Q: Heater doesn't work correctly

asked by on

I have a heater malfunction in my car. The vents are not blowing warm air. The car hasn't been overheating. I had the coolant checked and it is at an appropriate level. What should I do?

The most likely cause of an inoperative heater (aside from low coolant) is a faulty thermostat. Hot engine coolant flows through the heater core. The blower motor blows air over the heater core and into the passenger compartment to warm the vehicle. If the thermostat is stuck open, the engine will never reach operating temperature and the coolant will not get hot enough to warm the interior of the vehicle. If the thermostat is OK, the next place to look is the heater core itself. I suggest you take your vehicle to a trained professional to have your heating issue diagnosed and repaired. The team at YourMechanic is an excellent option since we make house calls.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Heater doesn't work correctly

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: Can I add radiator fan?

The engine compartment of a 2011 Dodge Grand Caravan is not as big as older vans used to be. As a result, fitting an auxiliary fan to your radiator in an effort to make it run cooler might be difficult....

Q: When i have my car running with my heat or ac on my car hesitates like it wants to stop when i'm stopped at a light.

As you may know, your car's AC system when working properly puts an extra load on the engine at all times when it is running. When this happens, your car's computer makes adjustments to compensate for this extra load on...

Q: A/C stuck on floor and defrost will not change on any settings

Hello. You need to see if the mode door actuator is working. This actuator is on the evaporator case on the driver's side above the gas pedal. You have to remove the knee bolster for access. If this is the...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.