Do you have an automatic or manual transmission? Sometimes jerking indicates a transmission problem. Sometimes car jerking when slowing down can be caused by being in a gear that is too high for the vehicle’s speed. The jerking of the vehicle should be stopped by pressing the clutch pedal and downshifting.

Reasons behind jerking car when slowing down

Several facts can cause your car to jerk while slowing down. The most common reasons are listed below.

  • Damaged or misaligned tire
  • Blocked fuel filter
  • Faulty or leak transmission 
  • Faulty or leak transmission
  • Mass airflow sensor fault
  • Faulty throttle body 
  • Worn clutch 
  • Worn-out motor mounts
  • Faulty Coil packs
  • Corrupt turbo 

Damaged or misaligned tire

When you are slowing down your car, it can jerk if you have the tire damaged or misaligned. It can happen with any metal, glass, or nail falling on the road. They damage the tire and cause an imbalance of tire air pressure and pull it out of alignment, which causes a jerk in your car.

Blocked fuel filter

The jerking of your car was due to blocked fuel filters. Filters usually do not let impurities enter the engine. But when it gets clogged with dirt, it loses the ability to filter dirt and debris in the fuel. Then the fuel impurities end up in your engine and cause a jerk.

Faulty or leak transmission 

When you slow down your car, the transmission shifts from one gear to another. When the transmission gets damaged, it loses its ability to switch smoothly and causes a jerk. If the transmission is leaked, you may experience a pull in your car when slowing it down. 

Mass airflow sensor fault

Mass airflow sensors help to determine the air-fuel ratio that goes into the engine and balance it. But if the sensor gets damaged or faulty, it fails to make the balance and causes the engine to be over-fueled or under fuel. Hence it causes the engine to jerk, and ultimately, the car vibrates. 

Faulty throttle body 

The throttle body is one of the most critical parts of the engine. It supplies fresh air to the engine and ensures the proper balance of the air-fuel system of the engine. When it gets damaged or faulty, it cannot provide enough air to meet engine demand, causing an air shortage. That makes the engine air-fuel imbalance and finally causes a jerk. 

Worn clutch 

It can get poorly worn if you have not changed the clutch for a long time. Usually, a clutch works properly for 150,000 miles depending on product quality. A lousy grip can also cause damage to the transmission and engine and cause jerks when running at a slow speed. It’s the most common symptom of a worn clutch. 

Worn-out motor mounts

The engine mount is essential for holding the engine in a secure place and running correctly when the car vibrates. When the mounts get worn out, it gets damaged by the car’s vibration and causes weird sounds along with lots of jerking when the car slows down.

Faulty Coil packs

A damaged coil pack is one of the main reasons the car runs improperly. And also, it causes getting shocked and jerks in the car when it runs slowly.

Corrupt turbo 

Damage to a turbo happens very rarely, but it can happen sometimes. A damaged and corrupt turbo can cause a jerk accelerating or slowing down. It also causes the engine to run abnormally. 

More to explore – How To Make Your Exhaust System Louder? (5 Simple Methods)