shelbyluvv Posted February 17, 2020 Share Posted February 17, 2020 I have heard of it happening but never had first hand experience with it. This the the pan from my 2006 TJ Unlimited. The trans cooler failed and this is the result. I flushed it with 12 quarts of fresh fluid and replaced the filter. I took it for a ride yesterday and got a CEL after about 30 miles and the pump started whining. I limped it home and ordered another round of fluid and a filter. When I dropped the pan (I added a drain plug for that reason) there was a little more Pepto in the pan. I dropped the filter and the oring on the cheap Advance filter had split. I put a new Wix filter in and took it on a drive. For the first few minutes the 3rd gear shift was rough and it had a shudder going into lock up. After about an hour she seemed ok. I pulled off on a side road and brake torqued the hell out of it. She went on to absolutely boil the rear tires. It has never done that before. I'm happy it is doing ok. I'm making payments on it for another year! Stay tuned for a future update with a golden twist... Link to comment Share on other sites More sharing options...
Jeep Driver Posted February 17, 2020 Share Posted February 17, 2020 I'm well aware of it. Frontiers, which I have, were notorious for this. $6K fail. If I were building a Jeep with an auto, if it mattered, the trans would never run through the radiator. Link to comment Share on other sites More sharing options...
Pete M Posted February 17, 2020 Share Posted February 17, 2020 blows my mind that a thing like that is even possible. why do they share a wall again? Link to comment Share on other sites More sharing options...
500 MJ Posted February 17, 2020 Share Posted February 17, 2020 So a cheap o ring caused all the issues or was there something up with the filter itself? More parts that can perform multiple functions means that there are less parts and $$$ required to make the end product, eh Jeep? I’m sure the complexity of the added steps helps them justify bringing it in for their monkeys to work on it at a dealer too. Link to comment Share on other sites More sharing options...
strictlyxjs Posted February 17, 2020 Share Posted February 17, 2020 One time my friends radiator started leaking so he went to pick and pull and grabbed a used one. It was bad and the water got in his tranny and took it out. He ended up grabbing a used tranny to swap in and it ended up not working because the wj tranny was 99 only. Turned into a huge fiasco. Link to comment Share on other sites More sharing options...
shelbyluvv Posted February 17, 2020 Author Share Posted February 17, 2020 So a cheap o ring caused all the issues or was there something up with the filter itself? More parts that can perform multiple functions means that there are less parts and $$$ required to make the end product, eh Jeep? I’m sure the complexity of the added steps helps them justify bringing it in for their monkeys to work on it at a dealer too. The cooler in the cheap replacement radiator that someone before put in failed first. That caused the trans to stop working. I flushed it and replaced the filter. The next day the pump was screaming again. I dropped the pan and pulled the filter and the oring on the filter split causing the pump to suck air. I flushed it again and replaced the filter. All is well now. Link to comment Share on other sites More sharing options...
500 MJ Posted February 17, 2020 Share Posted February 17, 2020 So this is a radiator issue or am I misunderstanding something here? Why could someone just not plumb the trans cooling into the radiator and run their own cooler separately like we have in the XJs and MJs. If the hookup at the radiator is absolutely necessary and can’t have one side of the wall left dry, why not just plumb it into the loop and fill both sides of the wall with coolant? Link to comment Share on other sites More sharing options...
shelbyluvv Posted February 17, 2020 Author Share Posted February 17, 2020 So this is a radiator issue or am I misunderstanding something here? Why could someone just not plumb the trans cooling into the radiator and run their own cooler separately like we have in the XJs and MJs. If the hookup at the radiator is absolutely necessary and can’t have one side of the wall left dry, why not just plumb it into the loop and fill both sides of the wall with coolant? Almost all automatic vehicles have a trans cooler in the radiator from the factory. When the cooler in the radiator fails you get one of two things that happen. 1) tranny fluid in your radiatoror2) coolant in your transmission. Mine was option 2.I bypassed the factory cooler and plugged the ports in the radiator so I can still drive the Jeep until this radiator is replaced. Link to comment Share on other sites More sharing options...
500 MJ Posted February 17, 2020 Share Posted February 17, 2020 Got it. Link to comment Share on other sites More sharing options...
FrankTheDog Posted February 17, 2020 Share Posted February 17, 2020 On my 2006 WK the transmission cooler and AC condenser are the same piece. If it starts leaking at the fittings on the cooler, replace the lines first. That fixed the leak on mine. Also, buy factory oem lines because they come in a four piece arrangement with a junction block in the middle that allows you to install the lines without dropping the front axle center section, much easier to install. Link to comment Share on other sites More sharing options...
shelbyluvv Posted February 17, 2020 Author Share Posted February 17, 2020 On my 2006 WK the transmission cooler and AC condenser are the same piece. If it starts leaking at the fittings on the cooler, replace the lines first. That fixed the leak on mine. Also, buy factory oem lines because they come in a four piece arrangement with a junction block in the middle that allows you to install the lines without dropping the front axle center section, much easier to install. I bypassed the radiator cooler totally. I put 250 miles on it so far and she seems happy. Link to comment Share on other sites More sharing options...
Pete M Posted February 17, 2020 Share Posted February 17, 2020 Saw your post on fb and so while I was at the junkyard saturday I picked up a trans cooler for my Libby. Link to comment Share on other sites More sharing options...
shelbyluvv Posted February 17, 2020 Author Share Posted February 17, 2020 Saw your post on fb and so while I was at the junkyard saturday I picked up a trans cooler for my Libby. Good idea Link to comment Share on other sites More sharing options...
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