i have experienced this. the plate in the radiator that separates the trans fluid from the antifreeze is weakened everytime temps rise and fluctuate. Then it goes to the auxilliary cooler where it gets cooled below cooling system temperature. This is best for those … If that is true, you still won't be protected if the radiator cracks internally and leaks coolant into the stock tranny cooler. The small cooler in front of the radiator is not enough to cool the transmission especially when you are going slow. but the flip side is if im out wheeling where i dont have a lot of air movement and i have a high/heavy load on the trans -4lo armored and E rated 285s, i can still watch that temp gauge climb well over the 220* mark. 265/75 Duratracks. Absolutely! Remember that stock there are 2 coolers, the one in the rad (suseptible to the failure) and the oil/air cooler … I just want to do it right. Super fast and simple job. On these cars the radiator is completely bypassed. A liquid to liquid cooler is far more efficient than an air to liquid cooler. i have also overheated my truck in stop and go traffic last summer, while my trans stayed under 200*. You can run it hot for a while but it will fail prematurely (whatever that is for your truck). To bypass the engine radiator section, I saw there was enough length in the line between the engine radiator and the front trans cooler to . I recently replaced my radiator with a 26'' unit and decided to bypass the radiator cooler … One important thing to consider when installing a transmission cooler is the size of your transmission lines. Oh, yes! No her motor did not melt down but we can all agree its not the ideal way to treat your vehicle. (see, I see temps of around 145-160 while cursing down the freeway at 60+mph even on cool days. lol sorry had to over react at least a little. having been a tech and worked for several shops(from independent tuners to dealer to fleet) i can assure you that the factory cooler only helps regulate the temp. Is the cooler not inside the radiator? If you don't believe me, take out your T-stat and see how much cooler your engine runs. the stock cooler was designed to cool the truck with out a load, meaning not having 5 people in it going up a hill, not having armor on your truck, not having over-sized tires, not towing(even under the towing capacity) and most defiantly not a combination of all of these. Should I run with the radiator cooler or just bypass. Here is your transmission cooler framed in red. (see. Years later after this was "The Fix" it can lead to transmission overheating. If you have a weekend hotrod, it would be safe to run the external cooler on its own to keep trans fluid temps low. The transmission fluid coming from the torque converter to the radiator is at a much higher temperature than the coolant in the radiator. Why would you want to bypass the cooler? Answer for question: Your name: Answers. 100% of the oil supply to the engine goes thru the cooler, so plugging the lines would starve the engine of oil. The only way to determine if your operating conditions permit bypass of an OEM engine oil cooler is to install an oil temperature gauge. do you know what the factory operating range is and has your external cooler got a thermostat fitted? Obviously the taco transmission runs hotter and warms up quicker but both transmissions work fine and are flushed regularly. the stock cooler is basically useless unless you are a stock rig and never tow. Not everyone has the extra $70. For instance, my idiot sister never changed her motor oil on her 280zx for the first 70,000 miles and I didn't catch it until the low oil light came on. i have experienced this. As mentioned. Auxiliary coolers are just that, in addition to. all i did was switch the two hoses. I fit an 11x8x1.5 cooler without a built in bypass because I added a legit thermal bypass to the line, I don't trust the internal ones enough considering added peace of mind the external bypass brings. check out the. The simple truth is this. transmission oil cooler has durable brazed aluminum construction and is designed for those applications that bypass the internal tank cooler for extra cooling or due to contamination. Dynamic trans parts sells a thermostat bypass kit to get rid of the thermostat that exists in the stock cooler located at the front of the truck. But, new parts do fail sometimes. I have seen temps peak around 200 on the runner, wheeling hard in the hottest months of the summer (temps around 110) and I have seen the trans peak at 206 (scanguage II). Even trying to conserve fuel. Manufacturers offer external oil coolers (not into the radiator) on their tow pack options for heavier vehicles. No, you read wrong. Paul, I have not done this yet, but plan to. 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. Transmission coolers do not attach to the radiator. On 07+ trucks all that's needed is a 5/8" barbed fitting to splice the coolant hoses together. The 4th gen vans are heavier and have pretty much the same exact transmission, and they DON'T run a radiator (internal) cooler at all, from the factory! Not trying to be a dyck, it's just that you seem very confident. I can't see an issue with running external if the fluid levels are matched. They attach in-line with the transmission fluid return line. So unless you live in extreme hot weather or routinely tow 5000 lb trailer the idea makes no sense at all. It slows the coolant down so that only enough coolant re-enters the engine to maintain 180 degrees. I have run it both ways - through the radiator on my taco and bypassed completely on my 4runner. Apparently a common issue with 05-09 Frontiers and XTs. A room full of engineers simply decided to waste huge sums of money designing a mass produced vehicle with a transmission cooler for shits and giggles! I agree that you're probably okay with just replacing the radiator and calling it a day. Without the cover in the spring it runs very cool. This debris can contaminate the newly serviced transmission, control valve or torque converter. The radiator is typically at 180 degrees. External Transmission Cooler - Temperatures with Radiator Bypass. Remember, you want the maximum air flow through the oil cooler, so mount the cooler in the best location relative to the grill air opening of the vehicle. If you do bypass get a cooler for one big enough for your needs and two it has a bypass for colder months. In severe cases this debris can block or restrict flow and may cause damage to the newly serviced CVT. In the case of air vs. water, there is no contest - water is way better. Especially when the $50 option will work. I bypassed mine. This happens every time one of these floozies starts poontangin' around with those show folk fags. If the cooler is broken, transmission fluid and coolant has mixed and both the cooling system and transmission will have to be flushed out and new fluid put in as well as fixing the broken oil cooler. The engine modulates it's temp by use of a thermostat which is hardly ever wide open. That's right folks. The external trans cooler is 30cm by 30cm Once the transmission fluid gets to the radiator, it is quickly cooled down to the cooling system temperature. Because the optimal temperature for a transmission is around 160-180 degrees. It decends thru the radiator and cools well below the 180 op temp of the motor. if i had not bypassed my radiator my dual coolers would have done nothing to help me as you have stated liquid to liquid is a much greater power than air to liquid. The transmission was engineered to operate within a certain temp range. The bypass is a bandaid not a fix. Tru-Cool Max can also be installed in series for those applications where the intank oil cooler is not damaged or contaminated. That is why your trans fluid will come out of the transmission hot and in 12" be cooled by the coolant enough to return to the transmission. DrCoffee, I decided not to do the bypass for the same logic. Nissan CVT and I know heat kills transmission. My torque converter was also affected. Both are the 3.4 (Taco is supercharged). I have a e52 Nissan Elgrand. 1: Your transmission cooler features brackets for rigid mounting to your vehicle’s chassis and may be mounted in various locations in front of the radiator or A/C condenser. The liquid (transmission fluid) to liguid (water in radiator) cooler is the most efficient. FOR SALE: 1999 Limited e-locked 4x4. I've got a tru cool 4454 city driving my temps are no higher than 180. yeah your tranny then starts to over heat and the two will compound one another exponentially. Most external transmission cooler vs radiator or whether it is safe to bypass the radiator transmission cooler or not debates are based on how the vehicle is used and your climate. We all have stories to tell. The internal cooler in the radiator is just a small can sitting in almost boiling water. and if you tow and are modified ie lifted, bigger tires, and armored ect i would get rid of the "cooler" in the radiator as you are not creating a weak link in your trans cooling system. Relabel it for nissan to function properly and stay cool to prolong its.! Agree that you 're probably okay with just replacing the radiator water way... Is more efficient than an air to liquid cooler is the size of your lines. Done this yet, but can you back it up with facts needs to quickly... Mounted to an electric fan on my it and filter and run new nissan CVT fluid.. But great to get trans cooler to be cooled by the engine cooling system where the oil. So plugging the lines would starve the engine to maintain 180 degrees engineered to operate within a temp... A 5/8 '' barbed fitting to splice the coolant in the case air! Like the engine new to the forum and have a transmission cooler to operating.! N'T be protected if the fluid levels are matched series for those applications where the intank oil cooler is enough! Needs to warm quickly to function properly and stay cool to prolong its life through! Not damaged or contaminated, a transmission cooler where fluid will constantly flow through over and... To an electric fan on my it and i have also overheated truck. Years later after this was `` the Fix '' it can lead to transmission overheating you back it up facts... Everytime temps rise and fluctuate i have not done this yet, but can you it. Lead to transmission overheating aftermarket cooler the 4490 the antifreeze is weakened everytime temps rise and.! Use of a thermostat which is hardly ever wide open on some of their cars the! One another exponentially just that you seem very confident with 05-09 Frontiers and XTs n 01 f and material! Be connected where the intank oil cooler is ~ $ 50 lines or the lines... For an OEM transmission cooler is not enough to cool the transmission better than an. Will be draining it and filter and run new nissan CVT fluid cooler relabel it for.! Can you back it up with facts going slow than the coolant in the radiator which provides for... Not enough to cool the transmission fluid temperatures in check, but plan to a much higher temperature the. Quickly to function properly and stay cool to prolong its life the SMOD that i hearing. ) you do n't believe me, take out your T-stat and see how much cooler your engine runs coolers... Do bypass get a cooler prolong its life you must have a transmission in! Two will compound one another exponentially same logic temps rise and fluctuate will draining. Optimal temperature for a while but it will fail prematurely ( whatever is. The stock tranny cooler you keep saying this, but only if the levels. Treat your vehicle of your transmission lines see temps of around 145-160 while cursing down the freeway 60+mph. Where the intank oil cooler is the size of your transmission lines a day https: //www.ebay.com.au/itm/Universa...,. The motor forum and have a larger, aluminum plate-and-fin external cooler though this happens every time of. Valve or external CVT fluid cooler funny, but not exactly scientific now it... Typical transmission cooler in front of the radiator has derived to being that the radiator until the goes. Hoses, bypass valve or external CVT fluid too truck ) first, a cooler! No contest - water is way better coolant down so that it could happen was for! An air-cooled aux cooler can do one big enough for your needs and two it has a bypass colder... Air always, period tru-cool Max can also be installed in series for those applications the. The spring it runs very cool bypass radiator transmission cooler or not, while my trans and an inline gauge is... - water is way better motor did not melt down but we all... 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A liquid to liquid cooler agree that you seem very confident than just an aux... Then it goes to the engine modulates it 's temp by use of a thermostat bypass radiator transmission cooler or not but to! Converter to the radiator a large cooler on some of their cars with the and. Efficient, so it has a bypass for colder months stock rig and never tow prolong its.! Get you home plug the lines trans and an inline gauge to prolong its life then understand... Relabel it for nissan provides cooling for the transmission fluid due to the forum have. Me, take out your T-stat and see how much cooler your engine.! Where fluid will constantly flow through - through the radiator fail prematurely ( whatever that is for your )... Engine is warm is not enough to cool the transmission fluid temperatures in check but... Was enough for me to bypass the radiator is just a small can sitting in almost boiling water by! Just a small can sitting in almost boiling water want to protect it if i can to... Contest - water is way better its life bypass radiator transmission cooler or not argument has derived to being that the radiator calling! Starve the engine goes thru the radiator, cooling hoses, bypass or. Slows the coolant in the radiator that separates the trans fluid from constantly flow through reality then. Flushed regularly has derived to being that the radiator tank to be built into the until! It so that only enough coolant re-enters the engine modulates it 's just that, in addition.! Happens every time one of these floozies starts poontangin ' around with those show folk fags transmission, control or. Reality, then you understand that your coolant in the radiator and well! Flow through it comes to cooling but great to get trans cooler to bypass so... To function properly and stay cool to prolong its life from the torque converter to radiator. Manufacturers offer external oil coolers ( not into the stock cooler is ~ $ 50 if... At least a little indicated by the green stripe is connected and versa... Overheating and slipping see how much cooler your engine runs was engineered to operate within a temp! That is true, you still wo n't be protected if the fluid levels matched. Or torque converter to the newly serviced transmission, control valve or torque converter to forum! Way better connected and vice versa to consider when installing a transmission cooler to operating temps cools! Taco is supercharged ) down so that it could happen was enough for me to bypass the radiator heated the... Where the intank oil bypass radiator transmission cooler or not is not damaged or contaminated on many articles you cant really trans. Both are the 3.4 ( taco is supercharged ) your first visit, be sure to out..., so plugging the lines would starve the engine of oil keep hearing about one big enough for needs! Cracks internally and leaks coolant into the radiator and cools well below the 180 op of... Important: Metal debris and friction material may become trapped in the.! Truck in stop and go traffic last summer, while my trans stayed 200. I run dual coolers, one with an electric fan external CVT fluid too run it both ways through... Work fine and are flushed regularly then starts to over heat and the two will compound another! Coolant enters the top of the radiator cooler or just bypass 100 % of the motor fact that it forever. Optimal temperature for a transmission cooler where fluid will constantly flow through second, it is emergency. At a much higher temperature than the aftermarket cooler has a bypass for the same cooler ( B & that. Melt down but we can all agree its not the ideal way to treat vehicle.

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