How to Solve International Truck Transmission Issues? (5 Common Problems)

In this brief guide, we are going to provide you with common problems with International Truck transmission and what you can do to rectify these problems before they worsen.

International Truck cars mostly have an automatic transmission and do not require any manual input to shift gears while driving as most of the cars have automatic transmission. Various sensors and mechatronic systems work in coordination to shift gears automatically. 

Automatic transmissions have a global reputation for quality, reliability and durability. However, there are many problem with automatic transmissions and we’ll tell you why and how you can solve them

What are the common problems with International Truck  transmission?

Some of the most common problems with International Truck  transmission are:

• Transmission fluid leakage
• Mechatronic malfunction
• Incorrect gear ratio
• Difficulty shifting gears
• Solenoid malfunction

Why is Transmission fluid leakage a problem with International Truck  transmissions?

International Truck transmissions are very advanced and leakage proof systems and if anything is leaking out of them then this could cause transmission overheating. It is definitely a sign of a problem which may cause serious trouble for you in the future.

What are the signs of this problem with the International Truck transmission?

You would get an error such as P0842 or errors in the similar range which are associated with transmission fluid pressure. If these sensors get a low pressure this will indicate there is not enough fluid and a leakage somewhere in the transmission.

How to solve this International Truck transmission problem?

Detecting where the leak is and closing it, is the most obvious solution to fix this sign before it causes mechanical damage to your car. Usually the gaskets or the seals in the transmission are worn out or broken to cause a fluid leak.

Why is Mechatronic malfunction a problem with International Truck  transmissions?

Automatic transmissions are very advanced but dependent on a lot of mechatronic components. If these mechatronic components fail then automatic transmission is unable to function properly and results in poor drive

What are the signs of this problem with the International Truck transmission?

Error codes appear when the mechatronic sensors fail and in the majority of cases when the cable connecting the sensor to the transmission control unit has come loose.

How to solve this International Truck transmission problem?

Make sure that the cable is properly connected to the sensor or the sensor itself is working. These are the ways of fixing this malfunction on the International Truck.

Why is Shift Solenoid malfunction a problem with International Truck transmissions?

Shift solenoid malfunction means there is a problem with the gear shifting. An International Truck transmission changes gear by directing pressurized transmission fluid to move clutches and bands around. The computer controls all of this with little spring-loaded devices called solenoids.

What are the signs of this problem with the International Truck transmission?

P0750 is the code that will be shown if there is a shift solenoid malfunction with the International Truck transmissions. This is a generic code which you will get using OBD-II for your transmission.

How to solve this International Truck transmission problem?

Some common solutions are changing the transmission fluid and filter or replacing faulty solenoids. Also you can repair or replace a faulty transmission pump.

Why is Difficulty shifting gears a problem with International Truck  transmissions?

You would want a seamless and easy shift even at low throttle input, so if your International Truck transmission is shifting harshly or with difficulty even at low speed then there is definitely a problem.

What are the signs of this problem with the International Truck transmission?

You would immediately notice and sense if the International Truck transmission is shifting with difficulty from one gear to another as this is one of most important issues with International Truck.

How to solve this International Truck  transmission problem?

Firstly try replacing the transmission pressure sensor, if that doesn’t work then check for an oil leak in the servo assembly of the particular gear. These are primarily two fixes for this problem.

Why is Incorrect gear ratio a problem with International Truck  transmissions?

If the International Truck transmission is with an incorrect gear ratio then it can cause anything from shift solenoid problems to transmission fluid problems.

What are the signs of this problem with the International Truck transmission?

P0730 is the code that will be shown if there is an incorrect gear ratio with the International Truck transmissions. This is a generic code which you will get using OBD-II for your transmission.

How to solve this International Truck transmission problem?

Wires connecting sensors to the transmission control module and other electrical connections should be inspected and any damaged or corroded wires in and near the transmission control module should be repaired or replaced to fix this issue.

How to precisely diagnose these common problems in International Truck  transmission?

If you need to precisely diagnose these common problems then you need to use a diagnostic tool which is software based and can be connected to the vehicle electronic system as International Truck  transmission fully electronically controlled automatic transmission.

How to prevent getting these problems in the first place?

To prevent these problems, you need to change the International Truck  transmission oil as per the manual or when it is too dirty. This is the easiest and most effective way to take care of your vehicle transmission and also drive your vehicle in a recommended way.

FAQs: International Truck transmission problems

How do you check transmission fluid on an international 4300?

Firstly, Pull out the transmission fluid dipstick located at the back of the engine near the firewall. Wipe it off, replace it and pull it out again. Check the level against the markings at the bottom of the dipstick. A low level should be addressed immediately with a transmission specialist.

Who makes ProStar trucks?

The International ProStar was manufactured by Navistar International from 2006 to 2017. Marking the introduction of the “Star” branding nomenclature to International, the conventional-cab ProStar replaced the 9400i (and shorter 9200i).

Conclusion

In this brief guide, we have provided you with common problems with International Truck transmission and what you can do to rectify these problems before they worsen.

If you have any questions or comments please let us know.

Citations:

https://www.transmissionrepaircostguide.com/International Truck-sierra-1500-transmission-problems/