Mixed Up the Trans-Cooling Lines

What Would Happen if You Mixed Up the Trans-Cooling Lines? – Disastrous Consequences

The transmission cooling Lines are a very important part of the automobile. They are responsible for cooling the fluid by carrying it from the transmission to the radiator. A common mistake that may be made by any individuals with a lack of experience is to, unfortunately, mix up the Trans-Cooling Lines.

So being a human, the same was repeated to me, and I had to face the consequences in the shape of improper cooling along with other multiple issues in my car.

Well, to fix it on my own, I searched the internet and came to know many important things. For the convenience of others, I tried to cover all the related issues in this Article.

Rapid Reply:

If you’re short of time and want to know What Would Happen if You Mixed Up the Trans-Cooling Lines? then these lines will help you:

The gearbox or Trans-cooling lines are responsible for transferring gearbox/ transmission liquid from the transmission to the radiator, where it gets cooled. If these lines become entangled, the transmission liquid will be unable to cool appropriately, which can cause a variety of issues that are mentioned below. 

Consequences of Mixed-Up the Trans-Cooling Lines?

The following issues arose as a result of the trans-cooling lines being messed up:

1. Overheating:

Overheating is one of the problems that can be faced as a result of the mixing up of transmission cooling Lines. The transmission fluid is formulated to perform at a specific temperature, and if it gets overheated, the transmission can fail. Additionally, the parts of the radiators that cool the transmission liquid can also get damaged by overheating.

2. Molten hosepipes:

The use of improper hoses can affect the liquid circulation and may result in overheating of the transmission liquid. This overheating of transmission liquid can melt the hose, and it may leak. Due to leakage of the transmission liquid, it may cause further heating and cause transmission malfunction.

Molten Hosepipes due to mixed up of trans-cooling lines

3. Engine damage:

As discussed above regarding leakage of transmission fuel, it can also leak into the combustion chamber of the Engine. Resulting in overheating of the Engine and damaging its bearings. If it happens, it can lead to the failure of the Engine.

4. Some Other problems:

Apart from these main damages like overheating, molten hosepipes, and engine damage, I have observed several other problems that may be caused due to the mixing-up of trans-cooling pipes. Let’s have a quick review of it; it includes:

5. Slippage in Transmission:

 In case the transmission liquid has not gained the appropriate cooling, it can affect the transmission efficiency, and gears can slip. Due to slipping, it will damage the transmission and will make it difficult to shift the gears. 

6. Noisy Transmission:

Due to inefficient cooling of the transmission liquid, it can damage the transmission, and the transmission will become noisy.

7. Failure of Transmission:

After all these damages, it can result in the most serious problem of failure of transmission. And all this can occur due to the mixing up of trans-cooling lines.

Also Read: What Happens if You Reverse Power Steering Lines? Fixes in 5 Steps

How to Avoid Mixing Up the Trans-Cooling Lines:

After a careful study of the problem, I concluded a few things that can help you to avoid the mixing up of trans-cooling lines:

Labeling the Hoses:

The first step is to Label the hoses before you start working on the transmission. It’ll help you to identify them easily. And you will be able to ensure that the hoses are connected to the proper ports.

Using of Diagram:

Secondly, use a proper diagram of the transmission. It will help you to connect the hoses to the proper ports and thus ensure you avoid making any mistakes.

Avoid Hasty Work:

As it’s a common mistake to mix up the trans-cooling line. And to avoid the mistake, it’s mandatory to remain careful while working on the transmission Lines. Take your time and ensure that the hoses are connected to the proper ports.

If you follow these tips, it will help to prevent the mixing up of the trans-cooling lines and any other problems due to the leakages.

How to Change the Trans-Cooling Lines:

Keep Some Things in Mind When Changing the Trans-Cooling Lines:

However, there are still some more things to keep in your mind while replacing the trans-cooling lines:

• Normally, the trans-cooling lines are near the radiator.

• Usually, the trans-cooling lines are made up of plastic or rubber.

• Usually, color coding is used to identify the trans-cooling lines

• The most important thing is that trans-cooling lines must be replaced after a minimum of 50,000 miles and a maximum of 100,000 miles.

• Consult the vehicle Owner’s manual or an experienced auto mechanic

What to Do if You Have Mixed Up the Trans-Cooling Lines?

If you are trying to work on transmission and, unfortunately, your trans-cooling lines get mixed up. It’s better to stop working on it and tow your vehicle to the nearest auto workshop. The auto mechanics are well aware of these Trans-cooling lines, and they will fix the problem accordingly.

Frequently Asked Questions:

Q1: What are common signs of mixing up trans-cooling lines?

Overheating is one of the signs that can be faced as a result of the mixing up of transmission cooling Lines.

Q2: How often should we check the trans-cooling lines?

It’s better to check them after a minimum of 50,000 miles and replace them if required.

Q3: Is it possible for me to change the transmission cooling lines myself?

It’s recommended that trans-cooling lines be replaced by an experienced mechanic as it’s a difficult task that involves expert knowledge and tools.

Q. Can I continue to drive with my trans-cooling lines messed up?

Regardless of how far you’ve traveled, it’s dangerous to operate a vehicle with mixed-up trans-cooling lines.


Mixing up trans-cooling lines can cause many serious issues that can damage your vehicle and can become more dangerous while driving. So, it’s important to avoid such mistakes, and in case it happens, then it’s mandatory to take all the precautionary measures. 

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