What Causes an Automatic Transmission Vehicle to Stall at Low Speeds?

[Kelsey]

Automatic transmission stalling at low speeds can be caused by the engine running out of fuel, water entering the engine, or the use of poor-quality fuel leading to carbon buildup and engine stalling. How to Read the Fuel Gauge: Typically, the fuel gauge has two letters: 'E' stands for empty, and 'F' stands for full. Inside the fuel gauge, there are 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 magnetic field strength of the two coils, which in turn determines the direction of the needle's deflection. Water in the Engine: If water has reached above the dashboard level, the entire vehicle's interior needs to be disassembled, cleaned, and dried. Additionally, the wiring and electronic components should be inspected, with rusted parts and connectors cleaned. It is recommended to replace connectors and electronic control units that show significant rust. Check the engine for water ingress. After completing these checks, reconnect the battery and verify 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 accumulate in the piston grooves, causing the piston rings to stick together. This can lead to the piston rings becoming jammed and unable to seal properly. The 'stuck' piston rings significantly reduce their ability to scrape and seal oil. Additionally, sludge can clog the oil return holes, preventing oil from flowing back normally and leading to increased oil consumption.