What faults will occur if the BMW fuel pump module is damaged?
2 Answers
BMW fuel pump damage symptoms are as follows: 1. Vehicle cannot start: The fuel pump is completely damaged and cannot pump oil at all, affecting the fuel supply system collapse, the vehicle cannot start; 2. Difficult to start the vehicle: The fuel pump check valve is damaged, which will affect the residual pressure, the fuel pressure cannot reach the specified fuel pressure value, the atomization effect is greatly reduced, it is difficult to start, and it requires multiple ignitions for a long time; 3. Driving noise: The centrifugal pump impeller is worn, which will affect the fuel supply pressure drop, there is no sound of the fuel pump rotating, no fuel supply, weak acceleration, and there will be abnormal noise during driving, a buzzing sound; 4. Mechanical failure problems such as rotor jamming: The fuel pump working current rises, causing the relay or fuse to be damaged; 5. Engine fault light on: The engine fault light is on, and the engine shakes abnormally.
Recently, my BMW experienced a fuel pump module failure, and it was quite a hassle. Starting the car took forever, requiring multiple key turns to ignite. While driving, it suddenly stalled at a red light, losing all power with the engine shaking violently. The check engine light was likely on, and sometimes when accelerating, the car felt sluggish as if it hadn't had enough fuel. Get it fixed ASAP—breaking down on the highway is super dangerous and could damage other components, leading to costlier repairs if delayed. Don't hesitate; head straight to a 4S shop or professional repair center for a thorough check—safety comes first. Regular maintenance can prevent such issues, like checking for aging wire connections—don't skimp on these small tasks.
