Skip the auto shop - Our mechanics make house calls

Q: When I turn on the AC, the malfunction light comes on and the car doesn't accelerate well and starts jerking.

asked by on

When I switch on the Air Conditioning after a while the engine malfunction light comes on and the car doesn't accelerate properly.sometimes even jerking...when I switch off the AC the car works fine but malfunction light is still illuminated.

My car has 10800 miles.
My car has an automatic transmission.

A: The trouble code stored in the vehicles com...

The trouble code stored in the vehicles computer may shed some light on what’s going on. Turning on the AC adds an extra load to the engine and the computer picked up some trouble when the data figures changed. Consider hiring an experienced technician with a professional scan tool like one from YourMechanic who can come out, read the check engine light codes and observe the vehicle data to offer a more personal diagnosis.

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!

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: I just got the car two days ago and the engine light is on

Hey there, thanks for writing in about your 2010 Cadillac CTS. The light coming on may mean that they just cleared the code and light before selling you the car, or your light is on from a loose gas cap....

Q: Why is my 2010 kia forte sound like it is grinding when I'm driving but when I push the gas harder it stops?

Hi there. If your vehicle is emitting a noise when driving but when you apply more acceleration the noise goes away, then there could be an issue with the engine's lubrication system. Check the engine oil level and make sure...

Q: Hi. i have a 2000 kia sportage 4WD and it looks like the fuel pump needs to be replaced. Is it necessary to drop the fuel tank in order to replace the fuel pump?

Hi there. The fuel pump could be changed by using a special tool behind the seats in your vehicle. You will have to remove the carpet behind the rear seats and you will have access to the fuel pump. I...

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...
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...
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...