Q: Jerking reaction

asked by on February 15, 2017

my car is jerking a lot when i put break. its taking off really slow.

My car has 55000 miles.
My car has an automatic transmission.

Hello, There are a few things that can cause the car to jerk like this. One of these is a dirty or faulty mass air flow sensor. The mass air flow sensor monitors air intake as it is mixed with fuel prior to being injected into the motor. This sensor relays information to the ECM which uses this to make adjustments to fuel supply to the motor. A dirty or faulty sensor can cause an imbalanced air/fuel load to be supplied to the motor which results in an over fueling or under fueling situation depending on the conditions. This type of inconsistent fuel supply to the motor may cause a hesitation, loss of power, a jerking reaction, potentially a bit of black exhaust smoke and typically a strong smell of fuel when this sensor is malfunctioning. I would suggest having a professional from Your Mechanic come to your home to diagnose and inspect your vehicle.

Was this answer helpful?
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

How do the power seat controls on the driver’s seat work?

Your Accord features a number of different seat controls that will help you find the perfect (and safest) seating position behind the steering wheel. These include: Forward and Back: Slide the largest bar forward or backward to move the...

What do the controls do on the dual automatic temperature control system?

If your car is equipped with a dual automatic temperature control system, it allows you to set a different temperature for the driver side and passenger side. Once you’ve set the temperature, the system will automatically maintain it until you...

How do you replace a fog light bulb?

If your car is equipped with fog lights (not all Civics have these), they provide you with enhanced visibility when driving in foggy or misty conditions. However, like all other bulbs on your car, they’ll eventually burn out and need...

Related articles

A Buyer’s Guide to the 2012 Jeep Grand Cherokee
Though Though the Jeep Grand Cherokee is not a new model, it got a complete redesign in 2011, and the 2012 Jeep Grand Cherokee saw even more improvements. While other SUV manufacturers have sat on their laurels, Jeep has done...
The Best Used Cars to Buy to Maximize Resale Value
A A car is not an investment. An investment, by definition, increases in value. A car is a necessary purchase, and it will never appreciate in value, with the possible exception of classics and antiques. So, as a used car...
A Buyer’s Guide to the 2012 Mini Cooper Coupe
The The 2012 Mini Cooper Coupe has a distinctive style that offers an agile and fast ride to its passengers. The goal with the Coupe is to provide buyers with an alternative to the Porsche Cayman, Audi TT Coupe, and...