Skip the auto shop - Our mechanics make house calls

Q: Heater broken

asked by on

The heater is not working. Do I need a new heater core?

A: Hi. When a heater core fails, it usually fa...

Hi. When a heater core fails, it usually fails by leaking coolant into the passenger compartment in the vehicle. If your problem is that hot air is not being blown out of your vents, you could have several other issues. The heater is ran by the coolant in the engine. If the vehicle is low on coolant, it will not work correctly. If the system has been serviced recently, an air pocket can develop and not allow the coolant to flow to the heater core. Some vehicles have heater control valves that block off coolant to the heater core when the heater is not in use. If this valve fails, it will not allow the coolant to flow to the heater core. Lastly, the actuator under your dash can fail and not direct the air to the proper location for heating. A qualified mechanic, such as one from YourMechanic, will be able to inspect the heating issue and help you repair it.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: The transmission is stuck on either 4x4 or on one gear.

Hello there, a few different faults can cause the vehicle to remain stuck in gear. Most commonly seen is a low transmission fluid level, shift solenoid, valve body, or a transmission range sensor fault. A vehicle that can not shift...

Q: the bolt size at the top fixed chain guide 2.2 ecotec

Hello. The timing chain guide bolts on this engine are an M6 x 1.00 30mm. You will need to remove the rest of the broken bolt from the engine prior to replacing these. The replacements are available over the internet...

Q: I cleaned the ECM/PCM and now my car won't stay on

Whenever the ECM is disconnected the idle control settings the ECM has stored in memory will be cleared. The ECM will revert to the factory-new settings and since the engine now has high mileage and the need for adjustments to...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...