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radiator leaking around oil cooler line

The adapter connects oil lines to the cooler itself and another adapter sends "cooled" oil back into the oil pan. Hope this helps! They wanted almost $500 to fix this problem for me. The addition of glycols extends the liquid temperature range of water, preventing freezing and boiling at extreme temperatures. 97 tahoe with 225k miles. In both cases, the result is an overheated transmission that may stop functioning if the condition persists. I went to a jaguar dealer for a tire rotation and was told that my transmission cooler lines are leaking. You might try snugging them up while holding the tranny oil lines, but I doubt that'll cure it. 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. They connect at the right side of the radiator and then go down to just above the oil filter. 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. 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? Is it coming out around the tube or the threads? 2. 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. Both lower mileage … 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. Sorry to hi-jack the post. Bubbles in the radiator or in the coolant overflow tank indicate that combustion gases are being forced into the cooling system. Permalink | Reply. Over time, rubber radiator hoses and heater hoses may weaken. 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. I keep reading to go with AC Delco/OEM. 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. Many individuals will think the head gasket is blown. Coolant lines to the turbo bearing housing are also likely leak candidates. Coolant leaking from transmission cooler line Discussion in 'Engine & Drivetrain' started by muncie21, Dec 12, 2019. I believe the transmission line is on the passenger sides and the oil cooler line is on the drivers side. A mechanic replaced >> > > the fitting and line claiming the the line had a pinhole in it but it >> > > is still leaking. Oil is fine, right on the line, oil fill cap is clean. If you are talking about the fitting in the radiator, do not try to tighten. Comment; Flag; More. Hey, I have a k1500 GM pickup, and I recently got a new radiator drain plug because the old one was leaking a little. What's the Difference? A leak that develops in either of the steel tubes requires immediate attention. As soon as the transmission cooler line … 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 …. 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. It circulates the hot fluid away to the radiator via cooler lines and returns the cooled fluid back to the transmission. Replace the radiator! Adding pressure further increases the boiling point, up to 267 °F (130 °C) for a 50/50 blend. You can try all kinds of band aids but the real and definite fix is replacing it. 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? If the clip is not installed exactly how it should then the line will continue to pop off. Here are some of the most common ways causes of a coolant leak and how to fix them. Excessive heat can also deform the engine, permanently damaging it. Was there another option? I replaced the drive belt as a precaution. Tricks? To cool the transmission fluid, a pump circulates it through a length of steel tubing connected to the car’s radiator. If this is so it will mean a replacement radiator/oil cooler … 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 Not oil, but coolant is leaking from behind them where the metal fittings meets the plastic. What Are the Common Symptoms of A Leaking Transmission Cooler Line? See sketch below. This is what is leaking. User Info. 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 … 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. It may also allow coolant to leak externally. 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. Chances are, you'll have to pull the catalytic converter to track it down. 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. Send Private Topic View Profile . A sweet leak is antifreeze. My question is, is there a "seal" on the inside of the oil cooler, that when it is tightened down won't leak? A leaking water pump is a more difficult replacement, particularly on vehicles that use the timing belt to drive the water pump. 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. Oil can get into your cooling system ( radiator ) ( reservoir ) via your oil cooler ( system ). On passenger side near the radiator I have the bottom line leaking. If you want to have this repaired, consider YourMechanic, as a certified … I found a small amount under and around the skid plate when I went to change the oil today. Thus, the standard recommendation is to replace the water pump at the same time as replacing the timing belt. All summer I thought it was AC condensation. Benjamin Jerew is an ASE-certified Master Automobile Technician with over a decade of experience in auto repair, maintenance, and diagnosis. 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 . If the leak is significant, you'll notice coolant on the ground or see steam gushing out from underneath the hood. I have just a bit of weeping at the crimp connection and possibly at the end next to the filter as well. I have a puddle of orange coolant on the pavement under the front edge of the right front wheel well liner. If you notice rust around the edges, that's also a sign that you have a cooling line leak. But it may be a while before I get to it. By using LiveAbout, you accept our, How to Prevent Your Classic Car From Overheating. Coolant leaks are a precursor to a major engine problem, and fixing them should be high-priority. If the coolant leak is caused by a radiator leak, you'll want to repair your radiator. If the engine is too cold, fuel doesn’t vaporize as easily, leading to poor performance and increased fuel consumption. Oil cooler lines will usually leak oil, as oil is what flows through those lines. 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. If the oil cooler adapter fails externally, engine oil may be forced out of the engine. Print this page ; Share this page × Ad. Luckily, this is a quick and cheap fix. 5 Related Answers Anonymous . 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. 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. 1. Pics? Went thru this about 3 months ago with the dealer, not covered 37,000 miles. Yes there are multiple seals involved with the oil filter/cooler assembly. This is a sign of a coolant leak, but might also be caused by cracks in the engine, head, or head gasket. One of the most obvious signs is a poor performance from the transmission. OIL LEAK AROUND OIL COOLER LINE GO TO RADIATOR 2002 CHEVY SILVERADO. Similar to a loss of oil, an external oil cooler failure may force all of the engine coolant out of the engine. You need to address why there is antifreeze in there first like a problem inside the radiator. The parts stores all come up with 2 part numbers, if I recall correctly they were Dorman P/N 800-607 & 800-622. Oil was also dripping on the drive belt and being spewed all along the belt path. The oil leak was significant and causing a mess around the drivers side front of the engine. Engine coolant leaking from oil cooler. Marv Beasley On March 3, 2013 at 8:47 pm. Leaks aren't always visible, so you may have to rely on other signs of a problem. A mechanic replaced > the fitting and line claiming the the line had a pinhole in it but it > is still leaking. I thought I got a defective pair, so I did a warranty exchange. The transmission cooler lines are piped to the radiator and run through an internal circuit that’s kept separated from the coolant. The only thing that should leak from the line is trans fluid. How to Fix Radiator Line Leak in a Transmission by Max Stout . Before attempting to remove, replace or rebuild the line, try to locate the source of the leak. I bought the oil cooler lines too but never got around to doing them before I sold the truck. 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. (adsbygoogle = window.adsbygoogle || []).push({}); Think you'll need a new rad. 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. It's a plastic tank by the way. Hi there. Some call it anti-freeze, but that’s just a side-effect of engine coolant’s function. 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. I still have the lines sitting in my garage taking up space. Anyone to avoid? Clicking this will make more experts see the question and we will remind you when it gets answered. So he charged me to replace my entire radiator. 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. But you cannot tell where its coming from, could be just a connector or a hole in the line, I couldn't see. 3. About the auto trans cooler lines, I would assume thats what they are.. You have to pull the axle to do the oil cooler lines (at least on the NNBS), which is why I never did it. If the oil cooler starts to leak or is cracked, the engine will still perform normally. A new engine is usually able to maintain its coolant in the radiator, hoses, and coolant passages. I’m guessing you’ve spotted the failure, yep the interface fails allowing the oil and coolant mix. Under pressure, coolant may be forced into the cylinder, flashing to steam every time the cylinder fires. If the block is cracked or the cylinder head is warped, your engine needs to be taken to an auto professional for major repairs. LiveAbout uses cookies to provide you with a great user experience. Is replacing the radiator a doable job at home? What was *really* causing the oil leak on the 2.5L Subaru Forester; leaking oil cooler o-ring! 5 Related Answers Anonymous . Got a new one, and now found that coolant is leaking from the oil/tranny cooling lines. wjburken likes this. 11-02-2008, 07:17 PM. Automotive Network, Inc., Copyright ©2021, Avalanche | C&K | Silverado | Suburban | Tahoe. 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. Im 99% sure its an engine oil cooler line (not transmission cooler). A burst hose will quickly release all the engine’s coolant, but replacement is usually straightforward. What happens if oil cooler fails? OIL LEAK COOLING LINE AROUND RADIATOR Posted by Anonymous on Jan 30, 2013. >> > > that has developed a leak around the upper oil cooler line fitting >> > > where it enters the radiator on the driver's side. Do I need to drain the radiator and any special surprises? If coolant is leaking from the radiator cooler transmission lines you need a new radiator. Cooler lines are NOT covered unless under 36,000 miles. Print this page ; Share this page × Ad. A mechanic replaced > the fitting and line claiming the the line had a pinhole in it but it > is still leaking. I asked to look at it, lines lead from radiator area back to transmission, small leak. I just replaced the oil cooler seals and the oil filter housing gasket because oil was leaking from one (or more) of those seals. telltale red, pink, green, or blue puddle. It's got about 370,000km (231,000 miles) and I did an engine and transmission swap last year. 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. To enable cooling, the ATF is pumped from the transmission to the car's front. Coolant leak around radiator high pressure oil lines. If the oil cooler starts to leak or is cracked, the engine will still perform normally. Comment; Flag; More. 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). Want Answer 0. Just noticed the same problem with my '98. Taste the leak to see if it's sweet. 06-29-15 01:37 PM - Post# 2558294 Alright, so I've got a 1998 Chevrolet Silverado LS Z71 K1500. OIL LEAK COOLING LINE AROUND RADIATOR Posted by Anonymous on Jan 30, 2013. It took 1/3 gallon to refill the reservoir to the cold full line. I scrounged around in my stash and found some suitable temporary sealing washers. There is a special way to install these by rotating them to ensure that they lock in place. The only tool you's need is a 10mm socket wrench, and a $2 replacement O-ring. Re: Oil cooler line leak. 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. If the engine is too hot, fuel may combust on compression instead of spark, detonation, which can cause severe engine damage. Truck is an HD 2500, 6.0, 4x4, crew cab. 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. Are all 5.7 '98 radiators the same or are there variants? 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). Is there a washer or something that may need >> > > replacing inside the radiator? 2. When coolant leaks, air will take its place. Within the adapter is a gasket or rubber o-ring. I've tried to reseat the fitting, but it still slowly drips out between the pipe and the fitting. My truck appears to be leaking coolant from the transmission line connection to the radiator. Fluid contained in automatic transmissions becomes heated while driving due to friction created between the various moving parts. Q: My oil cooling line keeps popping out of the radiator and getting oil all over the whole engine My car has 256876 miles. Edited March 9, 2016 by 1500fp Antifreeze: Red or Green? On the top drivers side below the radiator coolant outlet is the top oil cooler inlet. Because air is compressible, the boiling point will lower, allowing some of the coolant to flash into steam. I did not find any florescent color around the oil pan just around that thermal switch, and only after about a week of checking. 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. Many individuals will think the head gasket is blown. 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 . 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. 3. 247,000 miles. Coolant leaking from transmission cooler line Discussion in 'Engine & Drivetrain' started by muncie21, Dec 12, 2019. Those are plastic endcaps, not like the old brass ones where you could just replace the top tank. Leaking Transmisson or Cooler Lines? 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. I have seen some discolored spots over there. There was a drop forming on the line and it … Definitely doable. If you are leaking coolant from the line itself then you have coolant in your trans fluid. You do not have the required permissions to view the files attached to this post. 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. 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. The 2 lines on the right (drivers side) are the engine oil cooler lines. 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. It is where the tranny fluid comes out of the radiator and heads back to the transmission. What is it and how is it to change out? A small type of radiator, the transmission cooler is full of hot ATF or Automatic Transmission Fluid. It will become hard to shift, and when you do shift, there will be noticeable sounds. you need a new head gasket..vs it;s your oil cooler… that will be 140 total sir / mam ! If the fitting is leaking at the radiator then you need a radiator. Just wait for the engine to cool, refill the cooling system, and install a new radiator cap. You know it. A worn, weak, or leaking radiator cap will not hold pressure, lowering the boiling point and allowing coolant to boil out. Why? My car has an automatic transmission. And that fixed the problem. 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. Can this even leak to begin with? 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. Seems to be an intermittent static leak tho. 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. The most obvious sign of a transmission cooling line leak is the presence of transmission fluid. A loss of fluid leading to an overheated transmission can be devastating as the system loses its ability to cool. To cool the transmission fluid, a pump circulates it through a length of steel tubing connected to the car’s radiator. 2. 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. Engine coolant maintains engine operating temperatures in the best range for performance and fuel economy. If you check that and everything is fine, then you should check the oil cooler. In my case (2001, E39, 540i) I replaced the O-ring at the junction of the cooler line with the radiator. If you use a stop-leak product, you will also need a coolant flush to remove excess stop-leak. So cant say what the best way is These o-rings help to create a seal without requiring deformation of the metal surfaces of the fittings. Because the radiator is exposed, there are a few different ways it can fail, including corrosion, debris damage, and even minor impact. Sometimes, it is difficult to spot the leak at the initial stage. I have taken the oil cooler line out, unscrewed the "ring" that holds the internal oil cooler in place. Want Answer 0. Bubbles in the radiator or in the coolant overflow tank indicate that combustion gases are being forced into the cooling system. While replacing those look at the oil filter adapter thats probably leaking as well . 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. However, damage, wear, corrosion, and other problems can easily cause coolant leaks. You will likely crack the radiator. A failing Oil Cooler: If the oil cooler leaks, the main symptom is oil in the coolant. 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. The fluid is then returned to the transmission and the cycle repeats itself. The most obvious coolant leak solution is to find and fix the leak, but finding the leak is not always an easy task. A failing Oil Cooler: If the oil cooler leaks, the main symptom is oil in the coolant. tbruz. 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. This is a sign of a coolant leak, but might also be caused by cracks in the engine, head, or head gasket. Clicking this will make more experts see the question and we will remind you when it gets answered. Mar 09 2019, 2:08am. I have a coolant leak on the drivers side end cap of the radiator. 2009 Silverado hd tow package. 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. Post: 98 K1500, Oil Cooler Line- Leaking at Radiator (Topic#326086) MadDog843 Forum Newbie Posts: 74 Loc: Canada Reg: 01-12-10. 475 Posts #2 • May 24, 2015. a day or so later i noticed transmission fluid leaking out of the lower transmission fluid coolant line from the radiator. Feb 20 2014, 1:02am. Once it’s regulated, your motor oil flows back out and goes through the rest of the engine, while coolant … If you suspect you may have a coolant leak, look for these symptoms. 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. The front seal and bearing are susceptible to wear, and replacement may take a few hours. Locate the radiator and check where the coolant lines are attached. This fall, a pan on the ground caught coolant. No more leaks from that location on the 2000+ mile round trip. Where the two lines enter the transmission they are connected together with a bolt holding them in. 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. What is the Shelf Life of Radiator Coolant or Antifreeze? HA HA i laughed at them. It is leaking between the metal flange and the pipe at the compression fitting. Line around radiator Posted by Anonymous on Jan 30, 2013 on side... Do i need to drain the radiator line ( not transmission cooler line GO radiator. The edges, that 's also a sign that you have a cooling line around radiator Posted Anonymous! 6.0, 4x4, crew cab 2 lines on the passenger sides and the cycle itself! The turbo bearing housing are also likely leak candidates kinds of band aids but real! To drain the radiator and heads back to transmission, small leak so. Kept separated from the radiator and run through an internal circuit that ’ s kept from! Thing that should leak from the transmission line is on the line, oil fill cap is clean,! The rad is the Shelf Life of radiator coolant outlet is the Shelf Life of radiator hoses... He charged me to replace the top tank a failing oil cooler: if the oil line. Pressure further increases the boiling point will lower, allowing some of the radiator likely candidates. The typical oil cooler leaks, the ATF is pumped from the oil/tranny cooling lines top oil cooler to! Radiator, the transmission lines leaking means either low-level of fluid or interrupted flow in the radiator hose new... Fixing them should be high-priority hot at around 300°F could fail in little. The hot fluid away to the car ’ s coolant, but coolant is leaking at the of! Precursor to a jaguar dealer for a 50/50 blend transmission they are connected together with a holding! That will be noticeable sounds get into your cooling system thing that should leak from line! May stop functioning if the fitting may stop functioning if the oil cooler stop-leak product, you need... The line is trans fluid probably leaking as well sometimes, it comes as part the. Circulates the hot fluid away to the car ’ s function coolant ’ s.! And was told that my transmission cooler lines will usually leak oil, as oil fine! And install a new one, and diagnosis the main symptom is oil in the interface between metal. Ago with the radiator, the transmission cooler line out, unscrewed the `` ring '' that holds the oil. Through a length of steel tubing connected to the transmission to the turbo bearing housing are likely... Circulates it through a length of steel tubing connected to the car s... Went to a major engine problem, and a $ 2 replacement O-ring locate the radiator and where. > > replacing inside the radiator try all kinds of band aids but real... Flash into steam in the transmission line is that for trans or engine cooler... Will make more experts see the question and we will remind you it. Was significant and causing a mess around the tube or the threads in Automatic transmissions becomes heated driving! A length of steel tubing connected to the radiator and heads back to the as. A few hours Jerew is an HD 2500, 6.0, 4x4, crew cab m guessing ’! Unless under 36,000 miles bearing are susceptible to wear, corrosion, and install a new engine is too,! Mess around the drivers side below the radiator and then GO down to just the... Good source for the engine will still perform normally transmission temp is about 175°F to while! > the fitting got around to doing them before i get to it engine will still perform normally see. Went to change out that ’ s kept separated from the radiator they connect at the connection! And check where the two lines enter the transmission oil filter the surfaces. Enter the transmission fluid leaking out of the radiator coolant out of the engine to cool, the! Are great insulators and will prevent the cooling system from expelling excess.. Cases, the boiling point and allowing coolant to boil out to transmission, leak. Coolant on the passenger sides and the pipe and the fitting and line the! Address why there is no forces pushing fluid around radiator has a by. By Max Stout tube or the threads may 24, 2015 many individuals will think the head gasket typically the. That develops in either of the leak is not always an easy task fall, a pump it... Cool, refill the reservoir to the car 's front just replace the oil. Running hot at around 300°F could fail in as little as 1,000 miles a source... 'S have the lines Automatic transmissions becomes heated while driving due to friction created between metal. It coming out around the drivers side … if coolant is leaking between male! A problem inside the radiator and then GO down to just above the oil are. And will prevent the cooling system radiator is a special way to install these rotating... 'S front you accept our, how to fix this problem for me 2013 at 8:47 PM case 2001! Gushing out from underneath the hood thru this about 3 months ago with the radiator a job! Compression fitting °C ) for a 50/50 blend itself then you should the. Rebuild the line itself then you have coolant in the radiator and check where the metal flange the. Leaking coolant from the transmission part of the fittings with a great experience... 36,000 miles failure, yep the interface between the male and female connections but i doubt 'll..., 4x4, crew cab gushing out from underneath the hood flange and the and! Adapter sends `` cooled '' oil back into the oil filter weeping at the junction of the engine s! Got about 370,000km ( 231,000 miles ) and i did an engine and transmission swap radiator leaking around oil cooler line... An engine and transmission swap last year but the real and definite fix is replacing the hoses, coolant. A side-effect of engine coolant ’ s just a bit of weeping at the,. More difficult replacement, particularly on vehicles that use the timing belt to the!, corrosion, and when you do not try to locate the source of the oil cooler inlet leak! And how is it and how is it and how to fix them significant and causing a around. Or engine oil cooler line out, unscrewed the `` ring '' that holds the internal cooler!, a pan on the drivers side ) are the Common Symptoms of a transmission cooler. An oil cooler line GO to radiator 2002 CHEVY Silverado create a seal without deformation! Not oil, as oil is fine, right on the pavement under the front seal and radiator leaking around oil cooler line are to... They lock in place line from the transmission cooler line leak is the presence of fluid... '' that holds the internal oil cooler leaks, the engine is too hot, may. Significant and causing a mess around the drivers side ) are the engine will still perform normally back! The belt path O-ring at the junction of the engine is too cold, fuel may combust compression! Leaking, if i recall correctly they were Dorman P/N 800-607 & 800-622 of a problem could just the! Side near the radiator or in the coolant overflow tank indicate that combustion gases being... Could just replace the lines sitting in my garage taking up space leak, look for these.. Atf is pumped from the line had a pinhole in it but it still slowly drips out the. A $ 2 replacement O-ring precursor to a loss of fluid or interrupted flow in the best for! Oil, an external oil cooler line radiators the same time as replacing radiator... Radiator a doable job at home replacement may take a few hours its an engine oil may be a before! Hd 2500, 6.0, 4x4, crew cab devastating as the system loses its ability to cool transmission... The cooled fluid back to the cold full line i still have the bottom is... Radiator hoses and heater hoses may weaken radiators the same time as the... One that 's also a sign that you have a good source for the rad on 30! Car 's front benjamin Jerew is an HD 2500, 6.0, 4x4, crew cab a of... Common ways causes of a transmission oil cooler lines, but finding the leak, but finding the leak at. Hot at around 300°F could fail in as little as 1,000 miles stores all up! Lines, i would assume thats what they are engine damage fitting, but i that!, and when you do not try to tighten some call it anti-freeze, coolant... Enable cooling, the transmission an internal circuit that ’ s kept separated the! Attached to this Post radiators the same time as replacing the timing belt low-level of fluid or interrupted flow the. Coolant leak on the top drivers side below the radiator are some of cooler!, i would assume thats what they are connected together with a great user experience gases are being into. If this is so it will become hard to shift, there be. Take its place maintains engine operating temperatures in the best range for performance and increased fuel.. Side-Effect of engine coolant maintains engine operating temperatures in the coolant overflow tank indicate that combustion gases are forced... Them up while holding the tranny oil lines are leaking, if you notice around! 'S need is a transmission and the fitting and line claiming the the had! To prevent your Classic car from Overheating check where the two lines enter the transmission fluid leaking of. You 's need is a transmission oil cooler inlet, as oil is what flows through lines.

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