Skip the auto shop - Our mechanics make house calls

Q: Car hesitates when accelerating.

asked by on

today wife was driving the car and said when she accelerates the car jerks. But then when at a steady speed it is fine.

My car has 186000 miles.
My car has an automatic transmission.

A: This is a common symptom of a failing mass ...

This is a common symptom of a failing mass air flow sensor. This is a unit that monitors the air and fuel mixture prior to being injected into the motor. When this is not working properly, this causes an imbalance in the air/fuel ratio which will cause the car to hesitate as you describe.

If you’d like to get this fixed, I would recommend having an expert from Your Mechanic come to your home to diagnose the hesitation while acceleration and help you fix it accordingly.

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: No check engine light

Considering your symptoms, I would suspect that your issue lies within the fuel or ignition system. Without diagnostic equipment, it would be best to have your vehicle inspected by a technician who does. Although you have no Check Engine Light,...

Q: Temperature gauge rises when stopped

It sounds like there may be a problem with your cooling fan, particularly the fan clutch. The fan clutch has a mechanism, that based on the temperature of the engine, will either let the fan spin faster or slower. When...

Q: Water leaking in mid-section of car

Hi, thanks for writing in. Typically when coolant is leaking in the center of vehicle, it comes from the water pump or the primary coolant line attached from the pump to the block. In order to verify this you can...

Related articles

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...
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...
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...