Car drives rough only during acceleration. grand cherokee...

Q: Car drives rough only during acceleration.

asked by on February 03, 2017

While driving, the car feels fine when i do not have my foot on the gas pedal. Once i accelerate i can feel a roughness in the car. This is felt through the pedal if that helps

My car has 117000 miles.
My car has an automatic transmission.

What you are describing sounds like 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 vital 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

Weird sound and shaking as well as lower gas mileage and poor acceleration

It sounds like you may have a clogged catalytic converter. As you may already know, the catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to be expelled into the atmosphere. When this is clogged, this...

Where is the Cam Position Sensor located in a 2006 Saturn Ion 2, 2.2L

i am working on this

code P1780

The code is for a possible problem with the transmission control switch on the shifter. The switch should be cycled during the scan test or it will set the code. If the code is still set then you will need...

Related articles

The Best Used Cars to Buy for Senior Citizens
Everyone Everyone needs a way to get around. You need to get groceries, get to doctors’ appointments, visit with family and more. However, senior citizens have very different needs when it comes to buying a used car than other demographics....
2012 Jeep Patriot vs. 2012 Honda CR-V: Which One Should I Buy?
The mid-size SUV is a great vehicle for getting a lot of people from one place to another, with a decent price point and pretty good ongoing fuel economy. While they are never going to get the amazing gas mileage...
How to Take the Doors Off Your Jeep
Jeeps Jeeps have been around since before WWII, and they’ve been modifiable since the very beginning. Because of their unique nature, Jeeps sit in a class all of their own: a coupe, a convertible, and a capable off-roader, all in...