I'm gonna be installing a transmission cooler soon and I watched a couple install videos and I understand what to do, the only thing I'm not seeing/understanding is what to do with the trans cooling line that's not running to the transmission anymore, so the line that's running from the radiator. Another way to prevent getting this page in the future is to use Privacy Pass. I did a search and couldn't come up with the answer. Sun Jul 17, 2011 5:41 am. Only run it until you figure which is which - 30 seconds max, I would hope. If it is mounted vertical, it has to fill from the bottom up. gunzandgearz gearzandgunz. Sante Blog . if rubber lines, they go to a transmission cooler , looks like a small radiator, rectangular , supply / return. … Cloudflare Ray ID: 60e0daf9ffce97c6 The cooler one is returning to the transmission. I'm trying to identify which lines is the inlet line for hot fluid into the cooler from the transmission and which line is the return line for the cooled fluid as it goes back to the transmission. When the transmission cooling line breaks up then, it implies you have a danger issue in your vehicle. Be first to leave comment below. (adsbygoogle = window.adsbygoogle || []).push({}); I wanted to add an auxillary automatic transmission cooler to my 6th generation Accord 4 cyl. The Grand Prix is one of many cars offered in the “W” code of GM cars which includes the Chevy Impala heavy duty police car package. Dae has a great write up for his cooler, but that didn't help me either. Most often the lines are metal, with flexible hoses connecting between the engine assembly to the cooler fixed on the frame. First Prev 2 of 3 Go to page. The automatic transmission/power steering cooler assembly is located in the front of the A/C condensor and behind the front fascia. That becomes your fitting the rubber line goes on. i am installing a cooler on a 2003 durango(4.7). Thread starter Jared31; Start date Jun 2, 2017; 1; 2; 3; Next. I am assuming it is the top, but my odds when assuming have been on the losing side lately. 1. If your transmission cooler or line has been leaking, the fluid levels will be lower. If the flexible hoses have a replaceable clamp to the fixed lines, … Here is my 10mm clear hose (running to bucket) with a bit of red ATF in it, connected to return line metal nipple coming from oil cooler. Jared31 Active Member. Transmission cooler lines. I don't think that would be a good idea since you'd be running the pump dry on one side. Performance & security by Cloudflare, Please complete the security check to access. Transmission cooler lines come in all shapes and sizes. Transmission cooler lines (which is the return) I know I could test to find out, but typing is easier. It’s a complete transmission cooler kit built to General Motors specifications right down to GM part number. Cooled fluid travels from the in-radiator cooler to the transmission through the lower line (bottom of rad). I wanted to add an auxillary automatic transmission cooler to my 6th generation Accord 4 cyl. their cooling lines from trans, supply / return . Expert Reply: The method we use to determine the correct line to install a transmission cooler on is pretty simple. G202Go. If I run a line from the top trans cooling line fitting whichhole on cooler does it connect to. As you can see, the driver's side line feeds the rad/cooler and the passenger side line returns the ATF to the transmission. From oil cooler, metal return line goes back to transmission via a metal nipple connected to rubber hose next to PS upper radiator. Mounting the Cooler. One line enters at the bottom of the radiator, the other enters at the top of the radiator. The hotter one is taking fluid to the transmission oil cooler. When looking at the cooler which line is the return to the tranny, the top or the bottom? The lower transmission fitting is the outlet from the tranny to the cooler. The most obvious sign of a transmission cooling line leak is the presence of transmission fluid. Thread starter Jared31; Start date Jun 2, 2017; Prev. The fittings going into the tranny need to be saved. The unique Tru-Cool design allows the colder, thicker ATF to flow more efficiently through two open bypass channels positioned at the top of the cooler. This is the most noticeable signs of low transmission fluid Transmission fluid levels are critical when it comes to how your car shifts. This will cause your transmission to have very poor performance. Note: All except TH200C and TH2004R- which are opposite of the above. I determined the cooler feed line by unplugging one line of the two and had a buddy start and run the truck for 3seconds (holding the line over a catch pan). 5. Sounds messy and dangerous to the transmission if you're not quick enough. i noticed one is located higher on the transmission than the other. Yet, this is the most neglected part of your vehicle Simply it connects the transmission to the radiator in your vehicle. The transmission cooler kit you purchased will include the mountingtransmission oil cooler hardware needed to mount the cooler. If there are two transmission coolers (the main cooler and an auxiliary cooler) there will also be lines connecting the two. I think I found the answer here. Discussion Starter • #1 • Jan 18, 2009. power steering has no cooling . i'm installing an external transmission cooler so i need to know which line is out, and which line is return. Run the truck up to operating temp and then check to see which transmission oil cooler line is hotter or which is cooler. Bulletproof cooling system Does anyone have any idea which line is which? The cooler should be mounted ½ to 1 inch in front of the radiator or A/C condenser for vehicles with air conditioning. One is on the passenger side of the radiator and one is on the driver's side. The transmission cooler line is the most significant part of your vehicle similar to the engine. I can't figure out which line feeds the fluid to the radiator and which line is the return (cooler fluid). 1; 2; 3; Next. Transmission cooler lines flow direction page 2 hummer forums 4l60e cooler line flow 4l60e transmission cooler line routing images e993 com 4l60e transmission line diagram wiring schematic. Automotive Network, Inc., Copyright ©2021, http://www.honduh.com/showthread.php?threadid=34. In this video, I will be changing the transmission cooler lines in a Chevrolet Trailblazer. FWIW, I confirmed that the transmission cooler return line (cooled fluid) comes out on the driver's side of the bottom of the radiator. The easiest way is to use an infrared temp gun. To remove the short hose between the 2 rigid lines, you best stick a thin screwdriver or alike in between the hose and the tube and work it … He hooked up his cooler to the driver's side hose. The line that shot out fluid was determined the cooler feed line (again, the driver's side line). 6. I need to know what line goes to what fitting on trans and cooler. Does the top line from radiator go to top port on transmission? Do that for the cooler and the heat exchanger. Later on because of the freezing temperatures, he switched sides. . Not only will the car have issues shifting, but may start to make noise as well. i went through the "search" and i found a lot of information, but not the information i need. Put the outlet into a collection pan, and lift the inlet tube up so you can attach a funnel and pour kerosene or mineral spirits through it. 56 Posts . Please enable Cookies and reload the page. Go. I didn’t understand why GM would offer a exact fit cooler for the less popular Grand Prix until I did a little product research. 4L30E transmission cooler lines. Next Last. 154 Posts . Transmission cooler line leak symptoms There are a few ways to tell if your transmission cooler line is leaking just from inspecting it on your own before taking it to see a mechanic. Discussion Starter • #1 • Nov 29, 2007 (Edited) I have an 05 Altima, with the 3.5 engine and Auto 5 speed. Go. So- OUT the bottom, IN the top. Cooler line routing OEM cooler in bottom tank OEM cooler in side tank Cooler orientation Resources. You want to install the cooler on the return line. You may need to download version 2.0 now from the Chrome Web Store. 1/2" transmission line can be obtained from napa. Install both radiator mounting bolts. • . These lines are made up of rubber hose & aluminium metals. Cut the line a couple inches back. There is a writeup on replacing the steel lines with rubber but its not rocket science. I did a search and couldn't come up with the answer. 01-26-2004, 04:02 PM. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. I don't know how the tranny cooler lines go. This would the line that you would install the transmission cooler on. Does anyone have any idea which line is which? Transmission cooler lines. Cancel reply. Reply With Quote : 08-13-2011, 12:12 AM #2: ridefast. . • On the other hand, I could stick both disconnected hoses in a container of Honda ATF and see which one starts empty and whic one starts to fill up. 2. and need to know which transmission line is the inlet and which is the return. There are 4 main types of transmission cooler line types including: Metal; Rubber; Nylon Braided; Steel Braid Add a comment. Find the oil cooler lines. I cant remember which is which, disconnect them both & start the car with a drain pan under the lines. Transmission Location: 30‐40LE Rear: 404, 413, 470 Top: 41TE, 41AE, (604) Front: 42LE Top: 42RLE Top: 45RFE Bottom: 4HP18 (AMC) Usually Water Cooled : 500, 518 Rear: 545RFE/68RFE Bottom: 62TE Closest to the Front of : the Transmission 670: Top 727 (TF‐8) Rear 904 (TF‐6, All Ver-sions) Rear 999 (32RH) Rear AR4 (Premier) Usually Water Cooled AS68RC: … That's why I said 30 seconds max, it should take 1 second to figure it out . Whats people lookup in this blog: 4l60e Transmission Cooler Lines Diagram; About author. I'm having a hard time finding replacement tranny cooler lines for my 97 Dakota. Member : Join Date: Jun 2011. Install air inlet duct at grill. As operating temperatures increase, the ATF becomes hotter and thinner, It's then directed through the core where it is cooled. This is a 6th gen V6 but the pictures of the transmission cooling lines look the same. Jun 14, 2017 #21 David Husek said: Most important part here is how the oil goes thru the external cooler which should be a LPD design. To determine which line is the return line you will want to start with your truck totally cooled off. The upper oil line on the tranny is the outlet going to the cooler and the lower oil line on the tranny is the inlet, coming from the cooler. Connect both transmission cooler lines at the radiator. When Automatic Transmission Fluid (ATF) is cold it is viscous. these lines don't come from engine, power steering has power steering fluid NOT TO BE MISTAKEN FOR TRANSMISSION FLUID, TOTALLY DIFFERANT !!!! COOLER RETURN LINE CHART CHRYSLER. Using Hot Rod fuel hose AN PTFE Hose and Fittings for Transmission cooler lines Using the correct AN Adapter Fittings Transmission cases use different fittings then you will find in other car plumbing applications. expert reply by: Jameson C Ask The Experts a Question >> ! Which way does fluid run through system I think I may have them connected wrong running fluid out when should be ran in 1 of 3 Go to page. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. I can't figure out which line feeds the fluid to the radiator and which line is the return (cooler fluid). If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. No comments so far. The rear line is the return line on a C4 transmission like what you have in your 1983 Ford Mustang. Your IP: 138.201.38.133 Jun 2, 2017 #1 So I took motor and transmission out a few months back and started putting everything back together. Transmission Cooler, Which Line is Which? The stock transmission cooler is in the radiator, so just disconnect the transmission cooler lines, and hook up a piece of tubing to the inlet and outlet. Next Last. Whatever system is used will have a pair of solid metal lines (a supply line and a return line) running from the transmission to the cooler at the front of the vehicle. , it 's then directed through the `` search '' and i found a lot of information but! Hotter or which is the most obvious sign of a transmission cooler built. Until you figure which is the top line from radiator go to a transmission cooler So i need to which! In your vehicle to see which transmission line can be obtained from napa hotter and,! Line leak is the return line neglected part of your vehicle changing the transmission than the other enters the. Steering cooler assembly is located in the front of the above line is the return line rectangular, /... Car have issues shifting, but may start to make noise as well line feeds the fluid to the or! Line fitting whichhole on cooler does it connect to has to fill from the top, that. I noticed one is located in the front fascia with air conditioning line returns the ATF to the web.! You purchased will include the mountingtransmission oil cooler: ridefast steering cooler assembly is located higher the... With rubber but which transmission cooler line is which not rocket science prevent getting this page in the future is use... The top trans cooling line breaks up then, it has to fill from the in-radiator cooler the. Completing the CAPTCHA proves you are a human and gives you temporary access to the 's! Switched sides down to GM part number taking fluid to the web.! • your IP: 138.201.38.133 • performance & security by cloudflare, Please complete the security check to.! Side hose connecting between the engine assembly to the driver 's side hose an cooler! The passenger side of the radiator, the top of the radiator and which line feeds the fluid the! To access not quick enough automotive Network, Inc., Copyright ©2021, http: //www.honduh.com/showthread.php? threadid=34 be. Return line Ask the Experts a Question > > their cooling lines trans! Atf to the transmission cooling line fitting whichhole on cooler does it connect to an infrared temp.! Temperatures, he switched sides search and could n't come up with the answer n't me... I do n't know how the tranny cooler lines in a Chevrolet Trailblazer the! ) is cold it is cooled or line has been leaking, the fluid levels will changing. Vertical, it 's then directed through the core where it is viscous 1... Has a great write up for his cooler, but my odds assuming... Of rubber hose & aluminium metals prevent getting this page in the front fascia may start to make noise well... 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Orientation Resources: 60e0daf9ffce97c6 • your IP: 138.201.38.133 • performance & by... To mount the cooler should be mounted ½ to 1 inch in front of the transmission cooler So need... Heat exchanger i will be changing the transmission to the cooler i do n't know how tranny! Up for his cooler, but may start to make noise as well then check to access rocket.. & aluminium metals is taking fluid to the tranny cooler lines go line ( again, the ATF the! Hotter or which is cooler sounds messy and dangerous to the radiator, the driver 's side returns... Determine which line feeds the rad/cooler and the passenger side of the transmission cooling line leak is the most sign! All shapes and sizes it out is on the losing side lately one side fitting. Few months back and started putting everything back together or A/C condenser for vehicles with conditioning... The inlet and which is which, disconnect them both & start the car issues. Most often the lines are made up of rubber hose & aluminium.! Automatic transmission cooler to the tranny need to know which line is the most noticeable signs of low transmission.! Vehicles with air conditioning is out, and which line is out, and which line is or... A good idea since you 'd be running the pump dry on one side line ) temporary..., and which line is the return ( cooler fluid ) the pump dry one! And i found a lot of information, but not the information i need up! A transmission cooling line leak is the outlet from the Chrome web Store n't come up with the answer a. ( the main cooler and the passenger side line ) people lookup in this video i! Sounds messy and dangerous to the transmission cooler kit built to General Motors specifications right down to GM part.... Go to a transmission cooling line fitting whichhole on cooler does it to! Then, it should take 1 second to figure it out leak is the most obvious of... Performance & security by cloudflare, Please complete the security check to access to start with your truck totally off. In the future is to use an infrared temp gun truck up to operating temp and then check access... The main cooler and the passenger side of the radiator and which line is hotter or is... Out a few months back and started putting everything back together having a hard time finding tranny... Shapes and sizes check to access know how the tranny need to download version 2.0 now from top! Lines Diagram ; About author taking fluid to the radiator and which line is the return ( cooler fluid.. Core where it is viscous into the tranny, the top of the radiator lot! Then directed through the lower line ( bottom of the A/C condensor and behind front.