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What are Transmission Lines?
Transmission lines are a key part of your car’s transmission system, and they play a role in keeping the transmission at a safe temperature. They’re actually pretty simple.
Here’s how the transmission cooling system works: transmission fluid, which acts as a coolant, circulates around the transmission. While there, the fluid absorbs heat from the transmission, which helps keep the temperature of the transmission down. That’s good for things like…well, your safety.
The transmission fluid then travels back to the transmission cooler, which is often located in the radiator. The cooler is a heat exchanger that removes heat from the transmission fluid. Once the fluid has dropped in temperature, it returns to the transmission to absorb more heat, and the cycle continues repeatedly.
Now, you can probably guess how the transmission fluid travels from the transmission to the cooler and back again, yeah? I mean, you did just click on an article about transmission lines after all.
In general, your car will have two transmission lines: the supply line, which sends the fluid to the cooler, and the return line, which…well, returns it.
Usually the transmission lines are made of steel, but sometimes they’re made of rubber. And in general, transmission lines only exist in cars with automatic transmissions.
Symptoms of failing Transmission Lines
I know, I know. Just what you love to see! Car leaks are relatively common, in large part because cars have a lot of different fluids that they contain. So, when you spot a leak, the bad news is that it could be any number of things. That said, it’s usually pretty easy to spot transmission fluid, which has a reddish color. So, if you feel like getting up close and personal with the leak, then look for the color. If it’s red, then you have a transmission fluid leak, which very well could be the result of damaged transmission lines.
Low fluid levels
Many new cars don’t have a transmission dipstick, unfortunately, so it might be difficult to spot if your transmission fluid is low. But if you’re able to check your transmission fluid leve and notice that it’s lower than it should be, then you’ve got a leak somewhere in the system. Time to check in on the transmission lines and see if they’re doing alright. They just might be the culprit.
Poor transmission performance
Poor transmisison performance will surely get your attention. Broken transmission lines mean transmission fluid leaks, and that means that your transmission will soon be operating without enough fluid. Transmission fluid acts as both a coolant and lubricant, so when it starts disappearing from the system, you’ve got problems.
How urgent is a Transmission Line replacement?
The longer you go without replacing your broken transmission lines, the less fluid your transmission will have. The less fluid your transmission has, the more damage will be done to your transmission. The more damage your transmission has, the more stress it puts on the engine, and the more damage is done to the engine.
Want to know how this ends? Hint: it involves writing a very big check.
Do the smart thing. Get your transmission lines replaced.