Skip the auto shop - Our mechanics make house calls

Q: Ac slows down when accelerating

asked by on

slow engine speed or when not pressing throttle, ac runs on high nice and cold. when gentle acceleration, ac slows down, used to only do this when hard acceleration but now happens all the time.

My car has 85000 miles.
My car has an automatic transmission.

A: If you are finding that the A/C blower is n...

If you are finding that the A/C blower is not blowing as good when accelerating then you may have a weak battery and alternator. You may also have a blower motor that is going bad.

First have the battery load tested to make sure it can take a load. Then have the charging system checked to make sure it charges at the specified rate. Also, check the blower motor for excessive amperage draw and repair or replace it as needed.

If you need some assistance with these checks, consider YourMechanic, as one of our mobile technicians can come to your home to diagnose the issue with your A/C for an accurate repair.

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・Save up to 30%

Get a quote

What others are asking

Q: How do I turn off a remote vehicle start?

If you want to turn off the vehicle after a remote vehicle start, follow these instructions: 1. Press the remote vehicle start button on the remote keyless entry (RKE) transmitter. Hold the button until the parking lamps turn off. 2....

Q: Tapping noise at high rpm only.

Hello, thanks for writing in about your Ford E-150. The noise may be the engine is pinging from pre-ignition. This can be due to ignition timing that is too far advanced. Another possibility is that the EGR valve is not...

Q: Air in car not cooling

If the air is blowing, but not cold, then there may be a problem with either the blend door actuator, or the air conditioning system refrigerant levels. I would recommend having a professional technician, such as one from YourMechanic, inspect...

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 Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...