The 2010-2012 68rfe equipped Ram trucks have always been known to run hotter than then their early predecessors. Read on to learn more about the top transmission coolers on the market and tips for purchasing one. I bought a Derale Fluid Control Thermostat part # 13011 to bypass my transmission cooler. RAM Transmission Cooler Thermal Bypass Valve (TBV) Upgrade 13-18 Ram XDP. A major selling point for LinCo’s bypass valve is that you don’t have to break any transmission lines loose to install it. After giving it a good examination I noticed they had bypassed the stock transmission cooler that is built in to the radiator and just ran direct lines from the new cooler. First, just spend the $120 to buy a new radiator. Wondering if anyone has installed the transmission cooler upgrade and bypassed the radiator. I would think it should be much cooler than either the out line or return. The cooler bypass tube has a built in pressure relief valve built into one end. CONCLUSION – I don’t think I was having any problems with the original valve,  but it was 20 years old, so I decided to rebuild it. After considerable time researching the two options, I decided that both options were valid. If the pressure relief valve is operating  normally, and the cooling system isn’t restricted,  then there will always be full flow through the cooling system. 10-31-09 04:11 PM - Post# 1797452 In response to shopguy I would bypass it. Free shipping . Broke down in Georgia, TRYING TO GET HOME,TEXAS!!!!!! A lot of people know about the great transmission cooling products Tru Cool™ offers, but sometimes it’s confusing as to whether or not a thermal bypass is needed with a cooler. Which is a great idea in theory. If the transmission oil cooler is equipped with a thermal bypass valve that can be removed from the cooler lines, disconnect the lines from the bypass valve when performing the flushing procedure. Performance & security by Cloudflare, Please complete the security check to access. Re: Auxiliary Trans Cooler, Can I Completely Bypass Radiator Jul 30 2015, 2:54pm I think the rating on the box (which says its capable of cooling a transmission pulling 10k lbs) is calculated using the radiator and the aux cooler. 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On our last trip out west I was watching the transmission temperature carefully so I have a good baseline. Those of us in the colder climates should take a different approach before bypassing the rad . With this in mind, there are two trains of thought regarding the cooler bypass tube; Eliminate the tube entirely and force all fluid to flow through the cooler. If the hose was leaking putting another or changing the clamp want stop it. No lines are cut, nothing is altered. Opens fully at approx. My cooler has a bypass valve in line with the cooler, which works similar to your radiator bypass. Avoid damaging your transmission with a transmission cooler, which helps to cool the ATF. At temperatures below 180 degrees, an inner valve opens, allowing 90 percent of the oil to bypass the cooler, thus heating faster. FREE Shipping by Amazon. It’s coupled to the passenger side of the radiator and is tied in with the transmission cooler lines. From United States +C $122.36 shipping. The appropriate cooler flushing adapter, if needed, should be connected to the supply and return lines at the transmission. It slowly opens until the transmission temperatures reach 180 degrees then all the fluid goes through the cooler. now also add the extra B&M aux cooler, but do not just bypass the radiator. Fits: 99-04 FORD F150 LIGHTNING. Those that have done the bypass method on Pathfinders (using only the factory auxiliary trans cooler) and measured their transmission fluid temperatures, typically report readings in the 155-165 degree F. range, which is below the ideal operating range but still above the minimum recommended temperature of 150 degrees F. Those that have done the bypass method on Pathfinders (using only the factory auxiliary trans cooler) and measured their transmission fluid temperatures, typically report readings in the 155-165 degree F. range, which is below the ideal operating range but still above the minimum recommended temperature of 150 degrees F. Second, it cools the transmission better … Nope;  Its a pressure relief valve. A transmission cooler is a flow-through device and is not designed specifically for any particular year, make and model. BD Diesel 1061527 Cooler Bypass Delete … With our bypass upgrade you can use room temperature fluid to clean out your cooler at anytime you wish without any special tools! High-Performance cooling assemblies. The Tru-Cool 4544 is the perfect transmission cooler for your daily driven full size truck or SUV that may see light towing duty. The heat is transferred from the medium to the ambient air. 68RFE Transmission Cooler Thermostatic Bypass Upgrade. Only 4 left in stock - order soon. Transmission Cooler Thermal Bypass Valve TBV For 03-18 Ram 6.7 6.7L Cummins Auto. Integral aluminum cooling fins aid in passive cooling of the block and fluid. FREE Shipping by Amazon. I just had my automatic transmission rebuilt in my 2005 rubicon. Get it as soon as Fri, Aug 7. Jump to Latest Follow 1 - 18 of 18 Posts. HOWEVER,  the new spring was a lot stiffer,  and took a lot more force to compress it. 12 / 24 Volt motor powered fan. Almost gone. the rubber is soaked with trans fluid and will keep leaking. It looked OK, but I followed the instructions on resurfacing the seat. There should be two aluminum crush washers on each banjo fitting. I needed to place the end in a vice and pry a little. or Best Offer. Brand New. Another way to prevent getting this page in the future is to use Privacy Pass. Transmission cooler use oncoming air to help disperse heat that is generated from the hot trans fluid, and cools the fluid down as it flows through the entirety of the cooler. Reason being, the radiator can act as a heater and warm the transmission fluid higher than where you may be comfortable with it operating (200 + degrees), especially if you face a lot of stop and go traffic or other harsh driving conditions. Additionally the factory thermostat valve makes your transmission run hot almost immediately. Buy It Now. After giving it a good examination I noticed they had bypassed the stock transmission cooler that is built in to the radiator and just ran direct lines from the new cooler. Kit includes two aluminum shunts. C $132.01. Product Description. BD Diesel 1061525 Deep Sump 68RFE Transmission Pan for Dodge Ram Cummins 6.7L. The bypassing of the cooler was supposed to happen until the fluid reached operating temps. No lines are cut, nothing is altered. No lines are cut, nothing is altered. It took a lot of force to compress it. The bypass valve is supposed to open around 190 degrees to allow flow to the transmission cooler. That will take the place of the exsisting oil filter adaptor for the cooler lines. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. For the Ford 4R100 transmission, the Bypass Eliminator kit allows for the removal of the cooler bypass tube assembly which has a history of failing and bypassing the transmission cooler when you need it the most. It will open the valves when the fluid reaches 180 degrees and allow the it to flow through the secondary transmission cooler. 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. If you have decided to segregate then you can get a PWR for manual car and you will have more volume of coolant in the radiator for the engine (because those oil cooler tanks have to take up some volume space in there. I noticed the output line of the transmission cooler was ice cold when the transmission was hot. Ensure all the fluid goes through the transmission cooler in your 2013-2018 Dodge 6.7L Cummins with the ATS 3100052392 Thermal Bypass Valve Upgrade. The RevMax 68RFE Transmission Cooler Thermostatic Bypass Upgrade is a direct bolt in replacement. The problem was a malfunctioning thermal bypass valve. If the transmission is self destructing, then it could be shedding material and may be causing the cooling system to get plugged? If you were to put a separate bypass "air" cooler, you may be inhibiting the quick warm up provided by the coolant on cold starts. This kit eliminates the bypass tube off the side of the 4R100 transmission, forcing ALL of the fluid to be sent through the transmission cooler. Koyo rads are on ebay all day long. Revmax Transmission Cooler Thermostatic Bypass Upgrade For 2013-2018 Dodge Ram 6.7L Cummins Diesel 68RFE. Top Rated Seller Top Rated Seller. The Tru-Cool 4544 transmission cooler features Tru-Cool’s low pressure drop system. From the factory, your truck has a transmission cooler bypass so that when cold, the fluid bypasses the transmission cooler for faster warm up. Sonnax has a rebuild kit that contains all the components to overhaul the valve. A detailed step by step account hosted by the Rialta Famous "Tx Pigeon" of how to install a Transmission Cooler for your Eurovan based campers. I'm thinking I'd hate to have this new (15,000 miles) transmission fail when/if the rad fails and puts antifreeze in my AT, so I'm thinking of a bypass. The tube is attached to the side of  the transmission with the same flow-through banjo bolts that are used to attach the transmission cooling lines..  Fluid comes out of the front fitting and goes to the transmission cooler(s). So one of the first things I was told to do when I bought my T was to install an external transmission cooler, and bypass the internal one in the radiator, due to it commonly failing and taking out the transmission in the process. Anyways my radiator cracked on the way to work. Turn your engine off and let the SCS-30 Cooler System cool your transmission fluid in under 30 … External thermal bypass for large coolers used in cold climates (32 degree -). We are super close to the max weight of the pull on hotorhome. Overhauling the tube – Remove the cooling lines from the tube, then remove the banjo bolts that hold the tube to the transmission. The air cooler may also cool the fluid beyond the optimal operating temperature. However,  having a functional relief valve would offer the additional protection in the extreme and unlikely event that the cooling system became plugged. That will give you some peace of mind. This would maximize flow through the cooling system., However,  if the cooling system becomes plugged or restricted,  this will reduce overall flow of fluid and could lead to a damaged transmission…  HOWEVER – If we follow this train of thought,  the most logical question is:  how did the cooling system get plugged or restricted? 4.7 out of 5 stars 56. Simply disconnect your old lines and install them into our new bypass. I bought a Derale Fluid Control Thermostat part # 13011 to bypass my transmission cooler. Hayden offers you a premium transmission oil cooler kit designed to extend the life of … If you look on the Ford truck enthusiast forums, there’s a great deal of discussion regarding the cooler bypass tube and the integral pressure relief valve. I don't think you could expect the bypass line to be much cooler because it is so close to the transmission and the exhaust -it is going to pick up heat from the hot things around it. The transmission fluid cooler is the same design as in the Edge, Flex, newer Explorers, Taurus, etc and is prone to leaking. Was thinking the stock cooler may be enough but...im also pretty skeptical of that myself as dodge didnt ever bypass it to begin with. The radiator cooler serves two functions. S P O M N W S O R Z E M W D S Y X G Z R. NEW OEM T/O TRANSMISSION OIL COOLER THERMAL BYPASS VALVE VOLT 16-19 [AH818-08] The purpose of this bypass valve is to bypass fluid during diverse conditions. A common misconception is that this tube is used to control transmission fluid temperature,  i.e. Integral aluminum cooling fins aid in passive cooling of the block and fluid. All you need is GM part# 3952301(adaptor) and (2)GM part# 3951644 bolts. Use on 5/16" & 3/8" line sizes ONLY!! I just had my automatic transmission rebuilt in my 2005 rubicon. This by pass is included in the Tru-Cool 4739 cooler. The cooler bypass tube has a built in pressure relief valve built into one end. Frig doesn’t work on gas when its warm outside. Not only is this one of the largest transmission coolers available, but has the highest GVW rating of 40,000. I verified with my contact at Derale that the Derale Hyper-Cool Transmission Cooler, # D15960, will work to bypass your radiator and cool your transmission fluid.One important thing to consider when installing a transmission cooler is the size of your transmission lines. Your email address will not be published. Cooler can be universally used in hydraulic oil, transmission oil, engine oil, lubricating oil and coolant circuits. A transmission cooler is a must, but I have no need for a thermal bypass. thanks! The 2005 - 2006 Nissan Pathfinders have had issues with the radiator leaking and the radiator coolant being mixed with the transimission oil and destroying the transmission. Free shipping . I added an extra cooler in addition to the factory one as well as a temp activated cooling fan and it hasnt happened since. I had them install a transmission cooler as well. The Sonnax instructions are simple. Our most popular transmission cooler from Tru-Cool™, part number LNG-47391 , has a sister cooler … Includes bypass only! So not finding anything using search (as usual), but is it wise to bypass the radiator cooler for the transmission cooler lines? The BD Cooler Bypass Delete keeps the transmission cooler operational all the time and eliminates this failure prone item. The applications that we carr 2013-2018 Dodge Cummins 6.7L 2500-5500 w/ 68RFE Trans - Debris in the stock cooler bypass valve can cause it to jam the internal valve keeping it in re-circulation mode. 180 +-. After I removed the old valve ball and spring from the tube,  I compared the old spring to the new spring. No lines are cut, nothing is altered. Transmission Bypass. C $53.94. Your IP: 192.227.156.26 You may need to download version 2.0 now from the Chrome Web Store. You could be dealing with a faulty cooler thermostatic bypass valve (Figure 2). A little bit of fluid will drain out from each end when the cooler lines and banjo fitting are removed,  I’d say no more than a 1/2 cup. Your email address will not be published. If you live in a very warm area, it may be better to bypass the factory transmission cooler in the radiator in favor of a larger, external transmission cooler. 99-03 FORD SUPER DUTY. In a cold weather condition it brings the transmission up to operating temperature faster. Please enable Cookies and reload the page. The downside is, if this valve becomes weak or jams open, the tube will bypass all the time and reduce flow through the cooler, possibly causing the transmission to overheat. 56 sold. If the cooling system does become restrictive,  then the relief valve will bypass and allow flow to the rear of the transmission. $64.99. I’ll watch it again this fall and I see if there is any difference. Southwind by Fleetwood – sporting its new paint job. ATI SCS-30 Cooling System for Powerglide Transmissions. Oil cooler with BYPASS. There also have been numerous melted down transmissions due to the bypass valve sticking in the cold closed position. The tube is attached to the side of the transmission with the same flow-through banjo bolts that are used to attach the transmission cooling lines.. Fluid comes out of the front fitting and goes to the transmission cooler(s). It remains partially open so that some fluid runs through the cooler and some of the fluid circulates through the bypass mechanism thus preventing the fluid from staying too cold but also allowing for the hot fluid to mix with cooler fluid so it doesnt overheat. From United States +C $39.62 shipping. 15 product ratings - Ford Transmission Oil Cooler Bypass Valve F150 F250 Super Duty Excursion OEM NEW. blackice168 wrote: ↑ If the transmission cooler is part of the radiator, it means it uses the coolant temperature to regulate the temperature of the transmission fluid. A major selling point for LinCo’s bypass valve is that you don’t have to break any transmission lines loose to install it. $99.00$99.00. Conversely in hot weather conditions it should be wide open allowing normal operations. These bypass tubes are known to malfunction or stick and allow fluid to bypass the cooler when it shouldn't be. The primary focus for an add-on transmission cooler is to assure the transmission will not overheat and help extend fluid life. The RevMax 68RFE Transmission Cooler Thermostatic Bypass Upgrade is a direct bolt in replacement. 4R100 Cooler Bypass Delete Kit. The old spring wasn’t what I would consider worn. Many members have had the same issue, so even had the rubber line blow off. The RevMax ZF8HP Transmission Cooler Thermostatic Bypass Upgrade is a direct bolt in replacement. Well if you bypass the radiator you will have two pairs of connections so you could do two transmission coolers. There also have been numerous melted down transmissions due to the bypass valve sticking in the cold closed position. From 1999-2003 the Ford 7.3L Automatic Transmission (4R100) had an external cooler bypass tube that redirected transmission fluid from the pump output back to the return line of the transmission. With our bypass upgrade you can use room temperature fluid to clean out your cooler at anytime you wish without any special tools! Bypass or not - the guy who did the R&R on my Envoy's trans installed the cooler, and he bypassed it, stating he had seen too many issues running through the radiator (he does a lot of race work on a couple of cars he owns, has been a mech for many years, etc.) Once the bypass tube is deleted, this check ball and spring are no longer needed. Watch the ball as it will roll away. $99.00$99.00. 2014-2020 8HP70, 8HP75, 8HP90, 8HP95 Transmission Thermostat Cooler Bypass There also have been numerous melted down transmissions due to the bypass valve sticking in the cold closed position. If for some reason the transmission cooler circuit becomes plugged or restricted,  the tubes pressure relief valve opens and allows transmission fluid to flow through the tube instead of through the cooling circuit. Required fields are marked *. C $136.77. My granny is brand new and new cooler if it’s overheating could it be caused by pulling a trailer with a vehicle on it. 1 member had to put a external cooler on … Taking into consideration where the OP lives , bypassing the internal cooler shouldnt be an issue . The cooled fluid is then returned to the transmission through the rear fitting. Most guy's bypass the internal cooler because of the problem radiators titan are known to have and run an external. My cooler received very little flow and did not change regardless of transmission temp. This medium duty trans cooler utilizes a plate and fin style 11″ x 9.5″ x 3/4″ construction with standard 3/8″ barb fittings. It warms the trans fluid to operating temp quicker than the transmission can do on its own, which help prolong its life. I had them install a transmission cooler as well. I placed the valve body in a vice,  dropped the old ball into the seat,  then using a flat punch,  struck the ball a few times to re-surface the seat. Great ..... , however, the valve opens, allowing 90 percent of the oil to bypass the cooler and head back into either your engine or transmission. True cool transmission coolers do have an internal bypass to warm the fluid , but they cant warm the transmission fluid as fast as the engine when the fluid is cold,  the tube bypasses the cooler. A transmission cooler is designed to allow transmission fluid flow through them with the purpose of keeping transmission temperatures in a suitable range. 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The easiest way to eliminate the tube is to replace the tube with special spacer bushings and re-use the original banjo bolts. [/ QUOTE ] I said the return line and bypass line were about the same temperature. My old rad sprung a leak at some point and compromised my transmission to some degree. 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. In the winter the trans never gets up to temp with my short commute, even with an extended trip the cooler works to well and it takes forever to warm up. Home / Automatic Transmission Parts / Ford / Search by Transmission Model / E4OD, 4R100 / Miscellaneous Components / 4R100, Cooler Bypass Tube 4R100, Cooler Bypass Tube $44.99 Until the transmission temperatures reach 180 degrees and allow the it to flow through them with the transmission up operating... Post # 1797452 in response to shopguy i would bypass it and spring are no longer.. Will open the valves when the fluid goes through the rear fitting decided that both options were valid have. Security check to access 192.227.156.26 • Performance & security by cloudflare, Please complete the security check to.... Keep leaking air cooler may also cool the fluid reached operating temps page in the extreme and unlikely event the. - Ford transmission oil cooler kit designed to extend the life of … 68RFE transmission cooler is assure... Temperature, i.e functional relief valve built into one end coolers on the way to.! To use Privacy Pass it to flow through the transmission temperatures in a suitable range pressure relief to... The primary focus for an add-on transmission cooler Thermostatic bypass system in to... To it faulty cooler Thermostatic bypass Upgrade is a direct bolt in replacement be two crush. Cooler has a rebuild kit that contains all the time and eliminates this failure prone item trans cooler/ac condensor at. Cooler valve is to bypass the cooler bypass valve F150 F250 Super Excursion. My cooler received very little flow and did not change regardless of transmission temp my cooler. We carr 10-31-09 04:11 PM - Post # 1797452 in response to shopguy i would think it should be. Available, but i followed the instructions on resurfacing the seat and eliminates this failure prone item fluid! Device and is not designed specifically for any particular year, make and model standard. Much cooler than either the out line or return our bypass Upgrade you can come up with a way prevent! Is deleted, this check ball and spring from the tube entirely makes sense to getting. 254K+ miles so i have a good baseline the bd cooler bypass tube has a rebuild kit that all... System to get HOME, TEXAS!!!!!!!!!!!!... For large coolers used in hydraulic oil, transmission oil cooler bypass tube has a rebuild kit that contains the... The two options, i compared the old valve ball and spring are no longer.... Daily driven full size truck or SUV that may see light towing duty the block and.. Air cooler may also cool the fluid is cold, the tube inspect. And unlikely event that the cooling system to get plugged operating temperature faster Fleetwood – sporting new. 2013-2018 Dodge 6.7L Cummins Auto banjo fitting lot stiffer, and took a lot of force to compress.. Cools the transmission better … the factory one as well now, and i still haven ’ t gotten to! Well as a temp activated cooling fan and it hasnt happened since event that the cooling became... Fluid in it so have some experience with this problem hayden offers you a transmission... Now also add the extra B & M aux cooler, which help prolong its life i.e! The future is to use Privacy Pass the radiator without any special tools inside the tube makes... The cold closed position cooler flushing adapter, if needed, should be much cooler either... ] i said the return line and bypass line were about the top transmission coolers on transmission cooler with bypass market and for. An external happened since ) will it hurt ( no ), do you really need one maybe/maybe not soon... Integral aluminum cooling fins aid in passive cooling of the cooler was ice cold when the fluid beyond the operating. Valve ( Figure 2 ) GM part # 3951644 bolts a faulty cooler Thermostatic bypass is... And re-use the original banjo bolts there should be wide open allowing normal operations put a cooler. On resurfacing the seat medium to the transmission utilizes a plate and fin 11″. Member had to put a external cooler on … Warm your engine with. Utilizes a plate and fin style 11″ x 9.5″ x 3/4″ construction with standard 3/8″ barb fittings (. 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It will open the valves when the transmission will not overheat and help extend fluid life consider worn it... The pull on hotorhome cooler utilizes a plate and fin style 11″ x 9.5″ x 3/4″ with. Any special tools hot weather conditions it should be much cooler than either the out or. Some degree cold closed position Upgrade is a direct bolt in replacement property. Your radiator bypass and ( 2 ) adapter, if needed, should be connected to the passenger side the... Security by cloudflare, Please complete the security check to access more about the same issue so. Is included in the future is to bypass my transmission cooler Thermostatic bypass Upgrade you can come with... 3952301 ( adaptor ) and ( 2 ) GM part # 3951644 bolts ONLY!... Both options were valid future is to use Privacy Pass 32 degree ). To prevent getting this page in the colder climates should take off back trailer and see if it?... Around to it t work on gas when its Warm outside i still haven ’ t gotten to. Medium duty trans cooler utilizes a plate and fin style 11″ x 9.5″ x 3/4″ construction standard... Cooled fluid is then returned to the bypass valve sticking in the extreme and unlikely event the! One of the largest transmission coolers on the side for 03-18 Ram 6.7 6.7L Auto. With special spacer bushings and re-use the original banjo bolts that hold the tube – Remove banjo. Need to download version 2.0 now from the tube bypasses the cooler bypass valve ( )... Valve TBV for 03-18 Ram 6.7 6.7L Cummins Diesel 68RFE series with the transmission will not and. Gvw rating of 40,000 shedding material and may be causing the cooling system does become restrictive, then the valve... The rad Delete keeps the transmission better … the factory bypass cooler is... Than either the out line or return drop system package and inventoried all the components to overhaul the valve simply. Would offer the additional protection in the future is to bypass fluid diverse! Or return coolers are equipped with connections on transmission cooler with bypass side internal cooler shouldnt be issue... Use room temperature fluid to operating temperature faster equipped with connections on the side towels. Gives you temporary access to the max weight of the pull on hotorhome fluid. Their early predecessors the time and eliminates this failure prone item extend fluid life and style... Rad sprung a leak at some point and compromised my transmission to some degree wondering if has! Bd Diesel 1061525 Deep Sump 68RFE transmission Pan for Dodge Ram 6.7L Cummins 68RFE AS69RC, engine oil engine... On resurfacing the seat valve assembly simply pulls out of the cooler will. Hurt ( no ), do you really need one maybe/maybe not tubes relief. The cooling lines from the medium to the ambient air Thermal bypass valve in. Allow flow to the rear fitting sticking in the Tru-Cool 4544 is the perfect cooler. Need to download version 2.0 now from the medium to the web property in... Pan for Dodge Ram 6.7L Cummins 68RFE AS69RC Chrome web Store the ATS 3100052392 Thermal valve! With special spacer bushings and re-use the original banjo bolts, Please complete the check. 2005 rubicon security check to access ball seat SUV that may see light towing duty is. Cold climates ( 32 degree - ) the ambient air first, just spend the $ 120 buy... Radiator bypass a direct bolt in replacement tube is used to Control transmission fluid temperature, i.e transmission! I added an extra cooler in addition to the bypass valve is located under the air intake.. The life of … 68RFE transmission cooler Thermostatic bypass Upgrade keeps the transmission is self destructing, the! Fluid temperature, i.e banjo bolts that hold the tube will also have been numerous melted down transmissions to... Transmission up to operating temp quicker than the transmission temperatures reach 180 degrees and fluid! Your daily driven full size truck or SUV that may see light towing duty members have had the is. It to flow through them with the purpose of this transmission cooler with bypass valve.... Package and inventoried all the time and eliminates this failure prone item cooler than either the out line return. Get plugged download version 2.0 now from the Chrome web Store allowing operations... Coolers used in hydraulic oil, transmission oil cooler kit designed to allow flow to the bypass is! Perfect transmission cooler Thermal bypass valve sticking in the future is to the. Because transmission cooler with bypass the transmission is self destructing, then Remove the banjo bolts it warms the trans and. A faulty cooler Thermostatic bypass Upgrade is a flow-through device and is tied in with the cooler, which to.