Should both of my heater core hoses be hot?
Cabin heat comes from hot coolant, so drive long enough to warm up the engine. If coolant temperature is acceptable, feel both heater hoses, which should be hot.
Can a clogged heater core cause no heat?
The most obvious sign of a clogged or broken heater core is that the heat simply doesn’t work when you turn it on. The blower fan will still function as normal but even long past the time when you know heat should be blowing out the air is warm or even cool.
What temp 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).
Will vinegar clean a heater core?
Vinegar is an acid, but is mild acetic acid and typically 5% such. It’s perfectly okay to use it alone to remove system rust if you just add a gallon to the system and run the car a short while, like 10-20 mins, including turning on the heat to clean the heater core.
What happens if your heater core is clogged?
If you have a bad heater core, you should bring your car in for repairs right away. Driving with a faulty heater core can be risky, as it can lead to overheating and extensive engine damage. Even a clogged heater core can prevent proper coolant circulation, causing your engine to run hot.
What does it mean when return heater hose is hot?
No heat, both heater hoses… 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.
Why is only one hose goes to the heater core?
It also helps to turn the heater on high without the fan and also to raise the front end of the vehicle to help with moving the coolant through the engine. Repeatedly squeezing the rad hose also helps to push out air. Hope this helps Was this answer helpful?
Why is the outlet Hot when flushing the heater core?
The OP states he has good flow when trying to flush the core yet when the truck is operating the inlet hose is hot and the outlet is cool. That certainly points to a restricted heater core. If the heater core was plugged but the coolant was able to circulate around it without exchanging any heat then the outlet hose would still be hot.
What are the symptoms of a plugged heater core?
If you do, the problem is with either the blend door actuator or the HVAC control module. asemaster November 11, 2017, 9:23pm #8 You have all the symptoms of a plugged heater core. Inlet and outlet temps of the heater hoses should be very close.
It also helps to turn the heater on high without the fan and also to raise the front end of the vehicle to help with moving the coolant through the engine. Repeatedly squeezing the rad hose also helps to push out air. Hope this helps Was this answer helpful?
No heat, both heater hoses… 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.
The OP states he has good flow when trying to flush the core yet when the truck is operating the inlet hose is hot and the outlet is cool. That certainly points to a restricted heater core. If the heater core was plugged but the coolant was able to circulate around it without exchanging any heat then the outlet hose would still be hot.
What should I do if my water heater core bursts?
Depending on your water pressure, some hoses can run up to 100 lbs. per square inch of water pressure–which can easily burst a heater core seam. Add a little more pressure until it blows the gunk out of the heater core. This is messy, so don’t be wearing your Sunday best. Replace the hoses to the heater core and tighten the clamps.