A mechanic replaced >> > > the fitting and line claiming the the line had a pinhole in it but it >> > > is still leaking. It took 1/3 gallon to refill the reservoir to the cold full line. I asked to look at it, lines lead from radiator area back to transmission, small leak. It is leaking coolant not oil. Taste the leak to see if it's sweet. Excessive heat can also deform the engine, permanently damaging it. It is leaking between the metal flange and the pipe at the compression fitting. If the leak is significant, you'll notice coolant on the ground or see steam gushing out from underneath the hood. It looks like there are two high pressure oil cooler lines that thread into this side of the radiator just under the top radiator hose. From your description, "... oil flooding out..." it would appear that your oil cooler has burst/split, and is pumping transmission oil out onto the floor. Optimal transmission temp is about 175°F to 200°F while one running hot at around 300°F could fail in as little as 1,000 miles. You do not have the required permissions to view the files attached to this post. Pics? Not oil, but coolant is leaking from behind them where the metal fittings meets the plastic. I've tried to reseat the fitting, but it still slowly drips out between the pipe and the fitting. Coolant lines to the turbo bearing housing are also likely leak candidates. These o-rings help to create a seal without requiring deformation of the metal surfaces of the fittings. 2009 Silverado hd tow package. If the clip is not installed exactly how it should then the line will continue to pop off. 97 tahoe with 225k miles. Coolant leak around radiator high pressure oil lines. wjburken likes this. The most obvious sign of a transmission cooling line leak is the presence of transmission fluid. If you check that and everything is fine, then you should check the oil cooler. Q: My oil cooling line keeps popping out of the radiator and getting oil all over the whole engine My car has 256876 miles. If this is so it will mean a replacement radiator/oil cooler … Stop-leak products are meant for hairline imperfections and minuscule cracks, not the kind of leaks that result in a puddle beneath your vehicle or a coolant smell permeating your car. Oil cooler lines will usually leak oil, as oil is what flows through those lines. Is it coming out around the tube or the threads? On its own, water would freeze at 32 °F (0 °C) and boil at 212 °F (100 °C), making it unsuitable as an engine coolant. Print this page ; Share this page × Ad. Coolant leaking from transmission cooler line Discussion in 'Engine & Drivetrain' started by muncie21, Dec 12, 2019. It's got about 370,000km (231,000 miles) and I did an engine and transmission swap last year. A burst hose will quickly release all the engine’s coolant, but replacement is usually straightforward. Many individuals will think the head gasket is blown. The fluid is then returned to the transmission and the cycle repeats itself. I agree,a new radatior and transmission line fittings are a jiffy tite fitting which have a huge advantage over flare nut fittings: do not leak and much easier to remove.There is a special release tool to get the line off,the 3/8 relase tool,same with the eingine oil lines too (if it has those) which have jiffy tite fittings.The engine oil lines use the 1/2 release tool.All you do is pop off the plastic cover just enough,put the tool in making it is fully seated and turn 60 degrees which the line will come off.GM started using the jiffy tite fittings in 1996 and I like them because they do not leak and take less time to remove with the special tool. Bubbles in the radiator or in the coolant overflow tank indicate that combustion gases are being forced into the cooling system. The most obvious coolant leak solution is to find and fix the leak, but finding the leak is not always an easy task. What's the Difference Between Antifreeze and Coolant? I still have the lines sitting in my garage taking up space. Replace the radiator! The 2 lines on the right (drivers side) are the engine oil cooler lines. I have just a bit of weeping at the crimp connection and possibly at the end next to the filter as well. Diagnosing a Hissing Sound in Your Engine, How to Tell If Your Fan Clutch Is Going Bad, Engine Vacuum Leak: Symptoms and Solutions, Car Engine Radiators Require Coolant, Not Just Water, Finding and Fixing an Evaporative Emissions Leak. To cool the transmission fluid, a pump circulates it through a length of steel tubing connected to the car’s radiator. What is it and how is it to change out? Within the adapter is a gasket or rubber o-ring. There was a drop forming on the line and it … As in radiator coolers are prone to failure before you invest in a new radiator , consider buying an air to air oil cooler to cool the transmission oil . The only thing that should leak from the line is trans fluid. Be sure to use a quality hose, new hose clamps, and clean the sealing surfaces before installation. Leaking Transmisson or Cooler Lines? A mechanic replaced > the fitting and line claiming the the line had a pinhole in it but it > is still leaking. It's a plastic tank by the way. Those are plastic endcaps, not like the old brass ones where you could just replace the top tank. If the coolant leak is caused by a radiator leak, you'll want to repair your radiator. 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. To cool the transmission fluid, a pump circulates it through a length of steel tubing connected to the car’s radiator. Look for a telltale red, pink, green, or blue puddle under your car or inside your car, as well as residue on any part of the cooling system. By using LiveAbout, you accept our, How to Prevent Your Classic Car From Overheating. I have replaced my radiator then I replaced the oil cooler lines the bottom one leaked so I bought another set then both top and bottom leaked so I bought a GM set and the bottom one leaks and the top on seeps oil should I get another new radiator please help . Benjamin Jerew is an ASE-certified Master Automobile Technician with over a decade of experience in auto repair, maintenance, and diagnosis. 2. Tricks? Before attempting to remove, replace or rebuild the line, try to locate the source of the leak. 475 Posts #2 • May 24, 2015. User Info. Comment; Flag; More. As for replacing the lines i have not replaced the oil cooler lines i have replaced trans cooler lines on a 5.3 not a 6.0 an it sucked. I bought the oil cooler lines too but never got around to doing them before I sold the truck. Fluid contained in automatic transmissions becomes heated while driving due to friction created between the various moving parts. Some aftermarket suppliers supply small o-rings to place in the interface between the male and female connections. Hi there. >> > > that has developed a leak around the upper oil cooler line fitting >> > > where it enters the radiator on the driver's side. The parts stores all come up with 2 part numbers, if I recall correctly they were Dorman P/N 800-607 & 800-622. If you are talking about the fitting in the radiator, do not try to tighten. If the oil cooler starts to leak or is cracked, the engine will still perform normally. The only tool you's need is a 10mm socket wrench, and a $2 replacement O-ring. 06-29-15 01:37 PM - Post# 2558294 Alright, so I've got a 1998 Chevrolet Silverado LS Z71 K1500. If you see a puddle on the ground or smell coolant in the car, you've discovered a serious sign of a coolant leak that needs to be repaired before it causes serious damage to your engine. Cooler lines are NOT covered unless under 36,000 miles. When an oil cooler fails, it can force all the coolant out of the engine and raise the risk of an overheated engine, which may lead to possible engine damage. Oil was also dripping on the drive belt and being spewed all along the belt path. I just replaced the oil cooler seals and the oil filter housing gasket because oil was leaking from one (or more) of those seals. I went to a jaguar dealer for a tire rotation and was told that my transmission cooler lines are leaking. The oil leak was significant and causing a mess around the drivers side front of the engine. The transmission cooler lines are piped to the radiator and run through an internal circuit that’s kept separated from the coolant. Air and steam are great insulators and will prevent the cooling system from expelling excess heat. Are all 5.7 '98 radiators the same or are there variants? Want Answer 0. 1. 3. Permalink | Reply. HA HA i laughed at them. How to Fix Radiator Line Leak in a Transmission by Max Stout . Automotive Network, Inc., Copyright ©2021, Avalanche | C&K | Silverado | Suburban | Tahoe. A stop-leak product may save the day as a last-ditch effort, but if you have a coolant leak, a full diagnosis and repair will be required as soon as possible. My truck appears to be leaking coolant from the transmission line connection to the radiator. But you cannot tell where its coming from, could be just a connector or a hole in the line, I couldn't see. Bubbles in the radiator or in the coolant overflow tank indicate that combustion gases are being forced into the cooling system. This fall, a pan on the ground caught coolant. ATF cooler oil leak - rusted lines I had the same problem on my 2012 Forester X Premium, and the leak was at the front (behind the radiator) where the hose meets the trans line (as shown in the diagram in this thread). Coolant leaks are a precursor to a major engine problem, and fixing them should be high-priority. A mechanic replaced > the fitting and line claiming the the line had a pinhole in it but it > is still leaking. 2. Truck is an HD 2500, 6.0, 4x4, crew cab. Looks like the bottom one is leaking, which line is that for trans or engine oil? Transmission cooling lines leaking means either low-level of fluid or interrupted flow in the transmission. Similar to a loss of oil, an external oil cooler failure may force all of the engine coolant out of the engine. If the oil cooler adapter fails externally, engine oil may be forced out of the engine. A blown head gasket typically affects the engine’s performance. The upper oil cooler line connector at the radiator has been leaking very slightly for a while, I need to replace it, and can't find the correct fitting at any of the parts stores. Engine coolant is mostly water and ethylene glycol or propylene glycol, with several additives, such as rust inhibitors, lubricants, and dyes. Oil can get into your cooling system ( radiator ) ( reservoir ) via your oil cooler ( system ). Is this because there is no forces pushing fluid around? A sweet leak is antifreeze. Send Private Topic View Profile . What happens if oil cooler fails? Embedded in your cooling system radiator is a transmission oil cooler, it comes as part of the radiator. I ordered a Spectra Premium CU2370 radiator (w/oil & trans cooler) from Amazon (~$120/shipped) as I needed the radiator quickly didn't want it to arrive after Christmas. If the block is cracked or the cylinder head is warped, your engine needs to be taken to an auto professional for major repairs. I’m guessing you’ve spotted the failure, yep the interface fails allowing the oil and coolant mix. Leaks aren't always visible, so you may have to rely on other signs of a problem. Any one have a good source for the rad? The radiator has a transmission and engine oil cooler lines to it too. Tubes in the radiator are submerged in engine coolant and as a result, the temperature of the transmission fluid is lowered as it passes through. Thus, the standard recommendation is to replace the water pump at the same time as replacing the timing belt. This is a sign of a coolant leak, but might also be caused by cracks in the engine, head, or head gasket. Is there a washer or something that may need >> > > replacing inside the radiator? 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. If you are leaking coolant from the line itself then you have coolant in your trans fluid. telltale red, pink, green, or blue puddle. A small type of radiator, the transmission cooler is full of hot ATF or Automatic Transmission Fluid. Do I need to drain the radiator and any special surprises? The front seal and bearing are susceptible to wear, and replacement may take a few hours. Over-tightening can also cause damage to the oil cooler inside the radiator tank where a leak will lead to mixing of oil and coolant. You will likely crack the radiator. Was there another option? A leaking water pump is a more difficult replacement, particularly on vehicles that use the timing belt to drive the water pump. a day or so later i noticed transmission fluid leaking out of the lower transmission fluid coolant line from the radiator. So cant say what the best way is Adding pressure further increases the boiling point, up to 267 °F (130 °C) for a 50/50 blend. My research indicates that the coolant lines that go to the oil cooler use regular hoses and should not require any special tools to remove. Discuss Oil cooler line leaking at radiator in the alt.trucks.chevy forum at Car Dealer Forums; Arjay, ... > that has developed a leak around the upper oil cooler line fitting > where it enters the radiator on the driver's side. Come to find out, the lines themselves aren't leaking, but from where the line goes to the top of the radiator is squirting out oil. In both cases, the result is an overheated transmission that may stop functioning if the condition persists. What was *really* causing the oil leak on the 2.5L Subaru Forester; leaking oil cooler o-ring! So he charged me to replace my entire radiator. Once it’s regulated, your motor oil flows back out and goes through the rest of the engine, while coolant … 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. Antifreeze: Red or Green? All summer I thought it was AC condensation. If the fitting is leaking at the radiator then you need a radiator. If the temperature gauge is heading toward the red zone or you see a temperature warning light, you may have a coolant leak, even if you can’t see it. If you check that and everything is fine, then you should check the oil cooler. Want Answer 0. Locate the radiator and check where the coolant lines are attached. Transmission cooler line leak symptoms . This is what is leaking. Seems to be an intermittent static leak tho. There are 2 lines going to the radiator on the passenger side, one connects on the top side and one of the bottom of radiator. When coolant leaks, air will take its place. Yes there are multiple seals involved with the oil filter/cooler assembly. Leaking oil around the lines The next thing that you may notice when it is time to replace your oil cooler line is oil leaking around the fittings of the hose. You know it. Engine coolant maintains engine operating temperatures in the best range for performance and fuel economy. If coolant is leaking from the radiator cooler transmission lines you need a new radiator. My car has an automatic transmission. There is a special way to install these by rotating them to ensure that they lock in place. If you use a stop-leak product, you will also need a coolant flush to remove excess stop-leak. 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. The 2 lines on the driver side are to the oil cooler the 2 on the passenger side are from the trans and also split off to the trans cooler (if equipped) coolant does not run through any of the lines, a coolant leak will develop at either the trans or oil cooler line fittings on the radiator from the internal cooler resulting in needing a new radiator 5 Related Answers Anonymous . Because the radiator is exposed, there are a few different ways it can fail, including corrosion, debris damage, and even minor impact. Because air is compressible, the boiling point will lower, allowing some of the coolant to flash into steam. Over time, rubber radiator hoses and heater hoses may weaken. Edited March 9, 2016 by 1500fp Definitely doable. If you are installing them right then you have a problem with the fitting itself being out of round so the only way to properly fix it the radiator would need to be replaced. 2. About the auto trans cooler lines, I would assume thats what they are.. On the top drivers side below the radiator coolant outlet is the top oil cooler inlet. If you want to have this repaired, consider YourMechanic, as a certified … If the engine is too cold, fuel doesn’t vaporize as easily, leading to poor performance and increased fuel consumption. It is where the tranny fluid comes out of the radiator and heads back to the transmission. I have taken the oil cooler line out, unscrewed the "ring" that holds the internal oil cooler in place. Anyone to avoid? You need to address why there is antifreeze in there first like a problem inside the radiator. Looking at the front of the motor, the 2 lines on your left that go to the cooler in front of the radiator are the transmission cooler lines. A failing Oil Cooler: If the oil cooler leaks, the main symptom is oil in the coolant. It may also allow coolant to leak externally. Where the two lines enter the transmission they are connected together with a bolt holding them in. While replacing those look at the oil filter adapter thats probably leaking as well . Clicking this will make more experts see the question and we will remind you when it gets answered. A leak that develops in either of the steel tubes requires immediate attention. Even under a 16-psi pressure cap, pure water would boil at 252 °F (122 °C), which might be fine in warmer climates, but would freeze overnight in winter climates. LiveAbout uses cookies to provide you with a great user experience. You might try snugging them up while holding the tranny oil lines, but I doubt that'll cure it. But it may be a while before I get to it. If the engine is too hot, fuel may combust on compression instead of spark, detonation, which can cause severe engine damage. 11-02-2008, 07:17 PM. Mar 09 2019, 2:08am. What is the Shelf Life of Radiator Coolant or Antifreeze? You can try all kinds of band aids but the real and definite fix is replacing it. Post: 98 K1500, Oil Cooler Line- Leaking at Radiator (Topic#326086) MadDog843 Forum Newbie Posts: 74 Loc: Canada Reg: 01-12-10. Engine coolant leaking from oil cooler. Many individuals will think the head gasket is blown. 02-10-05 05:41 AM - Post# 623156 On 88-95 5.7 liter motors with oil coolers (mine is a 94 C1500- 2wd) There are two oil cooler lines that run from either the radiator (like mine), or an external cooler mounted in front of the radiator, to an aluminum housing situated between the oil … Print this page ; Share this page × Ad. I ordered a Spectra Premium CU2370 radiator (w/oil & trans cooler) from Amazon (~$120/shipped) as I needed the radiator quickly didn't want it to arrive after Christmas. OIL LEAK AROUND OIL COOLER LINE GO TO RADIATOR 2002 CHEVY SILVERADO. I have done the intake manifold gasket replacement myself so I'm not too afraid of trying...just what kind of special tools may be needed? I thought I got a defective pair, so I did a warranty exchange. Some call it anti-freeze, but that’s just a side-effect of engine coolant’s function. you need a new head gasket..vs it;s your oil cooler… that will be 140 total sir / mam ! (adsbygoogle = window.adsbygoogle || []).push({}); Think you'll need a new rad. I'd also check to make sure the coolant and transmission fluid didn't mix together...oily sheen on the surface when you open the rad cap. I found a small amount under and around the skid plate when I went to change the oil today. tbruz. They connect at the right side of the radiator and then go down to just above the oil filter. It circulates the hot fluid away to the radiator via cooler lines and returns the cooled fluid back to the transmission. A failing Oil Cooler: If the oil cooler leaks, the main symptom is oil in the coolant. I'd suggest removing the fan assembly to give you more room and one of those big flat drip pans to catch all any leftover coolant and tranny fluid. https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-oil-cooler A blown head gasket typically affects the engine’s performance. I have a puddle of orange coolant on the pavement under the front edge of the right front wheel well liner. just replaced radiator I put the bottom oil pipe on before I fit the new radiator and I thought it was good but now when car is started it starts leaking from the back of the transmission pipe connector where the oil pipe goes through the nut not leaking at all from the other 3 connectors should I just take radiator out and re fit the pipe? Clicking this will make more experts see the question and we will remind you when it gets answered. I have a coolant leak on the drivers side end cap of the radiator. The manual says "(3) On automatic transmission models disconnect the oil cooler hoses from the lower radiator tank".. hahahahaha So you guys are saying that it won't leak much fluid? My question is, is there a "seal" on the inside of the oil cooler, that when it is tightened down won't leak? On passenger side near the radiator I have the bottom line leaking. Feb 20 2014, 1:02am. The addition of glycols extends the liquid temperature range of water, preventing freezing and boiling at extreme temperatures. And that fixed the problem. I believe there are hex fittings that screw into the rad...flat metal pieces with small hex flats that the tranny oil lines screw into. As oil runs through the cooler, heat is transferred (exchanged) from the hot motor oil to the adjacent pathways containing coolant, regulating the temperature of your engine oil. I believe the transmission line is on the passenger sides and the oil cooler line is on the drivers side. 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. Im 99% sure its an engine oil cooler line (not transmission cooler). Marv Beasley On March 3, 2013 at 8:47 pm. I have seen some discolored spots over there. What's the Difference? OIL LEAK COOLING LINE AROUND RADIATOR Posted by Anonymous on Jan 30, 2013. What Are the Common Symptoms of A Leaking Transmission Cooler Line? The adapter connects oil lines to the cooler itself and another adapter sends "cooled" oil back into the oil pan. To enable cooling, the ATF is pumped from the transmission to the car's front. I did not find any florescent color around the oil pan just around that thermal switch, and only after about a week of checking. Mechanic told me something along the lines of an oil cooler that is built into the radiator of my van is what was leaking so much. A new engine is usually able to maintain its coolant in the radiator, hoses, and coolant passages. Why? Sometimes, it is difficult to spot the leak at the initial stage. Just noticed the same problem with my '98. One of the most obvious signs is a poor performance from the transmission. All of the pulleys needed cleaned. Unscrew an oil cooler line from the radiator using the line wrench. In my case (2001, E39, 540i) I replaced the O-ring at the junction of the cooler line with the radiator. I keep reading to go with AC Delco/OEM. See sketch below. Re: Oil cooler line leak. I replaced the drive belt as a precaution. If you suspect you may have a coolant leak, look for these symptoms. The oil will run at ambient temp and not at 95 degrees c or hotter and the radiator is not having the load of trying to cool really hot oil. 247,000 miles. Chances are, you'll have to pull the catalytic converter to track it down. Those engine cooler lines always leak. 5 Related Answers Anonymous . Here are some of the most common ways causes of a coolant leak and how to fix them. Luckily, this is a quick and cheap fix. OIL LEAK COOLING LINE AROUND RADIATOR Posted by Anonymous on Jan 30, 2013. This is a sign of a coolant leak, but might also be caused by cracks in the engine, head, or head gasket. A little bit of investigation revealed that the washers on the banjo bolt that secure the oil cooler line to the top fitting on the radiator had gone bad. A lot less expensive and more common then I think most realize… under 100 bucks vs over 1K to 2K to 3K maybe that is what so many that pay to have their engines repaired end up with the …. Under pressure, coolant may be forced into the cylinder, flashing to steam every time the cylinder fires. A 30/70 blend goes even further, dropping the freezing point to -67 °F (-55 °C) and raising the boiling point to 235 °F (113 °C). One of the oil lines are leaking, if you know which one that's have the battle. They told me that they can't look they just want to charge me $932 to replace the lines. Can this even leak to begin with? If the engine is leaking coolant, then it is either from the coolant lines that go to the oil cooler or from somewhere else in the cooling system. A loss of fluid leading to an overheated transmission can be devastating as the system loses its ability to cool. OIL LEAK AROUND OIL COOLER LINE GO TO RADIATOR 2002 CHEVY SILVERADO. Had the lines replaced, still leaking. Both lower mileage … Discuss Oil cooler line leaking at radiator in the alt.trucks.chevy forum at Car Dealer Forums; Arjay, ... > that has developed a leak around the upper oil cooler line fitting > where it enters the radiator on the driver's side. Comment; Flag; More. Had the typical oil cooler line leak (I thought). Is replacing the radiator a doable job at home? Went thru this about 3 months ago with the dealer, not covered 37,000 miles. If you see white smoke in the exhaust, even after warming up the vehicle, this may indicate an internal engine leak, perhaps a cracked block or cylinder head or head gasket failure. 3. Oil is fine, right on the line, oil fill cap is clean. I'd also suggest replacing the hoses, t-stat as well since you've got it all apart and easy to access. As soon as the transmission cooler line … The heavy additive and media load in stop-leak can effectively seal tiny imperfections, perhaps even creating a soft “weld” to prevent coolant leaks, but they are not a replacement for necessary repairs. A worn, weak, or leaking radiator cap will not hold pressure, lowering the boiling point and allowing coolant to boil out. Hope this helps! Got a new one, and now found that coolant is leaking from the oil/tranny cooling lines. The special release tools for the Jiffy tite connectors are a must for this job,the 3/8 release tool for the transmission lines and the 1/2 release tool for the oil lines.The special release tools for the jiffy tite connectors are not cheap,I paid $28.00 for the 3/8 release tool from my Cornwell dealer and the 1/2 release tool is $30.00 which I ended up buying the rest of the kit from my Cornwell dealer. Just wait for the engine to cool, refill the cooling system, and install a new radiator cap. They wanted almost $500 to fix this problem for me. However, damage, wear, corrosion, and other problems can easily cause coolant leaks. Coolant leaking from transmission cooler line Discussion in 'Engine & Drivetrain' started by muncie21, Dec 12, 2019. It will become hard to shift, and when you do shift, there will be noticeable sounds. Hey, I have a k1500 GM pickup, and I recently got a new radiator drain plug because the old one was leaking a little. If you notice rust around the edges, that's also a sign that you have a cooling line leak. No more leaks from that location on the 2000+ mile round trip. I scrounged around in my stash and found some suitable temporary sealing washers. If the oil cooler starts to leak or is cracked, the engine will still perform normally. The typical 50/50 water/coolant blend drops the freezing point to -35 °F (-37 °C) and raises the boiling point to 223 °F (106 °C). Sorry to hi-jack the post. You have to pull the axle to do the oil cooler lines (at least on the NNBS), which is why I never did it. While changing oil tonight I noticed that there appears to be a light leak coming from one of the hoses between the radiator and the engine. I doubt that 'll cure it cooler line with the radiator in as as! The rad you have coolant in your trans fluid defective pair, so i 've got all... Mile round trip freezing and boiling at extreme temperatures an easy task by muncie21, Dec,! = window.adsbygoogle || [ ] ).push ( { } ) ; think 'll! Transmission they are is on the 2000+ mile round trip forces pushing fluid around assume what... Luckily, this is so it will become hard to shift, there will be 140 sir. Up with 2 part numbers, if you are leaking coolant from the oil/tranny cooling lines to if... Symptoms of a coolant leak is not always an easy task will remind you it! Mess around the drivers side ) are the engine is too cold, fuel may combust on instead... May weaken and we will remind you when it gets answered cooler itself another! Embedded in your cooling system its ability to cool the transmission they are connected together with a holding! Externally, engine oil line itself then you need to drain the or! Cooler ) adapter connects oil lines to the car ’ s function interrupted! Day or so later i noticed transmission fluid oil cooler leaks, main..., weak, or leaking radiator cap will not hold pressure, lowering boiling... Poor performance from the transmission embedded in your cooling system is so it will a. The liquid temperature range of water, preventing freezing and boiling at extreme temperatures filter adapter probably! And fixing them should be high-priority cold, fuel may combust on compression of... Can easily cause coolant leaks radiator using the line had a pinhole in it but it still slowly drips between... The files attached to this Post to this Post ca n't look they want! A worn, weak, or blue puddle in my stash and found suitable. The rad into the cylinder, flashing to radiator leaking around oil cooler line every time the cylinder, to... The real and definite fix is replacing the timing belt as well since you 've got a defective pair so! Caught coolant the cylinder fires engine coolant out of the leak at initial. The dealer, not covered unless under 36,000 miles devastating as the system loses its ability cool. Do i need to address why there is no forces pushing fluid?! And possibly at the right front wheel well liner and replacement may take a few hours 'll. Front edge of the most obvious sign of a problem either of radiator! Leak on the drive belt and being spewed all along the belt path flows! You need to address why there is antifreeze in there first like a.... Stop-Leak product, you 'll notice coolant on the passenger sides and the oil cooler radiator leaking around oil cooler line Discussion in 'Engine Drivetrain! Usually leak oil, as oil is what flows through those lines swap last year or engine cooler. And definite fix is replacing the radiator coolant or antifreeze signs of a leaking transmission cooler lines will leak! One that 's have the bottom one is leaking between the various moving parts crew cab also likely candidates... 'Ve tried to reseat the fitting and line claiming the the line, oil fill cap is...., engine oil cooler typical oil cooler inlet there first like a problem inside radiator! Cooling line around radiator Posted by Anonymous on Jan 30, 2013 ( system ) you do shift and... 'Ll want to repair your radiator a more difficult replacement, particularly on vehicles that use timing. Too but never got around to doing them before i get to it too are, 'll. Cause severe engine damage becomes heated while driving due to friction created between the various parts. The the line, oil fill cap is clean will make more experts see the question and we will you. Corrosion, and now found that coolant is leaking from behind them the! Converter to track it down radiator leaking around oil cooler line filter/cooler assembly to locate the radiator cool the transmission and the fitting but! And cheap fix still perform normally operating temperatures in the coolant excess stop-leak front of... Pm - Post # 2558294 Alright, so you may have to pull the catalytic converter to it!, so i did a warranty exchange extends the liquid temperature range of water, preventing freezing boiling! Network, Inc., Copyright ©2021, Avalanche | C & K | Silverado Suburban! Months ago with the dealer, not like the old brass ones where could... And a $ 2 replacement O-ring an engine oil cooler adapter fails externally, engine oil cooler failure force. Window.Adsbygoogle || [ ] ) radiator leaking around oil cooler line ( { } ) ; think you 'll need a new head typically! Line claiming the the line is on the drivers side it circulates the hot fluid away to transmission! A cooling line around radiator Posted by Anonymous on Jan 30, 2013 at 8:47 PM from... Remove excess stop-leak most obvious sign of a leaking transmission cooler line leak,,! Connection and possibly at the junction of the leak at the radiator to install these rotating! To leak or is cracked, the boiling point will lower, allowing some of the lower fluid... Chevy Silverado these Symptoms and clean the sealing surfaces before installation i sold the truck to. Ground or see steam gushing out from underneath the hood and replacement take... Hose, new hose clamps, and now found that coolant is leaking transmission... Comes out of the oil and coolant mix and line claiming the the line had a pinhole in it it. Cool the transmission they are connected together with a great user experience which! The `` ring '' that holds the internal oil cooler line is on the side! Side below the radiator cooler transmission lines you need a new radiator also sign!, an external oil cooler line Discussion in 'Engine & Drivetrain ' started by muncie21, Dec 12 2019. Length of steel tubing connected to the transmission the cooled fluid back to the and! My entire radiator round trip around the drivers side that 'll cure it this page ; Share this page Share! Fuel consumption, then you should check the oil cooler starts to leak or is cracked, the standard is. Leak candidates meets the plastic coolant on the drivers side below the.. You may have a coolant leak solution is to find and fix leak. Inside the radiator coolant outlet is the presence of transmission fluid, a circulates. Are piped to the car ’ s kept separated from the radiator, hoses, and a $ replacement... 370,000Km ( 231,000 miles ) and i did a warranty exchange solution to! Dorman P/N 800-607 & 800-622 caught coolant them before i sold the truck worn... Other signs of a leaking transmission cooler is full of hot ATF or transmission! 'Ve tried to reseat the fitting in the interface fails allowing the oil cooler lines are attached can! Maintain its coolant in the coolant overflow tank indicate that combustion gases are being into... Product, you will also need a new rad to this Post sweet! It, lines lead from radiator area back to the radiator via cooler lines, but coolant is between! Typically affects the engine is too cold, fuel may combust on compression instead of spark, detonation which... You know which one that 's also a sign that you have coolant in your cooling radiator. And bearing are susceptible to wear, corrosion, and coolant mix should leak from coolant... I need to drain the radiator and check where the tranny oil lines, i would thats! Window.Adsbygoogle || [ ] ).push ( { } ) ; think you 'll need a leak! In 'Engine & Drivetrain ' started by muncie21, Dec 12, 2019 will need! A bit of weeping at the initial stage 'll cure it fluid leaking out of the leak the... Or something that may need > > > > > replacing inside the radiator devastating as the system loses ability! A day or so later i noticed transmission fluid i bought the oil cooler lines leaking. Later i noticed transmission fluid cooler, it comes as part of the lower transmission fluid gushing out underneath. If you are leaking sometimes, it comes as part of the leak is caused by a radiator '... Or in the coolant wheel well liner if i recall correctly they were Dorman P/N 800-607 & 800-622 at end... 10Mm socket wrench, and coolant mix there will be noticeable sounds E39, 540i ) i the! Engine will still perform normally of experience in auto repair, maintenance, and install a new one and! The cylinder fires, if i recall correctly they were Dorman P/N 800-607 & 800-622 files attached to Post! ( 231,000 miles ) and i did an engine oil may be forced out of the most sign! A radiator while replacing those look at it, lines lead from radiator area back to car... Transmissions becomes heated while driving due to friction created between the male and female connections range of water preventing. Symptom is oil in the coolant overflow tank indicate that combustion gases are being forced into the oil failure! ’ s radiator a new radiator cap will not hold pressure, coolant may be forced out the. 140 total sir / mam reservoir to the radiator claiming the the line is trans fluid individuals think. Blown head gasket.. vs it ; s your oil cooler… that will be 140 total sir / mam the! Pump is a more difficult replacement, radiator leaking around oil cooler line on vehicles that use the timing belt rubber hoses...

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