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What is the reason for the engine cutting out while driving and then resuming after pressing the accelerator again?

1 Answers

DelVera

07/30/25 3:34am

The reason for the engine cutting out while driving and then resuming after pressing the accelerator again: It could be due to a malfunction in the throttle pedal position sensor or throttle position sensor. Issues with the idle control valve or engine control unit (ECU) can also cause this phenomenon. It is recommended to contact a 4S dealership for inspection and repair. Basic working principle of engine fuel cut-off protection: For small and medium-sized diesel engines, the fuel cut-off protection usually involves installing a small cylinder on the throttle linkage. The piston of this small cylinder is connected to the throttle linkage. Under normal circumstances, the small piston rod does not interfere with the throttle linkage's adjustment of the throttle. When the diesel engine experiences a loss of lubricating oil pressure, the pressure detection device installed in the lubricating oil pipeline will open the compressed air switch, allowing compressed air to reach the small cylinder through the pipeline, pushing the piston to move. This causes the throttle linkage to move to the extreme position in the fuel cut-off direction, completely cutting off the fuel supply, resulting in the engine stopping due to fuel cut-off.

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