Skip the auto shop - Our mechanics make house calls

Q: Heater is not warm enough

asked by on

The temperature gauge is working like before, standing on 90 normally but not warm enough from heater, even on high

My car has 151000 miles.
My car has a manual transmission.

Hi, thanks for writing in. The temperature of your heater is going to depend on the circulation of the coolant, temperature of the engine, and the associated parts working correctly. The blend door actuators, level of coolant in the system, heater control valves, and driver controls must all be working correctly. You will want to start by inspecting the thermostat and make sure it is working correctly. If it is allowing too much coolant into the system, the heat from the engine used to heat the air for your heater will be decreased. Some sensors will trip a diagnostic troubleshooting code that can be seen when doing a scan. You may want to start there. Further testing of the system is needed. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect this heater issue for you, and make or suggest any repairs as needed.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Tire Pressure

Your car has sensors at each of the four wheels that monitor the tire pressure at each tire. When these sensors fail, you may notice inaccurate readings as to your tire pressure. In some cases such as yours, you may...

Q: where do i find the ac control module and what it looks like.

Hello. If the car needs the HVAC control module that is the control panel itself. It contains the entire computer unit as one unit. I usually test the power supply to the module first and the ground. It is common...

Q: frozen interior windshield and no heat? Heater Core problem maybe? 2003 Ford Taurus

Hello - the lack of heater function could have 5 causes: the engine is not getting up to correct temperature (center of the gauge) due to a malfunctioning thermostat, the heater control valve is not letting hot coolant into 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...
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.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.