Skip the auto shop - Our mechanics make house calls

Q: Ac not blowing out of vents turns on but doesn't come out

asked by on

I don't hear anything when I turn it on or smell anything . I can hear it click on when I press the power button but nothing comes out no matter the temperature or level the ac or heater is on. Unless I get on the hwy if I turn it on it'll blow very cold air for about 45 sec and stop. Ive tried doing that repeatedly and it does the same thing over and over blows very cold and turns off . Any other time I can have the ac on and nothing blows out of the vents at all
My car has an automatic transmission.

Hi! It is sounding like you may have a bad blower motor control module. It is located under the dash next to the blower motor. A technician can test it with a volt meter to verify its proper operation. I’d also suggest inspecting/replacing the cabin air filter while you’re down there, as it can restrict air flow out of the vents.

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. Ac not blowing out of vents turns on but doesn't come out

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: Air conditioner condensation does not drain

Hello. We will be happy to assist. Most likely you have an AC drain port that is clogged. It's best to blow out the drain port with compressed air to ensure there is a clear drain passage. If there is...

Q: Vent blowing issues

Hi there. This is a common occurrence on this vehicle after a loss of battery power. In some cases, you have to do the power reset several times for the programming to relearn itself. I would remove the same fuse...

Q: Security system malfunctioning

Your security system is likely controlled by a control module or computer of some kind. Considering that you say the alarm has a mind of its own, this may be a computer issue and will likely require scan tools for...

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 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...
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...