Skip the auto shop - Our mechanics make house calls

Q: No air coming through any of the vents, defrost, etc.

asked by on

When starting the car this morning, a loud "flapping" noise came from under the hood, sounding like closer to the dash. After "flapping", a squealing sound was heard...............the AC was still working. I turned off the AC unit and the sound stopped. Turned the AC unit back on and the "flapping" sound occurred, then stopped. When the sound stopped, no air was blowing out of the vents. Air will not come out of the vents, defrost or floor settings.......whether on AC, Heat or Air. Thank you.

My car has 125800 miles.
My car has an automatic transmission.

It sounds like you may have got something stuck in the blower for the A/C. The blower may be blocked or may have burned up. Have the blower removed and tested and checked for a problem. You may have something caught in the motor causing it to lock up. I have seen paper, pens, and even rodents. I know it sounds weird but it happens. It can also just be a blower resistor and blower motor. To have the fault pinpointed in person, a certified mechanic from YourMechanic can take a look at your car to diagnose your AC issue and squealing sound that you are hearing.

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!
  1. Home
  2. Questions
  3. No air coming through any of the vents, defrost, etc.

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: Engine shakes at idle, burning smell, only in cold temperatures

Hi there. The vibration could be the engine mounts loose on your engine or transmission. The engine knocking noise could be the engine pinging as there is not enough fuel to burn and the cylinders are colder than normal. This...

Q: Do I need to have the oil pan replaced as well for a leaky gasket? We took my 08' Tahoe Hybrid to the dealer and they said I have

Hello...the only reason that you would need a new oil pan is if the pan is corroded or physically damaged (tears, cracks, big dents, perforations). If the oil drain plug threads are damaged, that is repairable and the pan is...

Q: Turned car off and wasn't firing the plugs when I went to start back 1989 Pontiac Grand Am

Hello - this sudden failure is likely the crankshaft position sensor having failed. It provides a timing trigger for both ignition and the fuel injection system. Check first for blown fuses (ignition and fuel injection), then for problem codes, whether...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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.