Skip the auto shop - Our mechanics make house calls

Q: A/C not blowing through dash vents

asked by on

I had my battery changed about two weeks ago and ever since then the a/c won't blow from the dash vents. I've tried recalibration by disconnecting the battery and pulling the HVAC fuses, letting it sit then hooking everything back up. When I turned the car on it went trough it's cycle and for about 15 seconds the air came through the dash, but then it stopped. I was a little disappointed, I thought I was on to something. Could my issue be the actuator?

My car has 146000 miles.
My car has an automatic transmission.

A: The most common cause in this case is the m...

The most common cause in this case is the mode selection actuator. I am going to assume the AC does blow from the other vents, as this is the normal indicator for the failing mode selection actuator.

The HVAC uses actuator for many things such as selecting hot or cold and what vents the air blows from. Though it seems unlikely the battery replacement and the actuator fault is most probably happenstance. A qualified Technician such as one from YourMechanic will be able to diagnose your AC system fault and perform any repairs required.

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

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: Can I put a natural gas motor into a normal truck?

Hi there. CNG powered engines would require multiple system upgrades and changes ranging from the fuel cell, fuel line plumbing and electrical system upgrades. It would probably be more work that beneficial to attempt this type of swap.

Q: Oil leaking from top left side of engine, could that be the vavle cover gasket?

Oil leaks at the top of engine could be at valve covers, intake manifolds, head gaskets, cam seals, PCV valve grommets and tubing and related components. The best thing to do, to get the source of the leak identified, is...

Q: My car will start but won't accelerate when I push the gas pedal. What would cause this problem?

I would first check to see if your Check Engine Light is illuminated. If so, there are likely trouble codes that have been stored in your vehicle's PCM that may indicate what the problem is. In order to pull these...

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...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...