11 Causes of Car Losing Power When Accelerating (Diesel & Petrol Engine)

7. Oxygen Sensor Malfunction (Diesel & Petrol Engine)

When exhaust gasses leave your vehicle’s engine, the amount of gasses which leave is measured by the oxygen sensor. The electronic control module then uses this information to figure out the real-time air-to-fuel ratio that exists in the vehicle’s engine. The oxygen sensor is positioned inside of the exhaust stream. It enables the engine timing and fuel injection system to do their jobs efficiently. The oxygen sensor even provides support with emission control as well. But if a malfunction were to take place with the oxygen sensor, then it wouldn’t be able to accurately send information about the air-to-fuel ratio to the electronic control module. This would cause the engine to start performing poorly and it would ultimately have a negative impact on the environment.

8. Bad Injectors (Diesel common rail & Petrol Engine)

A fuel injector is an important management component of a vehicle’s engine. They are located within the fuel system of a vehicle and their main job is to spray fuel inside of the engine. The computer of the engine is what controls the fuel injector and the specific time intervals and patterns in which the injector sprays fuel into the engine. That way, the engine can perform the best that it can under different driving conditions. You will find that most vehicles on the road these days have fuel injectors in them. If a fuel injector were to become damaged or malfunction in some way, then the engine would not be able to generate a sufficient amount of power to run the vehicle. You can expect all kinds of engine performance problems to take place since the fuel injector is a crucial part of the fuel system.

9. Bad Or Weak Fuel Pump (Petrol Engine)

The responsibility of the fuel pump is to take fuel from the gas tank and transfer it into the engine of the vehicle. Not only that, the fuel pump ensure that the fuel is delivered at the right pressure so that it can meet the demands of the engine for maximum performance. If something were to malfunction or go wrong with the fuel pump, there would be acceleration problems with the vehicle and the performance of the engine would ultimately be jeopardized.

Read also: Symptoms of a bad throttle position sensor

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2 thoughts on “11 Causes of Car Losing Power When Accelerating (Diesel & Petrol Engine)

  1. Hello, my stepvan with a diesel MWM international engine is failing when you hit the gas pedal. What could be the cause?
    The truck was sitting at a storage for 3 or 4 months.

    Reply
    1. It can be learning value memory in your engine ecu is deleted due to no power source. Just make initialization, start engine warm up than drive vehicle for more than 30 minutes.

      Reply

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