3 Ways To Fix Allison Transmission Not Shifting Properly

allison transmission not shifting properly
allison transmission not shifting properly

Allison Transmission is an American company that is mainly known for its transmission systems. These products have amazing features on them and there is a huge lineup to select from.

You can visit a shop nearby you or check out their online page. It should have all the products that the company has in stock. You can click on them to read further information about the device.

This will also help you in selecting a product that will best suit your usage. Aside from this, most of the transmission products from the company have amazing durability. Though, there are still some issues that can be found on them.

Many Allison Transmission users have reported that their device is not shifting properly. You might also get the same issue which is why we will be using this article to provide you with some troubleshooting steps.

How to Fix Allison Transmission Not Shifting Properly?

  1. Check Transmission Oil

When driving around your vehicle, one of the most important things to look out for is the transmission oil. This keeps the equipment lubricated so that It can move easily.

The oil also helps in keeping the device healthy and should prevent most problems with it. However, with time the old can start to get thick and dirty. If this happens, then you will have to replace it completely.

Running the vehicle on older oil can be quite dangerous as the device can be stuck completely. You can easily check the oil on the transmission system or you might notice that it is giving you trouble when shifting. This indicates that the oil has gotten old and you should replace it. When removing the oil, the user should note that there is a complete procedure that has to be followed.

You start by leaving your vehicle switched off for some time. This will give it enough time to cool of the liquid before you remove it. Remove the bolts from the transmission panel, one by one to remove the old oil. Now clean off the gasket properly and make sure none of the older oil is left.

Now fill the system with your new fuel. Make sure that you follow the guidelines provided by Allison for this process. It should help you in filling the fuel and closing off the bolts correctly. Finally, start your vehicle and leave it for some time to warm the oil. You can then check for any leaks to ensure the fuel has been replaced correctly.

  1. System Heating Up

Another reason for the Allison Transmission system to give you shifting problems can be that it is heating up. This is quite common and usually happens to people who live in a hot climate. The only way to prevent the system from overheating is by installing a cooler on it. There are many different products that you can purchase for this.

Search online and check recommendations to find a cooler that will best work for your transmission. Make sure that you check for supportability beforehand to ensure you don’t run into any issues afterward.

The installation procedure should be given along with the equipment. Once you have completely installed the new cooler. The transmission system should now work without any problems. People who are still having issues with the installation can even check guides online.

  1. Check Connections

The new models of transmission systems coming out from Allison are now controlled through computers. However, if you are using an older one then you will notice that they use specific connections and vacuum lines.

If the user does not attach them correctly then the system will give you problems similar to this. You can then check all of these connections and correct them if you notice any errors.

You can even consult the manual which should be able to guide you through this. Make sure that all the lines are in their place. If you are still unable to figure out what might be wrong with the connection.

Then it is recommended that you take off all the vacuum lines completely. Now connect them back in carefully and your issue should now be gone. The process can be a little difficult for people who do not have any knowledge about this stuff. This is why it is better If you take the vehicle directly to a workshop nearby you.

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