What are the reasons for automatic transmission stalling at low speeds?
2 Answers
Automatic transmission stalling at low speeds can be caused by the engine running out of fuel; the engine being flooded with water; or the use of low-quality fuel leading to engine carbon buildup and stalling. How to check the car fuel gauge: Generally, there are two English letters on the fuel gauge, where E stands for empty and F stands for full. The fuel gauge contains two coils, located on the F and E sides respectively. The sensor is a variable resistor controlled by the float height. The change in resistance determines the strength of the magnetic field in the two coils, which in turn determines the direction of the pointer's deflection. Engine flooded with water: If the water has reached above the dashboard, it is necessary to disassemble the entire interior for cleaning and drying. At the same time, inspect the wiring and electronic components, clean rusted parts and connectors. It is recommended to replace connectors and electronic control units with obvious rust. Check the engine for water ingress. After completing the above inspections, reconnect the battery and check if the entire vehicle system is functioning normally. If everything is normal, the vehicle can be put back into use. Engine carbon buildup: Carbon deposits can accumulate in the piston grooves, causing the piston rings to stick together. This results in the piston rings being stuck and unable to seal completely. "Stuck" piston rings significantly reduce the oil-scraping and sealing capabilities. Additionally, sludge can clog the oil return holes, preventing oil from returning normally and leading to increased oil consumption.
I've encountered the issue of automatic transmission stalling and jerking at low speeds quite a few times, which is really annoying. Possible causes include insufficient transmission fluid pressure, leading to uneven friction during low-speed gear shifts, making the car jerk. Fuel system problems are also common, such as clogged fuel injectors causing insufficient fuel supply and stalling. Engine misfiring is another factor – when a spark plug in one cylinder ages and fails to ignite, the power becomes unstable at low speeds, making stalling likely. Faulty sensors, like the throttle position sensor, can affect the computer's control of engine speed, especially noticeable at red lights or in traffic jams. Driving habits also play a role; frequent hard acceleration accelerates component wear. Don't take it lightly – regularly check transmission fluid levels and quality, and change the oil filter every two to three years. Drive smoothly in daily use, and if you notice stalling signals, visit a professional shop immediately to avoid major breakdowns or dangerous high-speed incidents. Safety first – developing good maintenance habits is crucial.
