Why my car won’t go when I press the gas?

Published 02-02-2021 Maverik

Why my car won’t go when I press the gas?

When you press the gas pedal of your car, you expect it to move by picking up speed. But when you don’t get the desired response, it means your car has some issue with the emission or fuel system. This may happen due to various reasons which we are going to discuss shortly in this article.

If you are car is not accelerating properly, you should get it fixed immediately. This kind of problem is not to be ignored as it can be dangerous for you, especially when merging onto the highway, going up a hill, or at intersections.

5 Reasons Why Your Car Is Not Accelerating

Fixing the problem becomes much easier when you know what causes it. Your vehicle can get acceleration problems due to various reasons. But some of the main reasons may include:

1. Faulty or clogged Mass Air Flow Sensor

The mass airflow sensor is found attached to the inlet air cleaner. The main function of this component is to measure the air mass that is flowing through the air inlet. If you have a faulty or clogged mass airflow sensor, it could send wrong information to the engine ECU. One of the main signs that your mass airflow sensor is malfunctioning is that your vehicle won’t accelerate properly. You should get it fixed at the earliest.

2. Clogged fuel filter

Another possible reason could be a clogged fuel filter. This prevents the vehicle from accelerating the way it should. When the fuel filter gets dirty or clogged, the engine is unable to receive the required amount of fuel. As a result, your car won’t accelerate no matter how hard you try. In this case, you need to replace the clogged fuel filter with a new one.

3. TPS not working properly

TPS is short for the throttle position sensor. The main function of this system is to detect the opening angle of the throttle valve which is controlled by the accelerator pedal. The data is then sent to the engine ECU by the TPS. Now if the TPU system of your vehicle doesn’t work properly, you won’t be able to control the engine speed by the accelerator pedal. In this case, the speed of the engine will decrease or increase without you pressing any pedals.

4. Faulty oxygen sensor

All vehicles come with an oxygen sensor, a device that is used to monitor the emissions of a vehicle. Based on the exhaust emission, it analyses the air-fuel ratio. In other words, your car needs sufficient fuel for the fuel to burn properly in the cylinders. This allows your car to run smoothly and you can accelerate it as per your wish. The oxygen sensor sends information to the computer unit of the engine. If the sensor starts to malfunction, the engine will have no data for the air-fuel ratio. This can result in a fuel-rich mixture which can ultimately lead to slow acceleration even when the acceleration is fully pressed down.

5. Other mechanical problems

There are a lot of moving parts in the combustion engine that may fail or break. For instance, a misaligned chain or timing belt can cause the engine valves to open at the wrong times. If the timing belt is loose, the timing will be incorrect. Even a slipping clutch can cause gearbox issues. This can increase the engine speed, while the ground speed remains the same. In both cases, your car will fail to accelerate properly. If you are facing any of these issues with your vehicle, you should take it to a mechanic immediately. This is a serious issue that needs to be fixed at the earliest.

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