Skip the auto shop - Our mechanics make house calls

Q: Heater blows cold air

asked by on

No heater blows out cold air

My car has 138224 miles.
My car has an automatic transmission.

A: Hi, thanks for writing in. If your heater i...

Hi, thanks for writing in. If your heater is not blowing warm air, the first thing I would recommend checking your coolant level. The engine coolant heats up as the engine heats up. When this happens and the heat is turned on, the hot coolant will pass through the heater core. Next, the blower motor blows air past the heater core to create heat. It is likely that the cooling system has a leak. For this I would recommend having a cooling system pressure test performed by a qualified professional to determine the leak source. I would recommend having an expert from YourMechanic come to your home or office to confirm a diagnosis on the issue and make or suggest the necessary repairs or replacements.

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・Save up to 30%

Get a quote

What others are asking

Q: Air conditioner blows colder at idle and heater blows slightly warm.

Hi there. A blend door could be stuck and causing the outside air to enter the cabin compartment. Check the blend doors to see if they are sealing shut. If they are not sealing shut, then check the actuator and...

Q: Car is not starting after attempts to repair - 1999 Cadillac Catera

Hello. Before replacing any more parts I would recommend having the vehicle tested by a mechanic. Your problem is very repeatable and should be easy to isolate to an ignition or fuel-related cause for the stalling. Changing the ECM (also...

Q: Fuel pump

The two vehicles have different fuel tanks and different pumps. Unfortunately, this swap will not work. If you need help with a replacement fuel pump on your Mercury, a local expert from YourMechanic will be able to source the correct...

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...
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.