How to Fix Car Acceleration Problems?
November 01, 2022

How to Fix Car Acceleration Problems?

You expect the amount of force you apply to the gas pedal will cause the car to accelerate. Your car has several possible problems when it stutters or accelerates very slowly. Even worse, until you get it fixed, your car is a danger to other drivers. Acceleration is what carries your vehicle forward, so the cause may be anywhere. You can access the knowledge of acceleration problem causes right here! If you want to fix some of the most common acceleration problems yourself, read on!

How to Fix Some of the Most Common Acceleration Problems

Combustion engines are built so that fuel can be given to the engine and exhaust gases may be released outside of the vehicle. The combustion process, which powers your car forward, requires the cooperation of numerous parts and sensors. 

In the event that this system fails, the vehicle can have issues with acceleration. These problems more frequently result from a gasoline system breakdown.

There are occasions when the problem is straightforward and can be resolved by you. While some faults may require a visit to the mechanic to answe “How to fix car acceleration problems?” question, they sometimes do not point to a more serious engine issue.

How High are You?

Air density decreases with increasing height. It can be the altitude if your car starts performing strangely while you drive upwards or on steep inclines. Up to 20% less power may be produced due to the air's lower nitrogen, oxygen, and other elements. Maintaining clean fuel injectors and air filters will help your car run more efficiently.


  • The impacts of altitude on a vehicle start to take effect as soon as it begins to rise, in contrast to typical wear and tear, accumulating over time. The majority of the time, modern cars can easily navigate steep inclines. However, altitude places a significant load on an engine and may cause minor difficulties to worsen.
  • Because there is less air to feed the internal combustion engine, reduced oxygen at high elevations can result in ineffective, sluggish engine performance. Typically, for every 1,000 feet of altitude gain, an engine loses 3% of its rated power. This means that if you drive your car from sea level to Big Bear Lake, you could lose as much as 20% of its horsepower.
  • Engines require less octane in the gasoline to properly start running at higher altitudes. Fuel with an octane rating as low as 85 is available in some high-altitude areas, such as Colorado. Your check engine light can turn on if you put this lower octane in your car and then travel to lower heights.

Engaged Emergency Brake

When the emergency brake is wholly or partially engaged, it forces the brake pads against the back tires, causing the brake to skid. 

The emergency brake could be disengaged to fix the problem. To ensure that the rear brake pads, bearings, and wheel drums aren't distorted by friction and overheating, you might still need to consult a mechanic.

Is Your Fuel Alright?

You cannot accelerate your car with a nearly empty tank of fuel obviously. Harmful gas may contain dirt and debris that clog your filters and pipes. The improper octane of gas for your car might potentially have serious consequences. You will need to refuel the tank with the proper fuel to eventually fix a car slow to accelerate. Below are the most common fuel related acceleration problems.

  • A weak fuel pump
  • An obstructed fuel filter
  • A faulty fuel pressure regulator
  • Restricted fuel injectors
  • A dirty or failed throttle body
  • A collapsed air intake or severely restricted air filter

Malfunctioning Spark Plugs

Spark plugs burn continuously while being driven, degrading their effectiveness. It might be challenging to change a spark plug in some car engines. Accessibility issues and components that stick, like replacing ignition coils or boots or unscrewing spark plugs, will be your biggest obstacles. 

The upper plenum/intake manifold must be taken out to access some spark plugs, which might be challenging. A new plenum gasket will be required in these circumstances.

  • Remove any obstructions first. A replacement gasket is required if your vehicle's design has the environment to remove the upper intake plenum. 
  • Once inside, you could find it challenging to remove the rubber plug wire end and inner metal terminal from the spark plug. Be careful not to rip the wire terminal from the plug wire end or rip the rubber boot off the wire.
  • Coils made by COP (Coil on Plug), attach to the spark plug end directly and employ a lengthy rubber insulator boot. You can begin the removal procedure by releasing the electrical connector from the ignition coil. 
  • To make the connector release so that it can be unplugged, press down or pull up on the locking tab. You might need a little screwdriver to assist in depressing the locking tab.

You’re Sure Everything is Fixed, But Still Having Acceleration Problems?

Pedal Commander's advanced app, which supports Bluetooth, makes it simple to use from your smartphone. With the use of this technology, you can modify your acceleration remotely. With its four configurable modes—ECO mode, City mode, Sport mode, and Sport+ mode—Pedal Commander also pays close attention to your driving comfort while considering various road and weather circumstances.

We declare that all you require for better acceleration is Pedal Commander. Once all of your acceleration problems are resolved, try out Pedal Commander! It is the market's most dependable and helpful throttle response controller. With Pedal Commander, you may have a quick and smooth ride since it provides instant access to the engine power. Our device is easy to install and unplug in just 15 minutes because of the high-quality technology used in its design.