Browse

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Used Cars New Cars Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

Does a CVT transmission have gear shift jerkiness?

2 Answers

DelHadley

07/29/25 12:46am

CVT transmission jerkiness is a normal phenomenon, as the jerking sensation is caused by the inertia of moving parts inside the engine. Below are the reasons for CVT transmission jerkiness: 1. Upshift jerkiness occurs because the transmission's response speed is not fast enough, and the upshift speed cannot keep up with the throttle input. This creates a jerking sensation at the moment of gear shifting. 2. Downshift jerkiness happens when the energy recovery system engages. Once the driver releases the throttle pedal or presses the brake pedal, the generator immediately starts working with the engine, placing a load on it and affecting the engine speed. This causes the engine speed and clutch plate speed to become unsynchronized, resulting in a jerking sensation. 3. Low-speed jerkiness occurs because the transmission frequently shifts between first and second gears during low-speed driving. The constant engagement and disengagement of the clutch prevents smooth power transmission in a short time, leading to low-speed jerkiness. Startup and low-speed driving may feel jerky due to turbocharger engagement at low RPMs, which affects engine speed.

Was this review help?

1

4

Share

SanKatherine

08/12/25 4:58am

I've been driving a CVT car for almost three years, initially thinking the CVT transmission was super smooth. But last month, during a sudden acceleration, I felt a noticeable jerk, like a gentle push. After checking, I found out it might be due to unstable transmission oil pressure or a minor sensor malfunction. It really startled me, so I rushed to the repair shop. The technician said the fluid had aged, causing poor regulation, and it got much better after changing the oil. CVT car owners should be wary of this small issue—don't always stomp on the gas, especially when starting a cold engine. Regular maintenance is crucial; I check the transmission system every 20,000 kilometers. Neglecting it could affect its lifespan, increase fuel consumption, or even damage the transmission unit in severe cases. So my advice is: if something feels off, don't delay—get it checked promptly.

Was this review help?

18

2

Share

Expand All

More Forum Discussions

Can the Engine Start-Stop Be Turned Off?

Engine start-stop can be turned off. The function is enabled by default. To disable the automatic engine start-stop function, simply press the start-stop button, but it will default to being enabled again the next time the car is started. Engine start-stop refers to a system that automatically shuts off the engine when the vehicle comes to a temporary stop, such as at a red light. When the car needs to move forward again, the system can automatically restart the engine. Features of Start-Stop Technology: With conventional start-stop technology, the engine automatically shuts off when the car encounters a red light or traffic jam. The engine promptly restarts on its own when the driver releases the brake pedal or presses the clutch (or accelerator pedal). More advanced start-stop systems also include brake energy recovery, which can convert part of the braking energy into electricity to recharge the battery. Purpose of Engine Start-Stop: Used during low-speed driving and repeated stops, it can automatically shut off the engine to avoid unnecessary fuel consumption. It also reduces the car's idling time, which in turn decreases engine carbon buildup, benefiting both environmental protection and the engine's lifespan.

Is Engine Cleaning and Maintenance Necessary?

For new vehicles or those with low mileage, engine cleaning and maintenance are unnecessary. However, for vehicles that have not undergone engine cleaning for an extended period, it is advisable to perform such maintenance. Prolonged neglect of engine cleaning can impair the engine's heat dissipation capacity, increase oil flow resistance, clog oil passages, and ultimately reduce engine power. Here are the benefits of engine cleaning: Cleaning Oil Passage Sludge: The engine block contains numerous oil passages. Engine cleaning agents can effectively remove sludge and impurities from these passages, ensuring the proper functioning of the engine's lubrication system. Cleaning Piston Ring Carbon Deposits: When an engine cleaning agent is added to the engine oil, it circulates along with the oil on the cylinder walls, cleaning residual carbon deposits from the piston rings and ring grooves. Engine Maintenance: Removing sludge, carbon deposits, and other substances that affect normal engine operation can improve engine performance and extend its service life. The primary purpose of engine cleaning and maintenance is to eliminate sludge inside the engine and add oil protectants to prolong the lifespan of engine components.

What are the causes of engine abnormal noise?

Causes of abnormal engine noise in automobiles include aging or loosening of engine mounts, piston slap, misfire-induced noise, and excessive carbon buildup in the throttle body or fuel injectors. Below are detailed explanations and corresponding solutions: Aging or loosening of engine mounts: Engine mounts, also known as engine cushions or brackets, are typically installed between the engine and the vehicle body, connecting the two and securing the engine in place. Their most important function is to provide vibration damping and shock absorption. Once the engine mounts age or become loose, engine vibrations will produce abnormal noises, necessitating replacement of the mounts. Piston slap: This occurs when the piston tilts and the direction of lateral pressure changes, causing the contact surface between the piston and cylinder to shift from the secondary thrust side to the primary thrust side, resulting in lateral oscillation. Consequently, the engine periodically produces a knocking sound as the piston strikes the cylinder wall. Replacing the engine oil can resolve this issue. Excessive carbon buildup in the throttle body or fuel injectors: If carbon deposits in the engine are severe, leading to symptoms such as rough idling, increased fuel consumption, and reduced power, the engine may produce abnormal noises. Cleaning the engine carbon deposits, servicing the throttle body, and replacing the gaskets and spark plugs can address this problem. Misfire-induced noise: Engine misfire primarily refers to one or more cylinders not functioning properly, typically characterized by noticeable gaps in the exhaust gas flow, severe shaking of the exhaust pipe, and distinct "popping" or thumping sounds from the engine. This phenomenon is often related to faulty ignition coils, so inspecting and repairing the ignition coils is necessary.

What is the displacement of a 1.5T engine?

A 1.5T engine is equivalent to a naturally aspirated displacement of 2.0L to 2.4L. The displacement of a car is indicated by 'L', which stands for volume and exhaust capacity. 1.5T refers to adding a turbocharger to a 1.5L naturally aspirated engine, with performance comparable to a 1.8L engine and fuel consumption similar to a 1.6L engine. The biggest advantage of turbocharging is that it can significantly increase engine power and torque without increasing engine displacement, with a typical increase rate of around 30%. A turbocharged engine is one that relies on a turbocharger to increase air intake. Essentially, it is an air compressor. When the engine speed increases, the exhaust velocity and turbo speed also accelerate, increasing the degree of air compression and consequently the engine's air intake. This allows for an increase in the engine's output power. When a turbocharger is installed, the engine's maximum output power can be increased by about 40% or even more compared to when it is not equipped with one.

What Does It Mean When the Engine Light Is On?

When the engine light is on, it means the engine malfunction indicator light is illuminated. This light indicates that there is a fault in the engine. The reasons for the engine light being on include poor fuel quality, oxygen sensor failure, and spark plug carbon buildup. Below are detailed explanations: Poor Fuel Quality: If low-quality fuel is added at a gas station, it can cause incomplete combustion of the air-fuel mixture during engine operation, triggering the engine malfunction light. Oxygen Sensor Failure: A damaged oxygen sensor or a loose/damaged sensor connector can lead to an overly lean or rich air-fuel mixture, which will cause the malfunction light to illuminate. Spark Plug Carbon Buildup: Carbon buildup on spark plugs can result in poor engine performance, including difficulties in starting, unstable idling, poor acceleration, backfiring during sudden acceleration, excessive exhaust emissions, and increased fuel consumption. Methods to Resolve the Engine Malfunction Light: Check whether the front and rear oxygen sensor connectors are loose and replace any damaged oxygen sensors; refill with high-quality fuel; perform a fuel system cleaning and dry ice cleaning of the engine cylinders.

What Does the Yellow Engine Light Mean?

Engine yellow light indicates intermittent engine faults, meaning the engine control system has detected misalignment in engine operation or sensor signals. Reasons for the yellow engine dashboard light include sensor issues, maintenance problems, and oil quality. Below are detailed explanations: Sensor Issues: Sensors include those for coolant temperature, crankshaft position, air flow, intake temperature, oxygen sensors, etc. When these sensors are damaged, have poor contact, or experience signal interruptions, the vehicle's ECU cannot accurately obtain engine data, leading to the engine fault light turning on. In this case, sensor inspection and repair are required. Maintenance Problems: Poor engine maintenance is the most common cause of engine faults. In this case, maintenance is necessary. Oil Quality Issues: Oil quality includes fuel and engine oil. The fuel added to the car usually has a label, and engine oil can be categorized as semi-synthetic or fully synthetic. Manufacturers generally recommend which grade of fuel and type of engine oil should be used. Failure to follow these recommendations over time can cause engine wear and trigger the fault light. In this case, it is necessary to replace the oil and fuel as recommended by the manufacturer.

Trending Ranking

How to Remove Acid Rain Stains from Car Windows?

How Long Can a Spare Tire Last?

What are the differences between FAW J6P and JH6?

How Long is the BYD Dolphin's Range?

What is the best mileage interval for changing car gear oil?

Do I Still Need to Press the Clutch After Starting the Car?

What are the components of the engine valve train?

Does More Teeth on the Chainring Make You Faster?

What is the symbol for the car engine start-stop button?

What is the Function of the Engine Fuel Supply System?

More Forum Discussions

What Are the Causes of Increased Engine Noise and Vibration?

What is the Purpose of Engine Deep Cleaning?

Why can't the dash cam recognize the memory card?

Does the Engine Start-Stop Technology Harm the Car?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.