Q: Q: Heating problem

asked by on

Climate control works,but blows cool air

My car has 136000 miles.
My car has an automatic transmission.

The first thing to confirm is whether or not the engine operating temperature is in the normal range and whether there is sufficient coolant in the radiator. If, for example, the engine cooling system thermostat is stuck open, and thus the engine doesn’t reach normal operating temperature, you will get inadequate heat delivery to the cabin. If the engine temperature is normal, and the coolant level is full, you’ll want to check the operation of the heater control valve as well as any blend door(s) and controls within the under dash HVAC ventilation network. If no faults are found to this point, suspect a plugged heater core. "No heat" is a fairly common scenario that YourMechanic technicians are called on to repair every day and consequently the most expeditious thing to do is simply request a no heat diagnostic and the responding certified Mechanic will get your problem resolved promptly.

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. Q: Heating problem

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: Need to change brake pads back and front

Changing brake pads is a good entry level job for a mechanic, but you can encounter some head scratching details from car to car. Here is an article on changing brake pads, not geared to any one type of car,...

Q: My Check Engine Light is on, and the code points to the thermostat. Is it safe to drive my car with this issue?

If you can write back in with the exact Diagnostic Trouble Code (DTC) that Autozone downloaded for you, we can give you a more precise answer. For want of that detail, if you are referring to the "engine cooling system...

Q: Thermostat gasket is leaking from last repair. Is there a warranty/ "good faith" policy considering it has been only 90 days

If you suspect that the repairs did not fix the leak then you will need to contact customer service and set up another appointment to have the leak checked and if it was caused by last repair they will take...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...