What are the general problems of the BMW 335i electric oil pump if it is installed?

In the gasoline injection system, the fuel pump is an extremely critical component, and once the fuel pump fails, the car will have various undesirable symptoms.

1. What problems will a failure of the fuel pump bring to the car?

1. There is acceleration weakness, and there is a phenomenon of azole car when refueling urgently. 2. It is not easy to start when starting, and it takes a long time to hit the key. 3. Abnormal noise, there is a buzzing sound when driving. 4. The engine fault light is on. 5. Abnormal engine shaking.

Second, the life of the gasoline pump pump.

1) Theoretically, this thing should have the same life as the car, so there is no limit to the number of kilometers and time. Some manifestations of gasoline pump damage: 1. When the pump core is damaged, when the fuel supply system is working, there is no sound of gasoline pump running when the key door is opened; 2. When the pump body is damaged, the engine cannot be started because the pressure relief and fuel pressure cannot reach the specified fuel pressure value, and it cannot be atomized well.

3. Don't wait until the gasoline lamp alarm is not refueled, because the gasoline pump relies on gasoline to conduct heat and cool down, and when the gasoline liquid level is too low, it will not play a role in cooling and heat dissipation, reducing the service life.

2) Failure of gasoline pump: Gasoline pump check valve damage: no residual pressure, resulting in difficulty in starting.

Centrifugal pump impeller wear: the oil supply pressure is reduced, and the acceleration is weak. Carbon brush wear:

The gasoline pump stops and cannot be started, in this case you can knock on the bottom of the fuel tank and the oil pump can still run. Mechanical faults such as rotor stagnation: The working current of the oil pump increases, resulting in damage to the relay or fuse.

Second, maintenance suggestions.

1. Most of the electric fuel pumps used in existing vehicles are installed in the fuel tank. Some vehicle access panels allow the replacement pump to be removed without disassembling the fuel tank.

2. The fuel pump in the tank is submerged in the gas to help them keep it cool will destroy the fuel pump.

3. The fuel filter should be replaced when the fuel pump is replaced.

4. A blocked fuel filter or a problem with the electrical system driving the fuel pump may cause symptoms similar to those of a failed fuel pump. Confirm that the pump is the problem before it is replaced.

5. Gasoline is highly flammable to avoid fire and personal injury.

If the oil pressure is not enough, the power may be insufficient.

Hello, this car does not have a separate fuel pump relay, it is integrated into the interior of the fuse box behind the co-pilot grocery compartment.

07 BMW 320i oil pump compound relay in the control cabinet or control box BAI. No circuit diagram is not good to specifically point out, you can mention the dao according to zhi

I look for the real thing in the characteristic of the relay which I supplied. As an electrical control device, the relay is connected to the circuit to form two control systems: the control system (also known as the input loop) and the controlled system (also known as the output loop).

The BMW 3 Series oil pump is inside the fuel tank. The function of the fuel pump is to suck the fuel out of the fuel tank, pressurize it and transport it to the fuel supply pipe, and cooperate with the fuel pressure balance force regulator to establish a certain fuel pressure. Located inside the vehicle's fuel tank, the fuel pump works when starting and engine running, if the engine is stopped and the ignition switch is still on, the HFM-SFI control module turns off the power supply of the fuel pump to avoid accidental ignition.

The symptoms of car gasoline pump damage are as follows:

1. If the gasoline pump is completely broken, it will not be able to pump oil at all, resulting in the collapse of the fuel supply system and the failure of the vehicle to start;

2. The one-way valve of the gasoline pump is damaged, which will lead to no residual pressure, the fuel pressure cannot reach the specified fuel pressure value, the atomization effect is greatly reduced, the start is difficult, and it needs to be ignited for a long time and many times;

3. The wear of the impeller of the centrifugal pump will lead to the reduction of oil supply pressure, there is no sound of gasoline pump running, no oil can be given, acceleration is weak, and there will be abnormal noise and buzzing sound when driving;

4. Mechanical faults such as rotor stagnation: the working current of the oil pump increases, resulting in damage to the relay or insurance;

5. The engine fault light is on, and the engine shakes abnormally.

Millions of car purchase subsidies.

The BMW 3 Series fuel pump module is next to the fuel pump. If the car oil pump controller is broken, the vehicle will increase fuel consumption, the exhaust pipe will be black and smoked, and the oil pump module will be damaged and need to be replaced in time, so as not to cause the symptoms of the vehicle being unable to start.

The symptoms of gasoline pump damage are as follows:

1. If the gasoline pump is completely broken, it will not be able to pump oil at all, resulting in the collapse of the fuel supply system and the failure of the vehicle to start;

2. If the check valve of the oil pump is damaged, there will be no residual pressure, the fuel pressure cannot reach the specified fuel pressure value, the atomization effect will be greatly reduced, the start will be difficult, and it will take a long time to ignite many times;

3. The centrifugal pump impeller wears the macro chain draft, which will lead to the reduction of oil supply pressure, no sound of gasoline pump running, no oil, weak acceleration, abnormal sound and buzzing sound when driving;

4. Mechanical faults such as rotor stagnation: the working current of the oil pump increases, resulting in damage to the relay or insurance;

5. The engine fault light is on, and the engine shakes abnormally.

Open the glove box in front of the co-pilot, there is a cover that can be removed, and the fuses can be seen by unscrewing the buttons on both sides.

Inside the small storage box above the clutch.

The markings are: oil pump pre-working relay -J49-(449) or oil pump relay 1-J17-(449).

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If there is no oil in the BMW 323 car, the oil pump of this car is prone to problems.

First, the gasoline pump itself relies on the gasoline in the fuel tank for heat dissipation, if there is too little gasoline or no gasoline, it will cause the oil pump to overheat, and the oil pump will be burned out in serious cases.

Can BMW 323 break without an oil pump.

Hello, I'm helping you sort out the answers to your questions, please wait a moment

Hello, dear, car master exclusive technician for you to serve the rolling wisdom, attentive, careful, concentrate on answering your car questions, for you to find the corresponding problem solutions and solutions, will provide you with satisfactory answers! We hope you find this service helpful. If it helps you, we look forward to your likes and attention.

I wish you good luck in the Year of the Tiger BMW 323 If there is no oil in this car, the oil pump of this car is prone to problems, the first gasoline pump itself is to rely on the gasoline in the fuel tank to dissipate heat, if there is too little gasoline or there is no gasoline, it will cause the oil pump to overheat, and the oil pump will be burned out in serious cases.

Said that the oil pump is blocked.

A clogged oil pump filter will also cause problems, and it is opened to stand upright.

How much does it cost to get a new oil pump.

Mine is 20.

Then your vehicle is still within the warranty period, you can go to the 4S shop to ask for a free replacement, the ** of this original accessories should be about 1700.

It's been almost three years. That's half blocked.

It's blocked, and this one needs to be cleaned up the oil circuit and fuel injector.