … Replace the actuator and check the heater output if the actuator is not moving. Should radiator hoses be hard when hot? A good radiator hose should feel firm but not hard, regardless of the temperature. A damaged radiator hose is rigid, spongy, or soft to the touch.
When Should You Replace Your Car’s Heater Hose?
Recommendations for changing the hose vary from every four to six years to every five to ten years. On average, routine replacement happens around 50,000 to 100,000 miles. Another contributing factor is excessive outside temperatures. In fact, engine cooling systems tend to experience the most issues in extremely hot weather.
My radiator hose is soft like I can squeeze it. I was che…
You can check this by feeling the two heater hoses entering and exiting the heater core. They should both be warm or hot. The one that enters will be hotter than the one that exits. What’s important is one that is not cold. If you determine the heater core is plugged, there are methods to attempt and unplug it. I would do that two or three …
Not your usual heat issue – Jeep Wrangler Forum
Both hoses going to the heater core are super hot. I only get hot air if I turn the system to recirculate. Dash gauge is reading 210 degrees as it should. Yes we have burped the system by jacking up the passenger side so the radiator was the highest point. We ran the Jeep for a half an hour and squeezed the hoses until no more air bubbles came out.
AUTT Ch 64 Heating and Air-Conditioning System Diagnosis – Quizlet
Technician A says that one heater hose should be hot and the other hose cool if the heater is functioning okay. Technician B says that both hoses should be hot to the touch. Which technician is correct? A) Technician A only B) Technician B only C) Both technicians D) Neither technician.
Coolant not circulating!? | GM Truck Club Forum
the heater core hoses should both be hot. if warm then the heater core needs to be blown out / reversed flushed. after that run engine with pressure cap off so as to remove air bubbles. with a new engine this air bubble effect can cause the heater core not to flow properly. since the temp is correct on the gauge I would suspect the heater core …
Heater Hoses Not Hot No Heat for Heater? – 2CarPros
Hi autuumsky, The abnormal noise from the fan motor could be due to foreign matter stuck in the blower housing or a bad fan motor. Low heat can be due to coolant fault. Check if both heater hoses to heater core are hot. If only 1 is hot, either the heater core or the coolant passage is clogged or the heater control valve is not opening properly.
Top Radiator Hose is Hot and Bottom One Cold: Is It Normal?
As stated before, a hot top radiator hose and a relatively cold lower hose indicates normal operations of the radiator. The coolant enters the engine for heat transfer through the lower hose as your thermostat switch opens up. However, you must remember that the lower hose shouldn’t remain completely cold. Normally, a functional cooling …
Lower Radiator Hose Cold: Potential Causes that are Doing this!
4. Issues with the Heater Core. Sometimes, it is possible that the coolant is not traveling through the heater core appropriately or the air from the blower is not reaching properly. Thus, the lower radiator is not able to perform its function due to the problems in the heater core. So, ensure that the heater core is working perfectly fine.
Heater Barely Warm – Jeep Enthusiast Forums
The temps in the chart below show what you should be getting from the heater, and are measured with the engine at operating temp and idling. Output should be directed to the floor vents, heat turned to full, then fan turned up full. Hoses at the firewall should both be fairly hot, and the output just slightly cooler than the input hose.
Heater Issues In My 2001 – Dodge Cummins Diesel Forum
Now check the heater hoses they should NOT be both hot. If the heater core is operating properly there should be one 190*F hose then the return hose should be around 110*F roughly if exchanging temperature well. If not the heater core is plugged up from lack of coolant flushes.
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