Maxxforce 10 Engine Problems

The Maxxforce engine has some issue like: turbo valve, fretting connectors, overfueling, and engine failure.


MaxxForce engines are designed to power diesel tracks, engines for the 2008 year model. These engines are made under the umbrella of the International Truck and Engine Corporation and are used in RVs. Among the engines designed by this company is the MaxxForce 10. These engines use the 1-6 architecture and are different from the previously made engines due to their closed crankcase ventilation. The engine also has an extensive EGR system.


  • Turbo Air Control Valve


Most of the issues with the Maxxforce 10 engine could be traced to the turbo air control valve. The Turbo air control valve is connected directly to the ECM. The ECM dictates the amount of fresh air that the control valve can supply to the engine. It also helps to dictate how long the fresh air will go on. By doing this, it helps in reducing the possibility of emission. However, the turbo air control valve can become loose due to the wind underneath the hood. Thus, the engine will not be protected from overheating, which can pose a danger to the engine and the driver.


  • Fretting Of The Connectors


Another issue that you are likely to experience with the MaxxForce engine is the fretting of the connectors. This happens when the control valve starts failing. When the valve becomes loose, it starts to move around due to the wind found under the hood. Thus, it leads to the pins wearing down. If this issue is not noticed and fixed in time, then it will connect intermittently.


  • Over Fueling Of The Engine


Overfueing of the engine could lead to sport exhaust which in the Maxxforce 10 engines goes to the EGR valve. The EGR is used to recycling the finely metered amount of exhaust gas to the engine. It ensures that your engine enjoys increased engine efficiency, uses less fuel consumption, and lowers carbon emission. When the EGR is not working, then you will deal with the over-fueling of the engine. When you have the engine’s over-fueling, it will cause the truck to run poorly and thus damage the engine.


  • Engine Failure


Due to the many issues experienced within the engine, you will find that when one is using the MaxxForce, you will get an increased number of breakdowns, downtime, and even need for repairs. If you do not get to the root of the problem, you will deal with engine failure. Replacing the engine does not come cheap, leading to the companies operating the trucks getting lost. It will also lead to you spending a significant amount of time in and out of the garage while you could be addressing the issue.


  • Issues With Resale

In case you are planning on replacing the truck after using it for some time, with the MaxxForce engine’s issues, the ability to sell the truck will be less. That is due to the poor service history that the truck has and its reputation.



Who Makes It?

The MaxxForce 10 engine was built for powering Class 8 TranStar and WorkStar trucks with 310-350 horsepower and 1,050-1,150 ft-lbs of torque. And, subsequently, the MaxxForce 11 and the MaxxForce 13 are the International Engine Group’s newest big-bore diesel engines, which have been developed for the Class 8 truck market in its collaboration with MAN Truck & Bus. Known as Navistar DT engines, the MaxxForce 10 Engines are available currently in three configurations. All three have been updated for complying with the EPA’s emissions regulations.

Both the MaxxForce DT9 and 10 have been built on what can only be called a legendary engine platform. On December 13, 2006, in Warrenville, Illinois, the International Truck and Engine Corporation, which is a Navistar company, announced the new MaxxForce™ International Diesel Powered engines for the trucks related to the 2008 model year. At that time, the company provided both the technical details and specifications for the MaxxForce™ mid-range I-6 family

Today, the MaxxForce™ DT, MaxxForce™ 9, and the MaxxForce™ 10 have been built upon International’s proven design and construction to serve as the next International diesel engine level. The brand is well-known for its legendary durability, reliability, serviceability, vocational capabilities, and especially the high resale value.

According to the president of International Engine Group, the company’s I to 6 engines, (and especially the legendary DT), offer truck owners an amazing history of reliability and quality. Those engines have actually become the engine of choice for Class 6-7 commercial bus and truck applications for several decades. This has been extremely helpful with International’s ability to hold an approximately 40 percent market share across the entire market for medium-duty engines.

So, since overall performance means a lot more than just torque, power, and the ultimate joy that they feel when driving their trucks. It also means that they can always count on their engine for getting the job done from taking their kids to school for parents, plowing all the snow for homeowners, or for just making money for small business owners. It also means having the reliability for starting and running each and every day plus the durability for performing for years to come.


So you can see this engine has its issues, buyer beware.

Navistar Settles Class Action Over Faulty MaxxForce Engines