Why is my 2014 Impala jerking when accelerating?

If your 2014 Chevrolet Impala is jerking or hesitating when you accelerate, there could be a few potential causes. The most common issues include problems with the fuel system, transmission, or engine sensors. Let's dive into the details to help diagnose and fix the problem.

Fuel System Issues

One of the most common reasons for a jerking or hesitating Impala is a problem with the fuel system. This could be due to a clogged fuel filter, faulty fuel pump, or issues with the fuel injectors. The fuel system needs to deliver a consistent flow of fuel to the engine, and any disruptions can cause the engine to jerk or hesitate during acceleration.

• Clogged fuel filter: Over time, the fuel filter can become clogged with debris, restricting fuel flow. This can lead to inconsistent fuel delivery and engine hesitation.


• Faulty fuel pump: If the fuel pump is failing, it may not be able to provide enough fuel pressure to the engine, causing the jerking sensation.


• Faulty fuel injectors: Dirty or malfunctioning fuel injectors can cause uneven fuel distribution, leading to engine hesitation and jerking.

To diagnose and fix fuel system issues, you may need to have a mechanic inspect the fuel system components and potentially replace the fuel filter, fuel pump, or fuel injectors.

Transmission Problems

Another potential cause of a jerking Impala is a problem with the transmission. Transmission issues can cause the engine to hesitate or jerk during acceleration, especially when shifting gears.

• Worn or damaged transmission components: Over time, the gears, clutches, or other transmission parts can wear out, leading to inconsistent power delivery and jerking.


• Transmission fluid issues: Low or contaminated transmission fluid can cause the transmission to malfunction, resulting in jerking or hesitation.


• Transmission control module (TCM) problems: If the TCM, which controls the transmission, is malfunctioning, it can cause shifting issues and engine hesitation.

If you suspect a transmission problem, it's best to have a mechanic diagnose and repair the issue, as transmission repairs can be complex and expensive.

Engine Sensor Issues

Faulty engine sensors can also contribute to a jerking or hesitating Impala. These sensors provide important information to the engine control module (ECM), which uses this data to optimize engine performance. If a sensor is malfunctioning, it can cause the engine to run poorly, leading to jerking or hesitation during acceleration.

• Oxygen sensors: Faulty oxygen sensors can provide inaccurate information about the air-fuel mixture, causing the engine to run unevenly.


• Throttle position sensor: A malfunctioning throttle position sensor can cause the engine to respond inconsistently to throttle inputs, leading to jerking.


• Crankshaft position sensor: Issues with the crankshaft position sensor can disrupt the engine's timing, resulting in hesitation or jerking.

If you suspect an engine sensor issue, it's best to have a mechanic diagnose and replace the faulty sensor to restore smooth engine operation.

In summary, the most common causes of a jerking or hesitating 2014 Chevrolet Impala during acceleration are fuel system problems, transmission issues, and faulty engine sensors. By identifying and addressing the root cause, you can restore your Impala's smooth and responsive acceleration.

Is car jerking a transmission problem?

Yes, a jerking car is a common sign of a transmission problem, although it can also be caused by other issues like engine or fuel system problems. Common transmission-related causes include low or dirty transmission fluid, worn-out internal components, and faulty sensors. 
This video explains the causes and fixes for a car that jerks when accelerating: 55sHVAC Mechanic YouTube · Aug 25, 2023
Common transmission-related causes

• Low or dirty transmission fluid: This is one of the most frequent culprits, as the fluid is crucial for lubrication and smooth gear changes. When low or contaminated, it can lead to harsh or jerky shifts. 
• Worn transmission components: Over time, parts like clutches, bands, and solenoids can wear out, leading to uneven shifts and jerky movement. 
• Faulty sensors: Modern cars use sensors to manage gear shifts. A bad throttle position sensor or speed sensor, for example, can send incorrect signals and cause erratic shifting. 
• Problems with the torque converter: This component connects the engine to the transmission. A failing torque converter can cause jerky acceleration and may trigger a check engine light. 

Other potential causes

• Engine problems: Misfires, clogged fuel injectors, or a dirty air filter can affect performance and make gear changes feel rough. 
• Brake issues: A sticking brake caliper can create resistance, leading to a jerky feeling, especially when accelerating from a stop. 
• Software glitches: In modern cars, software issues with the transmission control unit can sometimes cause jerking. 

What to do

• Check the transmission fluid: If you can access it, check the fluid level and condition. If it's low, dark, or smells burnt, it's a strong indicator of a problem. Note that checking the fluid on many modern cars is not possible without a mechanic. 
• Seek professional help: Because a jerking car can indicate serious issues, it's best to have the vehicle inspected by a professional to get an accurate diagnosis and prevent further damage. 

You can watch this video to learn how to fix a jerky transmission: 44sAMSOIL INC.YouTube · Dec 4, 2019

Why does my 2014 Chevy Impala jerk when accelerating?

With your Impala, the issue could be related to the electronic throttle control system since it uses an electronic gas pedal. Sometimes, a dirty or faulty throttle body, a malfunctioning throttle position sensor (TPS), or an accelerator pedal position sensor issue can cause this kind of jerking.

Why does my Impala stutter when accelerating?

An engine that is hesitating to accelerate is most likely dealing with a fuel/air mixture that is too lean. Engine's that are running inefficiently will begin to show signs like hesitation which will only become worse over time.

What does it mean when my car jerks when I press the gas?

A car jerks when accelerating due to problems with the fuel system, ignition system, or air intake. Common culprits include worn-out spark plugs, dirty fuel injectors or fuel filters, and a clogged air filter, but the issue could also point to a faulty mass air flow sensor, a clogged catalytic converter, or transmission problems. 
Fuel system issues

• Dirty or clogged fuel injectors: Injectors may not spray fuel evenly, leading to a lean or rich fuel mixture that causes jerking. 
• Clogged fuel filter: This restricts fuel flow to the engine, causing a stutter when you demand more power. 
• Weak fuel pump: A failing fuel pump may not be able to deliver adequate fuel pressure. 

Ignition system problems 

• Worn-out spark plugs: Misfires are a common symptom of bad spark plugs, leading to a lurching sensation. 
• Bad spark plug wires or ignition coils: These are essential for the spark plugs to fire correctly, and a malfunction can cause misfires. 

Air intake issues

• Dirty air filter: A clogged filter starves the engine of air, disrupting the air-fuel ratio. 
• Faulty mass air flow (MAF) sensor: This sensor measures the amount of air entering the engine; if it's faulty, it sends incorrect information, leading to poor performance. 

Other common causes

• Clogged catalytic converter: A blockage in the exhaust system can create back pressure, preventing the engine from accelerating properly. 
• Transmission problems: Issues like low or dirty transmission fluid, or a failing transmission, can cause jerky shifts and acceleration. 
• Damaged acceleration cables or sensors: A broken or malfunctioning acceleration cable can cause jerky and inconsistent acceleration.