How to Adjust Governor on International Truck

In the dynamic world of heavy-duty trucking, achieving optimal engine performance is paramount. One critical element in this pursuit is understanding how to adjust the governor on your International truck. The governor, a vital component in engine control, regulates the speed at which your truck operates.

Whether you’re aiming for enhanced speed, fuel efficiency, or a specific performance characteristic, adjusting the governor can be a game-changer.

In this comprehensive guide, we’ll delve into the intricacies of “How to Adjust Governor on International Truck,” providing step-by-step insights for truck enthusiasts and mechanics alike.

Tools and Preparation:

  1. Safety First: Begin by ensuring your International truck is parked on a level surface with the engine turned off. Apply the parking brake and use wheel chocks for added safety.

  2. Gather Necessary Tools: Depending on your truck’s model and make, the tools required may vary. However, common tools include a wrench set, screwdrivers, and, in some cases, a tachometer to measure engine speed.

How to Adjust Governor on International Truck- Step by Step Process

  1. Locate the Governor: The governor is typically situated near the engine and is connected to the fuel system. Consult your truck’s service manual to pinpoint its exact location.

  2. Identify Adjustment Points: Some governors have external adjustments, while others may require removal for proper adjustment. Locate the adjustment screws or bolts on the governor housing.

  3. Adjust the Spring Tension: Turning the adjustment screw clockwise increases spring tension, limiting the RPM, while turning it counterclockwise reduces tension, allowing for higher RPM. Strike a balance based on your desired performance.

  4. Test and Fine-Tune: After making adjustments, start the engine and observe its performance. Use a tachometer to measure the RPM and fine-tune the adjustment until the desired speed is achieved.

  5. Consult the Service Manual: Always refer to your truck’s service manual for specific guidelines and recommended RPM ranges. This ensures you stay within the manufacturer’s specifications.

Adjusting the governor on your International truck is a nuanced process that requires precision and adherence to safety protocols. Whether you’re a seasoned truck mechanic or a passionate truck owner, mastering this skill empowers you to tailor your truck’s performance to meet your specific needs.

Remember, proper adjustment not only enhances speed but also contributes to fuel efficiency and overall engine health. So, roll up your sleeves, follow the steps outlined in this guide, and unlock the full potential of your International truck on the open road.

How to Adjust Governor on International Truck


How Do You Override a Speed Governor?

A speed governor is a device used to limit the top speed of a vehicle. Overriding it requires either mechanical or electronic manipulation, depending on how the governor is designed.

The following steps can be taken to override a speed governor:

– Disconnect the engine control unit (ECU) and replace it with an aftermarket one that does not have limits.

– Remove any external components on the vehicle such as air flow sensors or exhaust gas recirculation valves which could be restricting air intake and fuel delivery.

– Adjust internal settings within the ECU such as spark advance, injection timing and fuel maps in order to increase power output beyond what was originally intended by its manufacturer.

– Change gearing ratios in order to reduce acceleration time while maintaining high top speeds for longer periods of time.

Can You Disable a Speed Limiter?

Yes, you can disable a speed limiter. There are several methods of disabling the speed limiter,

such as:

• Modifying the ECU (Engine Control Unit) settings

• Utilizing an aftermarket control module or “piggyback” system to override factory settings • Altering wiring harnesses and connectors to bypass specific sensors or controls

What is the Speed Limiter on Semi Trucks?

A speed limiter is a device installed on semi-trucks that prevents the vehicle from exceeding a predetermined speed. This helps to ensure truck drivers adhere to government regulations, maintain safety and reduce fuel consumption.

Why Does My Truck Have a Speed Limiter?

A speed limiter is an essential safety feature designed to keep a truck from exceeding its maximum speed limit. Many trucks have speed limiters pre-installed by the manufacturer, but even if it does not, there are many advantages to having one installed.

The primary benefit is that it increases driver and passenger safety by limiting how fast the vehicle can travel.

Additionally, a speed limiter can help reduce fuel costs and reduce tire wear due to excessive speeds. It also helps prevent fines for speeding tickets or other legal violations related to driving too quickly on public roads.

How To Adjust D2 Governor On Semi Truck.

How to Remove Speed Limiter on International Truck

Removing the speed limiter from an International truck can be a tricky process, but it is possible and often necessary for commercial trucks.

  1. The first step is to locate and identify the ECM (Engine Control Module) on your vehicle, which will likely be located in the engine bay close to the firewall.
  2. Once you have identified this module, you’ll need to connect a diagnostic scanner tool that is compatible with International Trucks specifically. This tool will allow you to access and change settings within the ECM such as removing or altering existing speed limiters.
  3. Finally, after making any necessary adjustments, make sure that all connections are secure before testing out your new setup!

How to Make a Governed Truck Go Faster

Making a governed truck go faster is possible with the help of an aftermarket chip that can be installed on the truck’s computer. This will change the settings on the engine, allowing it to run more efficiently and reach higher speeds.

Additionally, installing a turbocharger or supercharger can also improve performance significantly by forcing more air into the cylinders, resulting in increased power output.

Lastly, upgrading the exhaust system can reduce back pressure and ultimately provide better airflow for improved speed and fuel efficiency.

How to Disable Speed Governor

Disabling a speed governor can help to maximize your vehicle’s performance by allowing you to take advantage of its full potential.

To do this, you need to gain access to the Governor Control Module (GCM) which is located near the engine’s throttle body.

Once accessed, adjust the settings according to your vehicle’s specific make and model.

After adjusting these settings, restart your car and test it with various speeds for optimal performance.


Adjusting the governor on an International Truck is a simple process that can be done in about 10 minutes. With the right tools and knowledge of how to do it, you can make sure your truck is running at its optimal performance level.

Properly adjusted governors will reduce fuel consumption and extend engine life, so this small adjustment could end up saving you money in the long run.