Repairing Guides

how to repair a transmission line leak

by Dr. Louvenia Franecki DVM Published 3 years ago Updated 2 years ago
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Things You Will Require

  1. Raise the Car You need an even surface for this. Park the car, and raise it up using 2 jack stands. ...
  2. Locate the Drain Pan Next, locate the vehicle’s transmission drain pan. It is a large pan made of metal and bordered by bolts. ...
  3. Locate the Cooler Lines The transmission cooler lines in the vehicle have to be located first. They run from the transmission towards the bottom of the radiator. ...
  4. Replace old Transmission Lines Replace the old transmission lines with new hoses. Attach these lines to the car using the old nuts.
  5. Locate Transmission Dipstick Pop the engine hood to locate the transmission dipstick. Now, pull the dipstick out. ...
  6. Replace Dipstick

Part of a video titled How I Fixed a Leaking Cooler Line for Free - YouTube
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And what I'm gonna do is I'm going to use multiple clamps per end and put plenty of rubber hose overMoreAnd what I'm gonna do is I'm going to use multiple clamps per end and put plenty of rubber hose over the steel lines to reduce the chance of them coming off or leaking.

How much does it cost to repair a transmission leak?

Transmission Fluid Leak Repair Cost. The average transmission fluid leak cost is between $100 and $300, depending on the car model and labor costs. You can expect $50 to $150 in parts and the rest in labor costs. Here are some examples of repairs that could fix a fluid leak cost. The prices include parts, new fluids, and labor work.

How do you fix a leaking transmission?

Transmission Fluid Leak Fix: 2009-2010 Dodge Ram 1500 SLT 5.7L V8 Crew Cab Pickup (4 Door)

  1. Getting Started - Prepare for the repair
  2. Set Up Paper - Position paper and mark wheels
  3. Assess Leak - How to see if transmission fluid is leaking
  4. Open the Hood - How to pop the hood and prop it open
  5. Remove Dipstick - Access point for transmission fluid Car Displayed: 2007 Dodge Ram 1500 Laramie 5.7L V8 Extended Crew Cab Pickup

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How to fix radiator line leak in a transmission?

How to Fix Radiator Line Leak in a Transmission

  1. Locate the area of the transmission line where fluid is leaking. If necessary, place newspaper under the lines and start the car.
  2. Open the hood of the car and check the transmission line fitting connections at the radiator to ensure they are secure and not the source of a telegraphed ...
  3. Park the car on a flat, solid surface.

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How serious is a transmission leak?

While it is not especially dangerous to continue driving with a leaking transmission fluid, it can cause catastrophic damage to your engine. As soon as you notice your car is leaking transmission fluid, you should seek to contact a certified mechanic to have your transmission fluid serviced.

How to tell if transmission line is damaged?

How much does it cost to replace a transmission line?

What Are Transmission Lines?

What happens if a transmission hose melts?

What is the radiator line on a transmission?

Why does transmission fluid burn faster in summer?

What does it mean when your transmission fluid is low?

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Can I patch a transmission line?

0:083:20How To Repair Damaged Transmission Lines (Andy's GarageYouTubeStart of suggested clipEnd of suggested clipLine with the flared ends. And then using compression fittings on both ends to connect it to the toMoreLine with the flared ends. And then using compression fittings on both ends to connect it to the to the parts of the transmission. Line after you've cut out the bad section.

What happens when transmission lines leak?

Like all parts of an engine, transmission cooling lines can wear out. If they break or develop a leak, you will lose transmission fluid, leaving your car vulnerable. Thankfully this is a fairly simple fix, and most transmission line repairs cost between $100 and $500 dollars.

Can you fix a transmission leak at home?

Changing the transmission pan gasket is probably the easiest leak to fix. Assuming that you've already removed the pan and drained the fluid, you just need to clean off the remnants old gasket, and install the new one. It's also a good idea to install a new transmission filter while you're at it.

How serious is a transmission line leak?

While it is not especially dangerous to continue driving with a leaking transmission fluid, it can cause catastrophic damage to your engine. As soon as you notice your car is leaking transmission fluid, you should seek to contact a certified mechanic to have your transmission fluid serviced.

Can you seal a transmission leak?

One of the main causes of transmission leaks is a cracked pan gasket. When there is some kind of fray in the gasket, you'll need to replace it, as the fluid inside will continue to seep out. This cause is easy to fix. All you'll need to do is purchase a new gasket (which is relatively inexpensive).

What causes a transmission line to leak?

The most common source of a transmission leak due to faulty installation is from the transmission pan. The pan is not mounted correctly or incorrect bolts are used to secure it. Something as simple as these bolts will make transmission fluid leak from the pan. Hopefully, the bolts just need to be tightened.

What is the best transmission leak sealer?

5 Best Additives to Stop a Transmission LeakLucas Transmission Fix.BlueDevil Transmission Sealer.No Leak Transmission Stop Leak.ATP AT-205 RE-SEAL.Bar's Leaks Transmission Stop Leak.

Can I drive with transmission leak?

It's possible to drive your car when its leaking transmission fluid, but it's probably not a good idea since your vehicle won't drive as required. Putting safety into consideration here are a few factors you need to consider: A common reason why your vehicle could be leaking is a gap in your transmission system.

Does Blue Devil transmission sealer really work?

0:191:24BlueDevil Transmission Sealer / Product Spotlight #5 - YouTubeYouTubeStart of suggested clipEnd of suggested clipJust add Blue Devil transmission sealer and it will work as you drive to seal your leak. DuringMoreJust add Blue Devil transmission sealer and it will work as you drive to seal your leak. During vehicle operation Blue Devil transmission sealer will be absorbed into the worn-out seals.

Can I use rubber hose for transmission line?

Yes, anyone can use a rubber hose for transmission cooling lines, provided it is designated for transmission cooler lines. Avoid putting it near the exhaust since rubber hoses are frequently prone to higher temperatures. Regular rubber hoses will break down and block the valve body if used.

Is it expensive to fix a transmission leak?

How Much do Transmission Leaks Cost to Repair? The cost to fix a transmission fluid leak in a vehicle can be as little as $150 to replace a seal and around $1,000 to for a new torque converter.

How do you temporarily fix a transmission?

0:002:49emergency TEMPORARY transmission line repair (quick fix ...YouTubeStart of suggested clipEnd of suggested clipThis up and putting the transmission fluid and check the fluid. Put the dipstick back. In pull itMoreThis up and putting the transmission fluid and check the fluid. Put the dipstick back. In pull it out.

Is it safe to drive a car with a transmission leak?

If your transmission fluid is leaking, it's not completely unsafe, but it can cause your vehicle to operate improperly. Ignoring a leak for too long could also cause serious, expensive damage to your car.

Is a transmission leak expensive to fix?

How Much do Transmission Leaks Cost to Repair? The cost to fix a transmission fluid leak in a vehicle can be as little as $150 to replace a seal and around $1,000 to for a new torque converter.

How do you know if your transmission line is bad?

Other noteworthy warning signs that your transmission cooling lines may be leaking include: You're having trouble shifting into gear; the gears are slipping, or are shifting slowly. Your transmission is overheating, or you notice an unpleasant burning smell.

How do I find a leak in my transmission line?

2:3215:05How to Find and Fix a Leaking Transmission Coolant Line - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd here's the cover underneath the engine well you can see right here that the radiator. Cover hasMoreAnd here's the cover underneath the engine well you can see right here that the radiator. Cover has oil on it so that means that this oil is coming from underneath the radiator.

Where exactly is your auto repair garage located in Las Vegas?

Our garage is located at 5585 Spring Mountain Rd in Las Vegas.

What is the Postal Code of Universal Motorcars?

89146 is our postal code.

How to schedule a consultation for your auto repair services?

Call us at 702-754-6774 and we will reserve a spot for you.

What to do if transmission leaks?

If the source of the leak is not apparent, you’ll want to clean the transmission with a suitable solvent.

How to tell if transmission fluid is leaking?

You’re most likely to notice a transmission fluid leak when parked. Droplets of fluid underneath the transmission are a telltale sign of a leak. Automatic transmission fluid is typically red in color when it’s relatively fresh and clean. Manual transmission fluid (or gear oil) is semi-transparent or honey-colored.

What happens if you leak transmission fluid?

A leak can starve your transmission of the fluid that cools and lubricates vital internal components. If ignored, a leak can cause the transmission to run low on fluid, resulting in severe damage. Then, the transmission will either need to be rebuilt (if possible) or replaced.

What is the purpose of a transmission gasket?

Most automatic transmissions have a pan that acts as a reservoir for fluid. A gasket provides a seal between the pan and the transmission . That gasket can eventually wear out, resulting in a fluid leak. Bad Output Shaft (Axle) Seal. Output shaft seal leaks are a common problem.

What causes transmission fluid to leak?

A transmission fluid leak can stem from a variety of sources, ranging from a worn pan gasket to a cracked housing. Some of the most common causes of a transmission fluid leak include: An example of a leak from the transmission pan gasket. Worn Transmission Pan Gasket.

Why is my transmission light yellow?

Recheck the transmission using the black light—any leaks should appear bright yellow due to the dye mixed in with the fluid. Once you know where the leak is coming from, you can replace the necessary component (s) to fix the problem.

How does a car's transmission work?

Your car’s transmission manipulates rotational force from the engine and transfers that force to the drive wheels. Without a functional transmission, your vehicle might run, but it won’t move under its own power. It goes without saying that the transmission is an essential part of your car⁠—and it’s also very expensive.

Where does transmission fluid leak?

The most common transmission fluid leak location is from the transmission cooler lines. Every automatic transmission pumps the fluid either through a cooler in the vehicle’s radiator, an auxiliary cooler, or both to help warm the fluid when you first start driving and to help cool the fluid once it has reached normal operating temperatures.

Why does my transmission fail?

With a manual transmission, there are really only two things that can cause a transmission to fail prematurely other than normal wear and tear: poor driving habits and an improper level/type of transmission fluid. If you have issues with your automatic transmission, check out our blog on how to identify and fix a hard shifting automatic transmission.

What is the least common leak point in a transmission?

Input Shaft Seal. This is the least common leak point in any transmission because it is hidden behind inside the bellhousing where it is safe from dirt, dust and other things that destroy seals. If your input shaft seal is leaking, then you will see transmission fluid dripping from the front of your bellhousing.

How much oil does a transition engine hold?

Most engines can hold four to six quarts of oil. Transitions, meanwhile, only hold one-and-a-half to three quarts of fluid. So, even a small leak can make a difference extremely quickly quickly. Not to mention, a leak can cost you between 100 and 200 dollars if you take your car to a shop (If you have to replace your transmission you’re looking ...

Can dipstick o rings leak?

Dipstick tube o-rings often leak intermittently and more when your vehicle is parked on a hill or slope. Replacing this o-ring is often a very easy do-it-yourself job so you may consider tackling it if you find this as your leak location.

Can you replace a transmission shaft seal?

Replacing these seals does not require removing the transmission so check with your mechanic to see if that makes sense for you. If not, BlueDevil Transmission Sealer can seal this leak as well!

What does it mean when transmission lines leak?

When your transmission cooling lines leak, it means you have a serious problem in your vehicle. Along with your engine, the transmission is arguably the most important part of your vehicle. If either the engine or the transmission fails, you no longer have a drivable car. That's why getting the transmission cooling lines fixed when a problem arises is key to maintaining a well-functioning vehicle. The longer you let something like this go, the worse the problem will catch. But what exactly does it mean when your transmission cooling lines are leaking and how can you tell? Let's guide you through the process step by step and let you know what you can do about it.

How to tell if transmission cooler is leaking?

There are a few ways to tell if your transmission cooler line is leaking just from inspecting it on your own before taking it to see a mechanic. The most obvious sign of a transmission cooling line leak is the presence of transmission fluid.

What is a transmission cooling line?

Your transmission cooling lines, often just called the transmission lines, are the lines that connect your transmission to the radiator in your car. The hot fluid cools off in the radiator and then heads back to the transmission. They're made up of a system of rubber hoses and metal or composite aluminum tubes that allow for transmission fluid to flow through them at high temperatures. If these are malfunctioning in some way, you'll be leaking transmission fluid and your system will overheat and fail pretty quickly.

Can I use rubber hoses to replace the transmission cooling line?

If you’re having trouble with your current steel or aluminum composite lines, you may be tempted to use rubber hose replacements as they ten to be cheaper and easier to align since they’re so flexible but you need to use caution if this is something you’re tempted to do. Yes, you can use rubber hoses if they are the right rubber hoses that have been designed specifically for transmission fluid.

How long do transmission cooling lines last?

Transmission lines are supposed to last the life of your car. These aren’t like fuel filters or engine oil that wear out with use and need to be swapped on the regular. That being said, there’s no way to define for certain how long these things will last. Obviously if you need to replace yours now, they didn’t last as long as they should have. The new ones you get may last just as long but should last longer. Unfortunately, there are also unforeseen issues. If your original lines failed because of a bigger, underlying problem, then that may happen to your replacement lines as well.

Is it worth it to replace a transmission coolant line?

In a word, yes . In fact, you must replace a malfunctioning transmission cooling line. If you have a leak and do not fix it, you’re on a very short clock. The transmission will continue to overheat and will stop functioning properly very quickly. Your car is just not physically able to function in this condition. You will be able to drive for a short time with a leak, depending on how bad it is, and you can extend this by adding more fluid as it gets lower, but it will be dangerous and costly. The source of the leak can and likely will get worse as time passes. Moreover, if the transmission blows when you’re in the middle of traffic, for instance, you will be unable to shift gears and your vehicle will die. That’s dangerous for you and for other drivers. Not to mention the cost associated with this. Transmission repair is going to cost anywhere from $1,800 to $3,400. Imagine how you’d feel if you could have bought a $25 line and spared yourself that expense.

What happens if transmission fluid doesn't flow?

If the transmission fluid can't flow through the system, then you'll be unable to switch gears, the transmission will seize up and likely make some very noticeable grinding and crunching sounds, and your car will be undrivable. This fluid provides two key functions in your transmission;

Why does my transmission leak?

If they do not have a perfect dry seal, transmission fluid can leak from this area. This can happen due to normal wear and tear. In addition, if the gasket isn’t properly aligned when the transmission pan was installed, it can roll off of the surface it is supposed to seal, and this can create a leak. DIY repairs can often lead to this problem.

How much does it cost to fix a transmission leak?

The cost to fix a transmission fluid leak in a vehicle can be as little as $150 to replace a seal and around $1,000 to for a new torque converter. Ignoring these leaks and allowing permanent damage to the transmission can lead to several thousands of dollars of repair costs as you must pay for a transmission rebuild or replacement. These leaks need to be investigated to prevent severe damage to the transmission. Only a transmission specialist is qualified to handle these inspections and repairs.

What happens if the output shaft seal starts to leak?

If the output shaft seal starts to leak, it can release transmission fluid, but it can also allow debris into the output shaft. These leaks can develop as the seal ages or because of something hitting the seal and dislodging it. If you suspect you have an output shaft seal leak you need to have it repaired immediately.

What to do if you suspect a shaft seal leak?

If you suspect you have an output shaft seal leak you need to have it repaired immediately. There is too much risk of transmission failure if you let this one slide. The torque converter is not a cheap repair, but it is far more affordable than having the full transmission replaced or rebuilt.

Why do transmission cooling lines need to be replaced?

Leaking transmission cooling lines have to be replaced. Again, this isn’t a costly repair, because the leak is not coming from within the transmission. Having them replaced quickly is vital, though, because waiting could mean irreparable damage to the transmission and possibly the engine .

What is transmission cooling line?

Transmission Cooling Lines Leaks. Transmission cooling lines are responsible for moving the transmission fluid into and from the transmission. This back and forth flow allows the fluid to release the heat it gained before pumping it back into the transmission. Over time, the cooling lines can wear out and develop leaks.

What is an output shaft seal?

Your car’s output shaft seal is a barrier that protects the output shaft. The output shaft is responsible for moving power from the engine to the drive wheels making it one of the most vital components of the vehicle. If the output shaft seal starts to leak, it can release transmission fluid, but it can also allow debris into the output shaft. These leaks can develop as the seal ages or because of something hitting the seal and dislodging it.

How to tell if transmission fluid is leaking?

Leaking transmission fluid – This is an obvious sign that your transmission has issues. Leaks where the cooling lines connect to the radiator are common. Look for red fluid when checking for leaks. Low fluid levels – If you suspect a problem with your transmission lines, check the fluid levels using the dipstick.

How much does it cost to fix a transmission line?

Thankfully this is a fairly simple fix, and most transmission line repairs cost between $100 and $500 dollars.

How Long Does Cooling Line Replacement Take?

Repairing the cooling line for your transmission can take quite a bit of time. You can expect to leave your vehicle at the repair shop for a day or two for this repair. Remember, transmissions are complex pieces of your engine, and the leak needs to be repaired thoroughly to protect your vehicle. The location of the leak in the engine, which dictates how hard it is to get to, as well as the severity of the leak, will impact how long the repair takes.

Why is there a variance between the costs of a transmission cooling line repair?

Why is there such a variance between the costs of a transmission cooling line repair? The variance is due to the different labor rates charged by various mechanics. In addition, each car is going to take a different amount of time to repair. The harder it is to reach the cooling lines, the more the repair will cost.

What does it mean when your transmission isn't properly lubricated?

The lines should be properly shaped. Noises – When a transmission isn’t properly lubricated, you will notice grinding or squealing noises when you shift gears.

How does a transmission work?

To overcome this issue, transmissions are designed with cooling lines. These lines pull transmission fluid from the transmission and take it to the radiator, where it cools down. They then circulate it back to the transmission where it keeps doing its job. Like all parts of an engine, transmission cooling lines can wear out.

Why won't my car shift?

Poor shifting response – If you’re noticing that the car won’t shift easily from one gear to the next, it could be due to low transmission fluid levels. While a number of issues can lead to a poor shifting response, it could be problems with the cooling lines.

Why is it important to fix transmission cooler lines?

Hence, it is important to fix these lines in a timely manner, to avoid any complications in future.

What is transmission cooler line?

Transmission cooler lines are actually a collection of hoses. These lines start from the transmission and end at the radiator. The main role of these lines are to carry hot transmission fluid towards the radiator to make it cool. After cooling, the fluid is allowed to circulate through the engine. Leakage of transmission cooler lines results in ...

How long does it take for a drain pan to drain?

Using a socket wrench, remove the drain bolt situated in the central part of the drain pan and let it drain for about 10-15 minutes for drainage. Replace the drain bolt.

Can transmission lines leak?

Leakage of transmission cooler lines can be a big problem. Repairing the lines may solve your problem on temporary basis. However this may not stay for long. The best solution would be to replace the cooler lines with new ones. This is how you are going to fix things wisely.

How to tell if transmission line is damaged?

A visual inspection will help you determine if your transmission lines are damaged or not. The damage in the transmission lines can cause a leak, which you can inspect easily. If you find a red liquid leaking under the car, inspect the gaskets and the hoses since they cannot be ruled out.

How much does it cost to replace a transmission line?

There are several places and websites that you can find transmission lines similar to your car’s model. The cost can be around $15-$50.

What Are Transmission Lines?

The transmission cooling lines or even called transmission lines, connect your transmission with the radiator of your car. The purpose of these lines is evident from their name. These lines transport hot fluid from the transmission in the radiator. The radiator cools down the liquid, which is then transported back to the transmission unit to keep it running effectively.

What happens if a transmission hose melts?

But beware that if the hoses melt, it can cause the fluid to leak while you’re driving, causing extensive damage to the transmission, ultimately leading to a complete transmission rebuild.

What is the radiator line on a transmission?

The radiator cools down the liquid, which is then transported back to the transmission unit to keep it running effectively. These lines are made of rubber hoses and composed of either aluminum or metal tubes that allow transportation of the fluids.

Why does transmission fluid burn faster in summer?

It often happens when the fluid levels are low, which indicates fluid leakage. In summers, the transmission fluid tends to burn faster. The hotter the transmission gets, the more frequent the fluid will be burned.

What does it mean when your transmission fluid is low?

are some indicators for fluid issues. It often happens when the fluid levels are low, which indicates fluid leakage. In summers, the transmission fluid tends to burn faster.

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