What is the reason why the Volkswagen Sagitar doesn't move when in D gear but moves when accelerating?
2 Answers
Possible reasons why the Volkswagen Sagitar doesn't move when in D gear but moves when accelerating are as follows: 1. The engine's throttle opening is too small, and the fuel injector's fuel injection volume is insufficient. 2. The transmission control system and actuator signals have issues, causing the shift valve to be insensitive and resulting in incomplete gear shifting, preventing the oil passage from opening. Here is some related information: Most automatic transmission cars (especially those without AUTOHOLD function), after the engine starts, when you press the brake and shift to D gear (drive), releasing the brake will cause the car to move slowly under idle speed (similar to manual transmission's 1st gear), but the speed is relatively slow. The car will only accelerate when you continue to press the accelerator.
A friend of mine has a Volkswagen Sagitar with the same issue—it doesn't move when shifted into D gear and only creeps forward when the gas is pressed. This is mostly a transmission problem. The torque converter might be faulty; it's supposed to transfer power when engaged, but when worn out, it only delivers enough torque when accelerating. Alternatively, the clutch plates could be worn, causing slippage at low speeds. Another common cause is insufficient or degraded transmission fluid, leading to poor shifting when oil pressure is low. I must remind you that modern automatic transmissions are highly sophisticated, and unresolved issues can damage more components, such as gear sets or electronic modules. It's advisable to check the fluid condition promptly and have a professional repair shop diagnose it before the problem worsens.
