Car Jerking at Low Speeds: Causes and Solutions

“Just yesterday, I was driving my Hyundai HD120 truck from Minh Khai Street, Hai Ba Trung District, back to the warehouse in Hoai Duc District, and the truck kept jerking at low speeds. Any mechanics here know what’s wrong?” Tuan, the owner of a construction materials store on Le Duan Street, complained to his friends at the tea stall at the end of the alley. Surely, any driver has experienced at least once the uncomfortable feeling of a car, especially a heavily loaded truck, jerking at low speeds. So what are the causes and how to fix them? Let’s find out with Xetaihanoi.edu.vn!

Causes of Car Jerking at Low Speeds

Car jerking at low speeds is a common phenomenon that can stem from various causes. Here are some of the most common reasons:

1. Poor Fuel Quality

Poor quality fuel is a leading cause of car jerking at low speeds. “Dirty” fuel contains many impurities, which, when not completely burned, create carbon deposits that stick to fuel injectors, spark plugs, intake valves, etc. This hinders the fuel injection and combustion process, making the engine run unstable and causing the car to jerk.

2. Clogged Fuel Filter

The fuel filter’s function is to remove dirt and debris from the fuel before it is pumped to the engine. When the filter is clogged, the fuel supply to the engine is restricted, especially at low speeds, leaving the engine without enough fuel to operate smoothly, resulting in jerking.

3. Weak Fuel Pump

The fuel pump is responsible for drawing fuel from the tank and pushing it to the engine. Over time, the fuel pump can weaken or fail, causing insufficient fuel supply to the engine, particularly at low speeds, leading to jerking.

4. Faulty Oxygen (O2) Sensor

The oxygen sensor measures the amount of oxygen in the exhaust gases to adjust the air-fuel ratio accordingly. When the oxygen sensor is faulty, the air-fuel ratio will be incorrect, resulting in inefficient engine operation and causing the car to jerk.

5. Weak Spark Plugs

Spark plugs generate the electrical spark that ignites the fuel-air mixture in the combustion chamber. When spark plugs are worn, damaged, or have incorrect gaps, the spark will be weak or uneven, leading to incomplete combustion in the cylinder and causing the car to jerk.

6. Dirty Idle Air Control (IAC) Valve

The Idle Air Control (IAC) valve regulates the amount of air entering the engine when the car is idling or at low RPM. When the IAC valve is dirty, it cannot function properly, causing unstable airflow into the engine and resulting in jerking.

Price List for Related Repair Services

Note: This price list is for reference only. Actual prices may vary depending on the car model, brand, repair shop, and geographic location.

Important Notes When Your Car Jerks at Low Speeds

• Do not underestimate the problem: Car jerking at low speeds, although not a serious issue, can lead to more severe damage and costly repairs if not addressed promptly.
• Regular inspection: It is recommended to have your car regularly inspected at reputable garages like Thai Phong Auto for timely inspection, maintenance, and troubleshooting.
• Choose a reputable repair shop: Choose reputable garages with experienced technicians and modern equipment to ensure quality repairs.

Frequently Asked Questions

1. Is car jerking at low speeds dangerous?

While car jerking at low speeds may not pose an immediate danger, it can potentially lead to loss of control, especially in congested urban areas.

2. What should I do when my car jerks at low speeds?

When your car jerks at low speeds, you should reduce speed, pull over to a safe location, and perform a preliminary check. If you cannot fix it yourself, call for roadside assistance or take your car to a reputable garage for inspection and repair.

3. How often should I clean the fuel injectors?

It is recommended to clean the fuel injectors every 20,000 – 30,000 km or once a year to ensure efficient engine operation.

How to Purchase from XE TẢI HÀ NỘI

For consultation and purchase of XE TẢI HÀ NỘI products and services, please contact us directly through our website xetaihanoi.edu.vn or visit our showroom at [showroom address] for a hands-on product experience.

Similar Products

Besides repair services, XE TẢI HÀ NỘI also offers a wide range of trucks such as:

• Hyundai Trucks
• Isuzu Trucks
• Hino Trucks
• Thaco Trucks

Conclusion

Car jerking at low speeds is a common occurrence that can be caused by various factors. To ensure safety and prolong the lifespan of your vehicle, you should regularly inspect and maintain your car at reputable garages like XE TẢI HÀ NỘI.

Leave a comment below if you have any questions or share this article if you find it helpful. Drive safely!

Hyundai HD120 Truck

Clogged Fuel Injector