Skip the auto shop - Our mechanics make house calls

Q: Heat in car is not hot

asked by on

Heat in car not hot Car temp only reaches 45 C So never fully warms up Do u think thermostat is stuck open

My car has 62000 miles.
My car has an automatic transmission.

This may suggest the thermostat might be stuck open or you may have a clogged heater core. As you know, if the thermostat is stuck open, the coolant circulates constantly never allowing the motor to fully warm up and therefore not generating adequate heat resulting in the heater core not doing it’s job correctly. I would suggest having a professional from YourMechanic come to your location to diagnose and inspect your vehicle.

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: Car overheating/fluctuating on temperature.

Hello, thank you for writing in. There are several other components that can cause a malfunction with the cooling system. You are in the right realm of thinking however, and there is likely a bad circulation of coolant or air...

Q: About every 2-3 weeks the car will just stall, usually when stopped or slowing down. What is wrong?

This may be related to a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at...

Q: The alarm went off several times during the night

Hello. If this is happening randomly, it usually means that the battery in the car is failing. If the voltage is getting low enough from the battery failing, then this will occur. If the battery is fine, then one of...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...