What is the reason for an automatic transmission car not moving when shifted to D gear?

2 Answers
StDallas
09/01/25 6:33am
Because after an automatic transmission car stalls, the engine stops rotating immediately, even if it is in D gear. The reasons for an automatic transmission car not moving when shifted to D gear are as follows: Torque converter: The torque converter shaft is seized, causing the fuel injection pump to stop working. Lubricating oil: The lubricating oil passage is blocked, leading to insufficient lubrication, which results in the planetary gear carrier being burned out. Oil pump shaft: The oil pump shaft is broken, causing the oil pump to stop working or the differential to lack oil and burn out. Transmission: The transmission oil pan is damaged, causing all the transmission oil to leak out and resulting in vehicle issues. Solenoid valve: The transmission valve body or solenoid valve is damaged and not functioning. Loose linkage: The linkage or cable between the shift control handle and the manual valve rocker arm is loose, keeping the manual valve in the neutral or parking position.
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VanSebastian
09/14/25 2:24am
I've been driving automatic transmission cars for over a decade and have encountered many cases where the car won't move in D gear. There are usually several possibilities. The most common is when the handbrake or brakes are stuck and not fully released, preventing the car from moving, especially after parking on a slope. Then there's insufficient or overly dirty transmission fluid, where inadequate oil pressure leads to power transmission failure - often caused by long-term neglect of fluid changes or leaks. Another possibility is a faulty gear position sensor; if the car can't detect the D gear signal, it will refuse to move. When facing such issues, don't force it - try turning off the engine and restarting first. If it still won't move, you'll need to visit a shop to check oil pressure and electronic systems. Regular monthly fluid inspections can prevent such surprises, as driving safety is paramount, and delayed repairs might cause more severe transmission damage.
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