Emgrand EC718 automatic transmission jerks during start-up?

[OCarlos]

Emgrand EC718 automatic transmission jerks during start-up due to lean air-fuel mixture, delayed ignition, weak spark, or transmission malfunction. Symptoms of engine acceleration weakness: When the engine is running, pressing the accelerator pedal doesn't immediately increase RPM, showing sluggish response. During acceleration, engine vibration and RPM fluctuation may occur, sometimes accompanied by backfire or popping sounds. Specific causes of engine acceleration weakness: Intake manifold leaks causing lean air-fuel mixture; low fuel pressure; clogged fuel injectors or fuel filters reducing fuel delivery; malfunctioning sensors (air flow meter, intake manifold absolute pressure sensor, throttle position sensor) failing to increase fuel supply properly; incorrect ignition timing due to faulty sensor signals; weak spark from faulty spark plugs, ignition coils or high-tension wires; dirty throttle body; malfunctioning EGR system; clogged exhaust pipe; low cylinder compression; turbocharger system failure.

[LillianFitz]

I've driven the Emgrand EC718 automatic transmission for several years, and jerky starts are quite common. It feels like the car is lurching, as if the power can't keep up. This could be due to aged or insufficient transmission fluid, or dirty fluid hindering smooth gear shifts. Another possibility is issues with the engine ignition system, such as dirty spark plugs or failing ignition coils causing uneven combustion. Additionally, carbon buildup in the throttle body can block air intake and affect acceleration response. When starting, avoid stomping on the accelerator; instead, apply throttle gently to let the transmission adapt. Regular maintenance, including fluid changes and throttle body cleaning, can prevent these issues. The Emgrand is generally sturdy, but don't neglect maintenance, especially for critical components like the transmission system. It's advisable to have a professional diagnose it to prevent minor issues from becoming major problems.

[DelLilliana]

When using the Geely Emgrand EC718 automatic transmission, I often experience jerky starts, especially noticeable when the engine is cold. There are multiple reasons for this: first, unstable transmission oil pressure or abnormal oil pump operation affects smooth starting. Second, faulty electronic control modules like the TCU may cause delayed signal transmission leading to jerking. Third, a dirty or malfunctioning throttle position sensor related to the engine can result in uneven acceleration. Don't tough it out - address these issues early to avoid damaging your car. Make it a habit to warm up the engine for a few minutes before driving for smoother starts, which is good for your vehicle. Don't exceed oil change intervals and regularly check the engine oil - these practices can save you headaches. Jerky starts not only affect driving comfort but also increase fuel consumption. Small issues can develop into major problems if neglected, so take them seriously.

[SabrinaFitz]

The root cause of jerky starts in the Emgrand EC718 automatic transmission lies in the transmission system: wear of the torque converter or clogged oil passages result in inconsistent power delivery. Deteriorated transmission fluid reduces lubrication effectiveness, leading to jerking. Electronic control issues, such as erroneous sensor signals, disrupt the shifting logic. Check the fluid level and color; if there is an unusual odor, replace the fluid and clean the filter. Engine ignition components should also be inspected to ensure stable combustion.