It is developing a small leak next to the upper transmission cooler line (around the hexagonal fitting). I'm guessing this would be a dealer only replacement item. This car has 65,000 miles on it and has developed a major leak at the bottom of the radiator. what is the torque specs for the two fittings that the line clip into? For a better experience, please enable JavaScript in your browser before proceeding. The transmission fluid cooler is installed in almost all cars that have an automatic transmission whenever it is a sedan, SUV, or a full-sized truck.. 2006 chevy cobalt transmission cooling lines leak at the radiator after replacing the radiator. Hi there. The only tool you's need is a 10mm socket wrench, and a … The ATF cooler is inside the bottom tank of the radiator and the lines go in and out on the engine side of the radiator. My truck appears to be leaking coolant from the transmission line connection to the radiator. You are using an out of date browser. Step 2 - Line leaks. Our members have made this the greatest Pontiac community online! If your transmission coolant lines are leaking at the radiator, then there are a few ways to fix it. It is easy to replace that line? After getting everything back together and refilled with fluids, with the engine running transmission fluid began leaking from the transmission cooler line at the lower connection on the radiator. Step 1 Transmission Cooling Line Leak at bottom of radiator...Help... (2000 Pontiac Grand Am) This car has 65,000 miles on it and has developed a major leak at the bottom of the radiator. I had not traced the lines back to their origins yet, but plan on doing so, if I get time, I may. If the lines are old, then you might need to replace the whole line. If you did damage the hose, you can get a new section of transmission hose and just replace it and use the type hose clamps I mentioned before. A leak that develops in either of the steel tubes requires immediate attention. 2004 Impala with 3400 motor Noticed fluid drip beginning last week after parking car - narrowed down it is ATF coming from lower part of radiator.. to see if it were coming from the Transmission Cooling Line Fittings, i tied a shop towel around each fitting during a ride. How to fix Transmission Line Leak at radiator. The transmission fluid leak occurs on the metal tubing next to the battery but travels down the protective sleeve and shows up at the passenger side of the oil cooler connection. It is developing a small leak next to the upper transmission cooler line (around the hexagonal fitting). This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Not a lot and not enough to drip on the garage floor; but their is residuals around the end. Thanks so much for the help!! what is the torque specs for the two fittings that the line clip into? Q: My oil cooling line keeps popping out of the radiator and getting oil all over the whole engine My car has 256876 miles. they just clip in. I had ran over some debris in the road that caused all my transmission fluid to leak out. I believe its tranny fluid, and its may be coming from one of the lines that go to the transmission cooler. If it were me id rig up a separate external cooler that can cool more, as well as not harm the transmission if a leak develops (like getting coolant in your trans). It is the steel and rubber line that ties the radiator to the transmission. There is two lines and one of which, the clamp end seems to be leaking. this link may shed some ight on the process. there is supply and return line from the transmission to the transmission cooler, which is part of your radiator-either these lines were not installed or are leaking badly, regardless whoever did the radiator probably needs to correct the issue since they had to remove and reinstall these lines. That is either your oil cooler or your trans cooler connection to the radiator. Your transmission cooler, that's located up in the radiator has sprung a leak. are there any oyher things that need to be done when pushing the lines into those fittings? Today the check engine light and the slip indicator lit up on my way to work. Looking for an alternative. If it were me id rig up a separate external cooler that can cool more, as well as not harm the transmission if a leak develops (like getting coolant in your trans). Hello, My 2005 Expedition, with nearly 200K miles, has sprung a seep. Thank you. My car has an automatic transmission. Trans lines leaking at radiator. Please consider whitelisting my site in your ad blocker. If your snap fitting is leaking before the installation of the transmission cooler, you should be able to fix it easily while performing the cooler installation. Anyways, its got to be thread related. So, I am going to have them replaced soon and was wondering if aftermarket ones are OK or even preferential to AC-Delco OEM. https://www.cashcarsbuyer.com/transmission-cooling-lines-leaking You can support our mission by becoming a Sustaining Member. If you simply notice that a line is leaking, that can be a simple fix depending on the location of the leak and line … But there is a 1/2 filter going from one of the main transmission lines to that smaller cooler sandwiched between the radiator and intercooler. Before installing the radiator I carefully connected the transmission cooler lines and tightened them snugly using a 13mm flare-nut wrench. I have a 1990 Acura Integra 1.8L B18A1 engine with an automatic transmission. I let it warm up and saw coolant leaking from this fitting. When in good condition, transmission fluid is a very bright red, so it is very easy to notice on most surfaces. But there is a 1/2 filter going from one of the main transmission lines to that smaller cooler sandwiched between the radiator and intercooler. I found a small amount under and around the skid plate when I went to change the oil today. 2003 XS with 4EAT ~130,000 miles -- the stock transmission cooling lines are slowly leaking, from what I can determine at the point under the battery where the metal lines meet the formed hoses going to the radiator cooler. 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. The AT is hooked up, at one point, to the radiator for "cooling purposes." Transmission Cooler Line Leak Help. The other 3 lines came off easily. You never do say if you are leaking coolant from the connection or oil/trans fluid. 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. So I was told it is probably the cooling lines. If it's leaking from the joint (as opposed to the flange itself on the radiator before the actual joint) it is either, (1) it's not tight enough (2) you accidentially cross-threaded it during installation,(3) the male part was defective/damaged on your new radiator, or (4) your transmission line has gone bad. The fluid takes the transmission heat to the cooler, disposes of the excess heat, and then return to the transmission. Discussion Starter • #1 • Jan 22, 2017. The cooler lines do two tasks: Carrying the transmission fluid to and from the transmission. I went to a jaguar dealer for a tire rotation and was told that my transmission cooler lines are leaking. I am going to be replacing my radiator shortly (97sc2). The fluid is then returned to the transmission and the cycle repeats itself. Line Leaks Gasket Leaks Seal Leaks Overflow Sensors/Plugs Cracked Casing. I just need a little help. If it's leaking from the joint (as opposed to the flange itself on the radiator before the actual joint) it is either, (1) it's not tight enough (2) you accidentially cross-threaded it during installation,(3) the male part was defective/damaged on your new radiator, or (4) your transmission line has gone bad. If you're not already a member, please take a moment to sign up! It may not display this or other websites correctly. It is leaking at th joint of the line and the radiator for sure and I can not tighten the nut any tighter. My lines are also leaking, looks to be where the steel line attaches to the rubber part of it. I'll get some better pics tomorrow. if its leaking from the hose, replace … The steel is completely rusted and flaking away while the rubber looks new. The other 3 lines came off easily. Any info on this situation would be helpful!!! There appears to be a transmission fluid leak at the steel line coming from the transmission to the top of the radiator. Had it towed to my dads and prepared to do a drain and fill figuring it was low on transmission fluid. Anyone has the issue of their transmission coolant line at the connection end leaking? I am going to be replacing my radiator shortly (97sc2). Transmission cooler lines leaking at the radiator puts car owners in a distressing situation. Unhook the thing right away because that stuff will ruin your transmission. It's a basic single-flared metal line/compression fitting set-up. Anyways, its got to be thread related. 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. There is two lines and one of which, the clamp end seems to be leaking. The brass fitting came out of the radiator still mated with its brass fitting seat component . Just look for a discount code on google or so to get some $$ off. One of the most obvious transmission cooler failure or blown transmission line symptoms is a leak. For as little as $1.67 per month, you can help us to keep helping you. If you manage to pinpoint the leak, move onto that step for further diagnosis. Removed stereo car won't engage starter security issue? Line leaks will generally only happen when the transmission is pressurized because when you turn off the motor all the transmission fluid drains back into the pan. It's a basic single-flared metal line/compression fitting set-up. If it's oil or trans fluid leaking, try tightening the connection. how to install transmission cooler lines; Beginner In Brazilian Jiu Jitsu Should Focus On Q: Lines keep leaking at connections no matter how many times I try. In most cases, the radiator cools the automatic transmission fluid. These lines are currently leaking AT fluid, and I can't fix them without buying yet another radiator. If so, is this an easy fix (just remove http://www.answers.com/Q/How_do_you_change_transmission_cooler_lines_on_a_2003_grand_prix. 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. Before attempting to remove, replace or rebuild the line, try to locate the source of the leak. Replaced the radiator and now the transmission cooling lines leak where they go into the transmission. Rockauto.com has it for $ 110.79 (for the 4.0). 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 After getting everything back together and refilled with fluids, with the engine running transmission fluid began leaking from the transmission cooler line at the lower connection on the radiator. Check out the Kia Stinger or Kia Telluride. Your transmission cooler, that's located up in the radiator has sprung a leak. Want something new and sporty but can't buy that at Pontiac anymore? Transmission fluid leak on cars with the KD1 remote transmission oil cooler option. I've had a leak going for a while on the transmission cooler line and have been putting off fixing it. What I found was that it has been leaking from the coolant lines. The best thing for you to do now is to buy a service manual and review the exact steps for replacing the transmission cooling lines before making any other guesses or repairs. I just bridge across the two transmission lines with a piece of clean fuel line to do that. I'm not asking for much. The suction line (cold line) of the AC drips on these tubes. The problem you will have with cutting off the old crimps & hooking to the metal lines is that without barbs or at least a flare on the end of the metal line you are very likely to end up with one of the new rubber lines blowing off from the pressure. Your car can run without that cooler. Pics of : Transmission Cooler Lines Leaking At Radiator It is leaking from above (what a mess). I dont trust radiators with tranny coolers in them at all, especially if its not OEM. ... or they are not going to leak. I have a 2004 Jaguar XJ8, 55,000 miles. It circulates the hot fluid away to the radiator via cooler lines and returns the cooled fluid back to the transmission. Is there a washer or something that may need replacing inside the radiator? This car has 65,000 miles on it and has developed a major leak at the bottom of the radiator. I'll get some better pics tomorrow. 2006 chevy cobalt transmission cooling lines leak at the radiator after replacing the radiator. Re: Trans cooler line leak Dec 27 2011, 1:39pm Today the check engine light and the slip indicator lit up on my way to work. The job is completed. After much torquing, the line linked and the hex nut was then immediately locked on .I cut the aluminum/ steel transmission cooler line , removed the radiator and was then able to forcibly back off the connection. Just hope I can reach and get to everything. ... Looks like you would need to replace the entire lines from the cooler back to the transmission. Coolant leaking from transmission cooler line Discussion in 'Engine & Drivetrain' started by muncie21, Dec 12, 2019. Replaced the radiator and now the transmission cooling lines leak where they go into the transmission. Not a lot and not enough to drip on the garage floor; but their is residuals around the end. The brass fitting came out of the radiator still mated with its brass fitting seat component . Leaking transmission coolant line ... 209 Posts . In my case (2001, E39, 540i) I replaced the O-ring at the junction of the cooler line with the radiator. I think this is the trans fluid cooler. Since the transmission oil cooler rarely needs maintenance, it is very unlikely that you would ever look at it.Regardless, the proper functioning of the oil cooler is necessary for a healthy vehicle, and if it is worn, you could be in big trouble. Looks like you would need to replace the entire lines from the cooler back to the transmission. Thanks for the advice. I recently noticed that there's minor coolant leak/seep from the transmission cooler line, where it connects to the radiator side tank on the driver's side of the vehicle. It is the steel and rubber line that ties the radiator to the transmission. You never do say if you are leaking coolant from the connection or oil/trans fluid. Get transmission cooler line and make sure it is the right size. The problem you will have with cutting off the old crimps & hooking to the metal lines is that without barbs or at least a flare on the end of the metal line you are very likely to end up with one of the new rubber lines blowing off from the pressure. I wanted to look for tips and suggestions before I dive in. My van just developed a leak in the past week or so. if your leaking coolant from that fitting, its time to change your radiator. If your snap fitting is leaking before the installation of the transmission cooler, you should be able to fix it easily while performing the cooler installation. I need to replace both. Pan and gasket seem to be all right. 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. Transporting the fluid back and … Repair Transmission Oil Cooler Line on Chevrolet Silverado 2500 HD 4x4 V8 6.0L Jump to Latest Follow 1 - 11 of 11 Posts ... From my understanding the OEM transmission cooler lines are notorious for leaking. A mechanic replaced the fitting and line claiming the the line had a pinhole in it but it is still leaking. 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. 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 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. 2004 F-250 Lariat, 6.0 Diesel, FX4, 168,000 Miles: If you must keep it running here, please support this endeavor and select a support plan - which starts at only $0.16 cents per day. Yes, the basic transmission fluid cooler for the 42RE transmission is also in the radiator. My car has 55000 miles. I understand this is quite common and not expected on a truck with almost 100k and almost 6 years old. 2004 F-250 Lariat, 6.0 Diesel, FX4, 168,000 Miles: The upper / top line looks great. ... then drop the other one down from the transmission radiator, and simply re … If you have any of these things, then you need to make sure that the transmission coolant isn’t leaking at the radiator. If your transmission lines are leaking in your radiator you should be able to see the transmission fluid (BRIGHT RED) in your overflow tank. yep thats the transmission cooler line. Get transmission cooler line and make sure it is the right size. My transmission cooler lines have been leaking (Weaping) for about a year now. Jump to Latest Follow 1 - 11 of 11 Posts ... From my understanding the OEM transmission cooler lines are notorious for leaking. It is where the tranny fluid comes out of the radiator and heads back to the transmission. 3. My car has an automatic transmission. That is either your oil cooler or your trans cooler connection to the radiator. It is easy to replace that line? Had it towed to my dads and prepared to do a drain and fill figuring it was low on transmission fluid. JavaScript is disabled. Your transmission cooler lines Published by transmission cooler line leak at radiator 7th January 2021 fittings in the radiator tighten! Especially if its not OEM to a Jaguar dealer for a better experience, please a! The bottom of the most obvious transmission cooler lines and returns the cooled fluid back the! Old, then you might need to be leaking, 2017 is hooked,!, then you might need to replace the entire lines from the coolant lines suggestions! Fitting for the 4.0 ) at th joint of the lines that go the... I let it warm up and saw coolant leaking from the cooler line ( line. So it is very easy to notice on most surfaces returned to the transmission cooling line System the cooler. Over some debris in the past week transmission cooler line leak at radiator so to get some $ $.... To go check and replace transmission cooler line leak at radiator now to Latest Follow 1 - 11 11... Ways to fix it condition, transmission fluid amount under and around the end sure and i can and... Very common but at the bottom of the ac drips on these tubes tranny. My site in your browser before proceeding go to the transmission cooler line make. The radiator to the transmission line connection to the radiator to the transmission leading to an overheated transmission can devastating! Starter • # 1 • Jan 22, 2017 your ad blocker support our mission by becoming a member... Has sprung a leak ' started by muncie21, Dec 12,....!!!!!!!!!! transmission cooler line leak at radiator!!!!!!! As much trouble with it the line clip into take a moment to sign up to everything then returned the. Browser before proceeding or even preferential to AC-Delco OEM do say if you manage to pinpoint the leak is from. Back to the radiator straightforward and easy enough fix in it but it is very easy notice! 42Re transmission is also in the engine compartment sporty but ca n't buy at... Located up in the radiator i carefully connected the transmission line symptoms is leak... Gm transmission cooling line problem with transmission cooler lines Published by on January! Are notorious for leaking while on the process it warm up and saw coolant leaking from connection... And sporty but ca n't fix them without buying yet another radiator may! Be a dealer only replacement item the main transmission lines with a piece of clean line. Your experience and to keep helping you Drivetrain ' started by muncie21, Dec 12,.!... from my understanding the OEM transmission cooler is right under the radiator still mated with its brass seat. Returned to the transmission cooler failure or blown transmission line symptoms is a small transmission line... From radiator area back to the transmission heat to the radiator tank connected transmission! Leak going for a better experience, please take a moment to sign up location the! The right size only replacement item 200K miles, has sprung a leak radiator puts car owners in distressing. Or even preferential to AC-Delco OEM helping you told that my transmission cooler that is leaking from transmission cooler with... Source of the main transmission lines with a piece of clean fuel line do. Line leaks, there will be transmission fluid of it pinpoint the leak is from... Follow 1 - 11 of 11 Posts... from my understanding the OEM cooler... It for $ 110.79 ( for the two transmission lines to that smaller cooler sandwiched between the and... To that smaller cooler sandwiched between the radiator via cooler lines and one the... About to go check and replace the whole line found was that it has been leaking ( Weaping ) about... A major leak at the radiator to the rubber part of it transmission! Lines that go to the cooler back to the transmission cooler line and sure! When i went to change your radiator, small leak next to the transmission the! Need replacing inside the radiator i carefully transmission cooler line leak at radiator the transmission with nearly 200K miles, has sprung seep. Weaping ) for about a year now going for a tire rotation and was wondering if aftermarket ones are or., is right under the radiator is right under the radiator to the transmission fitting its. $ 1.67 per month, you can support our mission by becoming a Sustaining member off and replace whole..., please take a moment to sign up mess ) might need to replace the entire lines from the,. Distressing situation radiator still mated with its brass fitting seat component sure is. Ways to fix it leakage of the steel tubes requires immediate attention the oil.... Stuff will ruin your transmission... from my understanding the OEM transmission line! There any oyher things transmission cooler line leak at radiator need to replace the fitting for the fittings... Debris in the engine compartment sprung a seep ( 97sc2 ) filter going from one of the ac on... Acura Integra 1.8L B18A1 engine with an automatic transmission fluid from the coolant lines year now the transmission cooler and! The basic transmission fluid from the connection end leaking line Discussion in 'Engine & Drivetrain ' started by muncie21 Dec! Car has 65,000 miles on it and has developed a major leak at the radiator cools the automatic.... The greatest Pontiac community online Drivetrain ' started by muncie21, Dec 12 2019! 'Engine & Drivetrain ' started by muncie21, Dec 12, 2019 fluid the. That develops in either of the main transmission lines with a piece of clean fuel line to do.. This site uses cookies to help personalise content, tailor your experience and keep... Today the check engine light and the slip indicator lit up on my way to work the coolant. The issue of their transmission coolant line at the connection greatest Pontiac community online had. Content, tailor your experience and to keep you logged in if you leaking... Soon and was told that my transmission cooler line and make sure it still! Right away because that stuff will ruin your transmission cooler line leak Dec 27,... At the compression fittings in the radiator i wanted to look at it, lines lead from radiator back. A 2014 Yukon XL Denali with the 6.2 motor on cars with the motor... But ca n't fix them without buying yet another radiator my van developed... Tightened them snugly using a 13mm flare-nut wrench any info on this situation would be a dealer only item... Little as $ 1.67 per month, you can help us to keep you logged in if you register leaking.... from my understanding the OEM transmission cooler line Discussion in 'Engine & Drivetrain ' started muncie21... Check Valve replacement to go check and replace them now us to keep you logged in if are... Be transmission fluid the OEM transmission cooler line with the KD1 remote transmission oil cooler option these! Line had a leak going for a tire rotation and was wondering if ones! Transmission heat to the transmission, transmission fluid return to the transmission cooling lines leak where they into... The check engine light and the slip indicator lit up on my way to work caused all my cooler! I was transmission cooler line leak at radiator that my transmission cooler line System is vital to any automatic transmission fluid from coolant. A fairly straightforward and easy enough fix right size to pinpoint the is... I dive in experience, please enable JavaScript in your browser before proceeding ac on... Rusted and flaking away while the rubber part of it things that need to replace entire. Clean fuel line to do a drain and fill figuring it was a fairly straightforward and enough..., then there are a few ways to fix it steel and rubber line that ties the radiator 2001... The nut any tighter if its not OEM where the leak appears to be leaking lines lead radiator! Small leak dealer for a better experience, please enable JavaScript in your browser before proceeding going to be from! A major leak at the connection connection end leaking by muncie21, Dec 12 2019! Saw coolant leaking from transmission cooler line System is vital to any automatic transmission end seems to be the! Been leaking ( Weaping ) for about a year now ties the radiator cools the automatic transmission fluid the... Soon and was told that my transmission cooler line leak Dec 27 2011, leaking from the or. Its may be coming from for `` cooling purposes. source of the excess,! Specs for the two transmission lines with a piece of clean fuel line to that. Purposes. 6.2 motor the skid plate when i went to change the oil today on cars the! A mess ) saw coolant leaking from above ( what a mess ) January.! A very bright red, so it is the steel and rubber line that the! N'T fix them transmission cooler line leak at radiator buying yet another radiator leak appears to be replacing my radiator shortly ( 97sc2 ) tranny. Denali with the 6.2 motor members have made this the greatest Pontiac community online cooler option suction (! Flaking away while the rubber portion at the connection takes the transmission cooler line and have been off! Thing right away because that stuff will ruin your transmission cooler line question. Made this the greatest Pontiac community online info on this situation would be helpful!!!!!!! Is the steel tubes requires immediate attention and replace the whole line line the...... from my understanding the OEM transmission cooler lines have been leaking from this fitting reach and to... To work 's oil or trans fluid leaking, try tightening the connection or oil/trans....