Avoid Engine Failure: Understanding and Solving Problems After AFM Delete

Problems after AFM deletion can be a real headache for car enthusiasts. But fear not; this comprehensive guide is here to help you navigate through the maze of potential issues.

By reading on, you’ll save yourself from common pitfalls, gain valuable insights, and equip yourself with practical tips. 

Specifically, you’ll discover:

  1. The ins and outs of AFM technology and its deletion.
  2. Common problems post-AFM delete and their solutions.
  3. Expert advice on maintaining your vehicle’s performance after AFM deletion.

So buckle up, and let’s dive into the world of AFM delete problems and their solutions!

Advertising links are marked with *. We receive a small commission on sales, nothing changes for you.

Key Takeaways

Avoid Engine Failure: Understanding and Solving Problems After AFM Delete
  1. Active Fuel Management (AFM) is designed to increase fuel efficiency.
  2. Deleting or disabling AFM can lead to various engine problems.
  3. AFM impacts different engines in different ways.
  4. Disabling or deleting AFM can improve engine performance.
  5. AFM deleting or disabling should be done by a professional to avoid damage.

What is Active Fuel Management (AFM)?

Active Fuel Management, or AFM, is a technology game-changer in the automotive industry. It’s a system designed by car manufacturers to increase fuel efficiency and reduce gas emissions.

Here’s how it works:

  • AFM allows the engine to switch between full power and fuel-saving modes.
  • It deactivates some cylinders when full power isn’t needed.
  • All cylinders are activated when you need more power, like during acceleration.

How Does AFM Work?

The AFM system is ingenious. It’s all about making your engine work smarter, not harder. Here’s a quick rundown:

  • AFM uses a sophisticated control system to monitor your driving conditions.
  • When full power isn’t needed, it deactivates some of the cylinders.
  • This reduces fuel consumption and emissions.

But, as with any technology, AFM has its issues.

Common Problems After AFM Delete

Deleting AFM can lead to a host of problems. It’s not a decision to be taken lightly. Here are some common issues:

  • Excessive Oil Consumption: AFM systems can cause excessive oil consumption. After an AFM deletion, this problem can persist or even worsen.
  • Lifter Failure: AFM lifters are known to fail. After deleting AFM, the lifters can continue to cause problems.
  • Engine Failure: In some cases, AFM deletion can lead to engine failure. This is a serious issue that can result in costly repairs.

The Impact of AFM on Different Engines

AFM affects different engines in different ways. For instance:

  • Vortec engines are known to have issues with AFM.
  • Some engines may experience improved performance after AFM deletion.
  • Other engines may suffer from reduced fuel efficiency.

Understanding the impact of AFM on your specific engine is crucial before deciding to delete it. In the next part, we’ll delve into the benefits of deleting or disabling AFM and how to do it safely. Stay tuned!

The Benefits of Deleting or Disabling AFM

Deleting or disabling AFM isn’t all doom and gloom. It can bring some significant benefits:

  • Improved Engine Performance: With all cylinders firing, your engine can always deliver full power.
  • Reduced Oil Consumption: Deleting AFM can help curb excessive oil consumption, a common issue with AFM systems.
  • Prevention of Lifter Failure: AFM lifters are prone to failure. By deleting AFM, you can avoid this issue altogether.

How to Disable AFM

Disabling AFM is a less drastic measure than deleting it. Here’s a step-by-step guide:

  1. Purchase an AFM disabler device.
  2. Plug the device into your vehicle’s OBD-II port.
  3. Follow the instructions provided with the device.

It’s as simple as that! But remember, while disabling AFM is reversible, it can still lead to increased fuel consumption.

How to Delete AFM

Deleting AFM is a more permanent solution. It involves replacing AFM components with non-AFM parts. Here’s how to do it:

  1. Purchase an AFM delete kit.
  2. Remove the engine and replace the AFM lifters.
  3. Replace the motor and reset the engine control module.

This process is more complex and should be done by a professional to avoid engine damage.

AFM Delete Kit and Programmer

An AFM delete kit and programmer are essential tools for deleting AFM. The kit includes non-AFM lifters, while the programmer resets the engine control module. They’re available from various auto parts retailers.

Should You Disable or Delete AFM?

The decision to disable or delete AFM depends on your specific circumstances. Consider the following:

  • If you want a reversible solution, disabling AFM is the way.
  • If you’re experiencing serious AFM-related issues, deleting AFM might be the best option.
  • Always consult with a professional before making a decision.

Frequently Asked Questions

Can AFM deletion affect my vehicle’s warranty?

Deleting or turning off the AFM system can void your vehicle’s warranty. It’s always best to check with your vehicle manufacturer or dealer before modifying your vehicle’s engine.

Are there any alternatives to AFM delete for improving fuel efficiency?

Absolutely! Regular maintenance, such as timely oil changes, keeping your tires properly inflated, and ensuring your engine is tuned, can all contribute to improved fuel efficiency.

Can I delete an AFM or hire a professional?

While performing an AFM delete yourself is possible, it’s a complex process involving significant engine modifications. Hiring a professional is recommended unless you’re experienced in auto repair and improvement.

How long does it take to delete or disable AFM?

The time it takes to delete or disable AFM can vary greatly depending on the method used and the specific vehicle model. Disabling AFM using a disabler device can take minutes, while a full AFM delete can take several hours.

What are the signs that my AFM system is causing problems?

Common signs of AFM system issues include excessive oil consumption, strange noises from the engine, and decreased vehicle performance. If you notice any of these signs, an AFM delete or disable is worth considering.


AFM is a complex system with its own set of challenges. Whether you choose to disable or delete it, understanding the potential problems and solutions is key.

With this guide, you’re now equipped with the knowledge to make an informed decision.

Advertising links are marked with *. We receive a small commission on sales, nothing changes for you.