What Causes an Automatic Transmission Car Not to Move When in D Gear?
2 Answers
Because after an automatic transmission car stalls, the engine stops rotating immediately, even if it is in D gear. The reasons why an automatic transmission does not move when shifted into gear are as follows: Torque converter not working: The torque converter shaft is locked, causing the fuel injection pump to stop working. Lubrication oil passage blocked: The lubrication oil passage is blocked, leading to insufficient lubrication, which results in the planetary gear carrier burning out. Oil pump shaft not working: The oil pump shaft is broken, causing the oil pump to stop working or the differential to lack oil and burn out. Oil pan damaged: The transmission oil pan is damaged, causing all the transmission fluid to leak out and leading to vehicle issues. Solenoid valve not working: The transmission valve body or solenoid valve is damaged and not functioning.
I've been driving for twenty years and have encountered several issues with automatic transmissions not moving when shifted into D gear. It happened once during a long trip when the car simply wouldn't move, and I found out it was due to a problem with the torque converter. Possible causes include dirty or insufficient transmission fluid leading to hydraulic system failure, or worn clutch plates preventing power transfer. Additionally, the gear lever not being properly engaged or a faulty control module can also trigger this issue. From my experience, if this happens, don't panic—first check if the engine is idling normally, then turn on the hazard lights and pull over to seek help. Regular maintenance is crucial, such as changing the transmission fluid and filter every two years, which can significantly prevent such failures. Never force the car to drive, as this could damage internal transmission components, making repairs more expensive and time-consuming.