Tiguan 23456 is stuck at low speed.

Tiguan's speed can't go up because the mixture is too thin.

The reasons for the lean mixture may be the failure of the oil pump, the blockage of the gasoline filter, the failure of the fuel pressure regulator, and the uncleanness and blockage of the injector. Hurry to see if the gasoline pressure and three-way catalysis are blocked, and the computer checks the accelerator pedal and accelerator.

This may be caused by the speed difference between the engine speed and the clutch plate speed. When shifting gears, stepping on the accelerator is easy to make the engine idle at high speed. When not stepping on the accelerator, the engine speed drops too fast and there will be a setback. For vehicles with slightly poor engine torque at low speed, you can hold the throttle lightly when shifting gears, which will not cause high-speed idling, and can also avoid the sense of frustration caused by too fast speed drop.