Q: Q: Car blowing cold air

asked by on

I have a 99 Buick century my heat was working fine now its blowing cold air my car isn't overheating or anything what can be causing my heat to come in go now it's just blowing cold air

My car has 104053 miles.
My car has an automatic transmission.

The lack of heat being generated by your system may indicate a clogged heater core. The [heater core]((https://www.yourmechanic.com/services/heater-is-not-working-inspection) is a small radiator like unit that circulates the hot coolant from the engine through the heater core which then uses this warm coolant to heat the inside of the car with the help of the blower motor that blows the warm air through the vents inside the car. The other possibility is that the thermostat may not be allowing the engine to reach a normal operating temperature and since the engine’s warm coolant is the essential source of the heater core supplying heat to the inside of the vehicle, this can impact the warmth of the heat inside the vehicle. I would suggest having an expert from YourMechanic come to your location to diagnose your heating system.

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: Car blowing cold air

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 losing gas mileage and not much power

Hello there, thank you for asking about your 1989 Buick Reatta. Vehicles lose both mileage and power over time - especially after 27 years! The only way to combat this is by keeping up on your maintenance and repairs. A...

Q: Q: the battery won't stay charged.

I would first verify that the vehicle has a drain above 200 milliamps by disconnecting the battery's negative cable and putting an amp tester between the post and clamp. The test should be done correctly by having the tester...

Q: Is it necessary to replace the rocker arm bolts? I tightened them to torque specs but it feels stripped out.

Hi there. If the bolt is stripped out and the treads to the bolt are in the head of the engine, then remove the bolt and look at it. Most likely the threads in the head are stripped out. You...

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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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.