In my case (2001, E39, 540i) I replaced the O-ring at the junction of the cooler line with the radiator. At their endpoints, cooler line assemblies ordinarily have push-fit clips to attach at the transmission and the cooler, which are relatively simple to undo. However, high mileage vehicles may experience failure of these lines as their rubber parts will degrade over time due to age and heat from driving. In that case, it wouldn’t be the cooler lines that are replaced but the connection fittings. Detach the white retainer clip holding both lines to the radiator support. A “seep” is most common, where you can see wetness but no drips. Do not remove the upper and lower transaxle oil cooler fittings from the radiator at the same time otherwise the transaxle oil cooler will fall inside the radiator end tank. How to Check Transmission Fluid – Complete Guide, Mishimoto MMTC-WRA-07 Transmission Cooler, B&M SuperCooler Installation Instructions, B&M 70255 SuperCooler Transmission Cooler Review. If you simply notice that a line is leaking, that can be a simple fix depending on the location of the leak and line itself. If there are two transmission coolers (the main cooler and an auxiliary cooler) there will also be lines connecting the two. The below chart shows the colors transmission fluid will be based on how good it is. Plug the cooler lines to prevent oil leakage. Doing a repair twice involves more time and expense than doing it once, and is generally avoided. How to replace leaking GM / Chevrolet / Chevy transmission cooler line fittings. In theory, the failed crimp could be removed and a new clamp of a different kind installed, but this approach would have the disadvantages common to rebuilding vs. replacing many different kinds of parts. The line is usually made of steel, ranging in width from 5/16-inch to 3/8-inch with a flare nut on the end. The only way to fix a bad transmission cooler or line is to replace it. If there are drips it’s more important to get it fixed soon. Some types of clamps can be tightened, but if the hose has begun to degrade then replacement is the best long-term choice. Depending on the transmission cooling system routing, it is not too uncommon to have the transmission cooler lines leaking at the radiator if the lines are starting to rust. The crimps on those are made with a special machine and can’t be tightened, so when a connection leaks the normal solution is to replace the whole hose assembly. The transmission has its own cooling system, which uses transmission fluid pumped through a smaller radiator, typically sitting in front of the engine radiator. On newer vehicles with non-replaceable hoses, cooler lines will usually leak at the crimp where the rubber line is clamped over the metal line. This most likely is from the transmission itself. Once your transmission temperatures start to exceed 225, you will start to greatly reduce its lifespan. For some more specific examples on common vehicles, using $100 an hour as a labor rate: These are small screw-in parts that carry the seals that bear against the cooler pipes, and which are pretty simple and cheap to replace in most cases. 1. You'll get a rough estimate for your vehicle and we'll get your car repaired urgently. Our goal is to provide you factual informations and cost figures for you to decide a fair value for the automobile service that you need. 3. Fixing a bad transmission cooler will not only save you a headache, but potentially thousands of dollars that are needed to replace your failed transmission. A new 3/8" quick connect retaining ring; O'Reilly Auto Parts sells packages of mixed sizes. Pull the bracket/lines out of the transmission and have a catch-pan ready as some fluid to come out. More likely, the transmission cooler itself may fail, and the lines will be recommended as part of the repair. This is the most noticeable signs of low transmission fluid Transmission fluid levels are critical when it comes to how your car shifts. There is no specified replacement interval for transmission cooler replacement lines. It might take some power to do pull and evacuate the old line. So, as soon as the transmission cooler lines at the radiator of your car are starting to leak, you should immediately take necessary steps to prevent a further issue from arising. Also, attach the pan bolts and gaskets to secure the new transmission cooler lines. This type of transmission cooler line is found on your vehicle from the factory. But what if it fails? Some lines are more expensive than others, and sometimes there is a lot of fluid to be cleaned up, but this typically isn’t a … One option to replacing lines is having the lines rebuilt. The first step in removing the cooler is to disconnect the transmission fluid lines at the cooler. Like mentioned before, the internal components of a transmission require the right about of fluid to stay lubricated, but this helps keeps things cool as well. A great deal of heat is generated in this process. More likely, the transmission cooler itself may fail, and the lines will be recommended as part of the repair. 9 (2) Place a drain pan under the oil cooler lines. Do the same thing to the other side to attach in a loose fit. If left unattended, the transmission will run low on atf which will increase the fluid temperature and cause premature failure. If you have an external transmission cooler that needs to be replaced, this is less labor intensive and much cheaper than replacing the whole radiator. The most obvious symptom of extreme transmission temperatures is the smell of something burning. But how hard the assemblies are to replace depends on their routing through the tightly organized engine bay, which is the primary challenge. The two transmission cooler lines or hoses are almost always replaced together. There is also an available factory auxiliary cooler which can be installed as a kit, costing about $500 in total parts and labor. Pull the line out of the transmission fitting, taking care not to bend the line. In the transmission temperature chart below, you can see how long your transmission will live at various temperatures. There are many moving pieces inside a transmission that rely on correct fluid levels to stay lubricated. Notify me of follow-up comments by email. The four hoses involved cost about $100 through dealer sources, making the job about $250 to replace the hoses. The hoses traveling from the transmission to the radiator are called transmission cooler lines. The most common transmission cooler failures are due to either a leak in the body of the cooler itself, or a clogged line caused by something flowing through the system. It doesn't matter which one you disconnect first. The transmission cooler kit you purchased will include the mountingtransmission oil cooler hardware needed to mount the cooler. If there is no auxiliary cooler, then the job is basically half the cost in parts and labor, or about $125. Get the best pricing on the highest quality transmission lines! When in good condition, transmission fluid is a very bright red, so it is very easy to notice on most surfaces. Then, use the wrench to tighten them rightly. For a 2005 Honda Odyssey, the labor time to replace the cooler hoses is 2.8 hours. Yes, it can be done. The hoses, in this case, are separable from the pipes, and factory pre-shaped hoses cost about $30. The main problem is leaks. Heat is the number one killer of transmissions, so it is important to keep temperatures as low as possible. Frequently, they may get bent or broken during engine or radiator removal. A factory cooler line set costs about $170, making the job about $300 using OE parts, and allowing for some cost of fluid. Just like a radiator, the cooler has tubes that absorb heat from the fluid, and fins that dissipate the heat into the air. The below transmission cooler installation diagram shows the transmission fluid flow direction and how the fluid will be routed through a new external cooler. The only way to fix a bad transmission cooler or line is to replace it. Since the factory transmission cooler is typically found within the radiator, this means the whole radiator will have to be replaced as well. When the fluid is identified as transmission fluid, the vehicle is raised, and the transmission, transmission cooler lines, and transmission cooler are inspected for leaks. A leaking hose could be repaired in place, but a different clamp might not work well. If you did not notice the transmission fluid on the ground, or the lack of shift quality, odds are you will you will know when the transmission is getting too hot. Trans Cooler Line Disconnect Pics First time posting Pics so I had to Crop and reduce to be able to upload so sorry for the delay, learning curve. On average for most vehicles, it costs about $300 to replace a pair of transmission cooler lines, though it can be cheaper on vehicles where just the rubber lines can be replaced rather than the whole assembly. Terrain and it appears to be a push-in type of fitting? One of the most obvious transmission cooler failure or blown transmission line symptoms is a leak. Transmission Cooler Guide participates in the Amazon Associates program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. 1/2" transmission line can be obtained from napa. However, high mileage vehicles may experience failure of these lines as their rubber parts will degrade over time due to age and heat from driving. The fluid flows from the transmission oil pan through rubber or metal lines to the transmission oil cooler, which is essentially like a radiator. Many newer vehicles, however, use non-replaceable clamps, which means replacing the entire line and hose assembly. (3) Disconnect the transmission oil cooler line quick-connect fitting at the cooler outlet using the quick connect release tool 6935. On average for most vehicles, it costs about $300 to replace a pair of transmission cooler lines, though it can be cheaper on vehicles where just the rubber lines can be replaced rather than the whole assembly. When a line leaks, there will be transmission fluid on the ground near where the leak is coming from. Metal transmission cooler lines are typically pre-bent with fittings that are held on by a flare at each end of the line. Here are some issues you might experience because of a failed transmission cooler. Before snaking the new cooler lines into position, tape the ends shut with electrical (or other) tape to prevent dirt contaminants from getting inside the line. It can depend on how a vehicle is used, but heat is one of the main things that break down transmission fluid. Discharge the nut that associates the transmission line. You will require a wrench to do this. If this is the case, it is highly recommended to perform a full coolant flush to ensure no ATF got into the cars cooling system. Without a cooler, the transmission runs hotter and can suffer more wear and early failure. If a repaired part fails again a customer would expect it to be fixed for free, and the fix would likely be replacing the lines that had already been worked on. The most obvious sign of a transmission cooling line leak is the presence of transmission fluid. Pic #1 shows the Connector with the grey plastic ring in the locked position and Pic #2 shows the plastic ring pulled out. Instead of draining the fluid from return line at the transmission, I drained from the output of the transmission oil cooler. Depending on where you live, steel transmission lines may rust out over time causing leaks, and … Since the factory transmission cooler is typically found within the radiator, this means the whole radiator will have to be replaced as well. (4) Unsnap the transmission cooler tubes from the radiator tank clips. Some other vehicles that don’t use pre-formed hoses (mostly older vehicles) can be much cheaper for parts, where the appropriate hose is sold by the foot as necessary at auto parts stores. Remove the nut securing the cooler line bracket to the transmission. For some more specific examples on common vehicles, using $100 an hour as a labor rate: For a 2013 Jeep Wrangler, the labor time to replace the transmission oil cooler line assembly is 1.2 hours. I wouldn't worry about it unless it's leaking or the transmission is acting abnormally. I assume these are the rusted lines of which they are speaking. In most applications where the external trans cooler is used in addition to the factory one, you will need to route the new transmission lines from the radiator to the external cooler. Hi all,I was wondering if anyone has replaced their transmission cooler lines and how to release the radiator side. This can be one of the most noticeable clogged transmission cooler symptoms. In some cases there are two transmission coolers; one inside the radiator as well as one mounted outside. Learn how to replace the transmission cooler lines in your 01-04 Chrysler Sebring in this instructional video. Costs of Transmission Cooler Line Replacement. Transmission cooler lines replacement. step 1 : Removing the Air Intake Box Jump to 0:29 Loosen the air intake hose clamp with a flat blade screwdriver If this is the case, it is highly recommended to perform a full coolant flush to … Before attempting to remove, replace or rebuild the line, try to locate the source of the leak. Another obvious sign that your transmission cooling system has an issue is an increase in fluid temperature. What Is Transmission Cooler Lines Replacement? It’s not unusual to replace the fittings at the same time as the hoses. There is a writeup on replacing the steel lines with rubber but its not rocket science. They channel hot transmission fluid to the radiator, where it is cooled, then return it back to the transmission. There will be two lines connected to the cooler, an input and an output. Find the oil cooler lines. There is no specified replacement interval for transmission cooler replacement lines. This will cause your transmission to have very poor performance. Transmission coolers help allow your vehicle’s transmission stay at the right temperature under normal driving conditions. Install the New Transmission Cooler Lines. It can be up to 5 feet in length, but it depends on the type of car. The lines could also be sent out and rebuilt, but at about the cost of replacing with new most of the time. Next, take out your new transmission cooler lines and place them carefully without bending or kinking. The cooler should be mounted ½ to 1 inch in front of the radiator or A/C condenser for vehicles with air conditioning. Remove cooler line from transmission fitting. They typically resemble brake lines and are made of metal. 2. Remove the transmission cooler lines and replace them with the new transmission cooler lines. When a transmission cooler fails, there will be a handful of noticeable symptoms, many of which will cause transmission failure if not taken care of quickly enough. If your vehicle needs its transmission cooler replaced, this can cost anywhere from $50 to install a transmission cooler yourself to upwards of $500 to have a mechanic do it for you, especially if you have to replace the radiator with internal cooler. Chevrolet / GM transmission cooler line fittings leaking solved! As with most vehicles, there isn’t any good aftermarket availability. Transmission cooler line leak symptoms 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. Lack of fluid will create more noise as things are moving around. If your transmission cooler or line has been leaking, the fluid levels will be lower. If the transmission cooler lines are leaking, the leak will originate at the cooler, a connector, or a soft line. Re: Transmission Oil Cooler Line HOW TO: Replace the transmission oil cooler line Things you will need: 3/8" quick connect tool OR; a tool capable of extracting the quick connect retainer (I used a small Allen wrench with the short end sharpened to a point). Do that for the cooler and the heat exchanger. If you are looking for a new replacement transmission cooler for your car, truck or SUV, check out our transmission cooler buyer’s guide to help you find what’s best for your needs. If the flexible hoses have a replaceable clamp to the fixed lines, then replacement is usually just the flexible hoses. Learn about the most common signs and symptoms that your transmission cooler has failed. Windshield Wiper Motor Replacement Cost Guide, Transmission Solenoid Replacement Cost Guide. For a 2011 Nissan Xterra with a 4.0 liter engine and factory-installed standard and auxiliary transmission coolers, the labor time to replace the hoses is 1.4 hours. (5) Remove the bolts attaching the transmission I took it to the dealer and they wanted 236.00 to replace them both, but only one seeps a very little amount. Transmission cooler lines leaking at the radiator puts car owners in a distressing situation. In some cases, the transmission cooler is inside the radiator, or it can be a small radiator mounted in front of the engine radiator. This is more common on vehicles designed for towing, which have a much bigger job to do keeping the transmission fluid cool. Most often the lines are metal, with flexible hoses connecting between the engine assembly to the cooler fixed on the frame. Just make sure to replace the fluid every so often. That can go awhile. Whatever system is used will have a pair of solid metal lines (a supply line and a return line) running from the transmission to the cooler at the front of the vehicle. 2. When I looked at the transmission cooler, it was marked with a pink and blue mark on the inlet and outlet tubes, so it looks like the transmission has been serviced before. I have a 2010 4 cyl. Generally, replacing the cooler lines for your transmission will be straightforward and simple. Daniel has worked for 33 years now in the automotive field, as an ASE Master Technician for independent shops and dealerships, as a Certified Chrysler Technician, as a warranty claims adjuster for General Motors. In a conventional motor vehicle, the engine produces power, which runs through the gears and bearings or the transmission, and then drives the wheels. Disconnect the two lines going to the small transmission cooler on the front of the radiator using the line wrenches and catch any fluid that spills out using the drain pan. 3. This makes the job about $320. Since the cooler’s job is to flow trans fluid to lower temps, if there is a clog in the cooler, the fluid may not be able to flow properly, which would result in overheating the fluid. The engine has the primary cooling system, with a pump circulating coolant through a large radiator. That becomes your fitting the rubber line goes on. It depends on the size of the leak. Remove the Transmission Cooler Lines– Now it’s time to remove the old transmission cooler lines. 8 Attach the new cooler lines to the radiator and the transmission as well as any hangers that they may have been suspended from. Cut the line a couple inches back. The only tool you's need is a 10mm socket wrench, and a … Jump to Latest Follow 1 - 1 of 1 Posts. Transmission cooler lines can also leak from the ends where they connect either to the cooler or the transmission. On vehicles with replaceable hoses, they usually leak first at the clamp, where a rubber hose that has become old and hard will no longer hold a seal. If you look between the radiator and the transmission, you will see two rubber hoses coming from the radiator connected to metal lines. The fittings going into the tranny need to be saved. The cost is usually about the same as for new lines, so this is more of a last resort if new lines are unavailable for some reason. In most cities, there are places equipped to make or rebuild hydraulic lines, which would be able to replace the leaking rubber lines and remake a factory-style crimp. Lift the front of the vehicle with a floor jack, then support the weight of the vehicle with two jack … This would be the most common signs that a transmission is going bad. 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