Moderator: volvite
Short answer - NO! Just read the tons of posts about that on this forum. Your PF ALREADY HAS an external cooler. The one in the radiator is problematic, and most likely ineffective.outback wrote:ok, first post for me. i just bought a 2006 pathfinder S and i'm now discovering this transmission/coolant issue. now if i do the bypass method does that mean the transmission no longer has a means for cooling? would i be better off adding an aftermarket transmission cooler?
forgive me if this issue has been beaten to death.
thanks for your input
SilverGhost, have you done any moderate/heavy towing with the by-pass having been done, and no additional transmission cooling provision?SilverGhost wrote:Short answer - NO! Just read the tons of posts about that on this forum. Your PF ALREADY HAS an external cooler. The one in the radiator is problematic, and most likely ineffective.outback wrote:ok, first post for me. i just bought a 2006 pathfinder S and i'm now discovering this transmission/coolant issue. now if i do the bypass method does that mean the transmission no longer has a means for cooling? would i be better off adding an aftermarket transmission cooler?
forgive me if this issue has been beaten to death.
thanks for your input
Geez, this has me thinking I should 'un-bypass' my rad...4x2 wrote:Just wanted to point out that the internal atf cooler in the radiator is actually quite effective at cooling the atf fluid according to this guy's data. For those that tow and off road heavy with the bypass, should install another atf cooler.
http://www.thenewx.org/forum/showthread.php?t=30287
That's some impressive data, but I will never have trans fluid running thru my rad again. I would add another external cooler or a cooling fan, or both. I have not done any towing yet and don't have a reason to very much, but I don't want to overheat the trans if I do. I do a fair amount of off-roading, so a fan would be the best thing for me.disallow wrote:Geez, this has me thinking I should 'un-bypass' my rad...4x2 wrote:Just wanted to point out that the internal atf cooler in the radiator is actually quite effective at cooling the atf fluid according to this guy's data. For those that tow and off road heavy with the bypass, should install another atf cooler.
http://www.thenewx.org/forum/showthread.php?t=30287
Yeah, good luck with that.disallow wrote: Geez, this has me thinking I should 'un-bypass' my rad...
Now that the cooler has been sitting empty for some time, I probably won't just hook it back up.BMXPath wrote:Yeah, good luck with that.disallow wrote: Geez, this has me thinking I should 'un-bypass' my rad...
Whereas no one has reported overheating problems after doing the bypass, there are more than enough reports of problems with the faulty cooler for those who did NOT bypass.
Go ahead and weigh out what you think is the best option... Especially since you have an '05 which is probably the most problematic year for the rad/ trans leak.
thanks NVRDONENVRDONE wrote:As far as towing with out the in radiator cooler, I tow a 19' boat that weighs 4200 #. I did the by pass 2 years ago & so far no problems. The trans fluid is still clean & has no burnt smell.
Yea simply doing the bypass is just swapping a problem for another. You even mention that your transmission fluid had a burnt smell to it. Excessive heat degrades transmission overtime, so problems may not show up for a while, but by then its too late.disallow wrote:Now that the cooler has been sitting empty for some time, I probably won't just hook it back up.BMXPath wrote:Yeah, good luck with that.disallow wrote: Geez, this has me thinking I should 'un-bypass' my rad...
Whereas no one has reported overheating problems after doing the bypass, there are more than enough reports of problems with the faulty cooler for those who did NOT bypass.
Go ahead and weigh out what you think is the best option... Especially since you have an '05 which is probably the most problematic year for the rad/ trans leak.
But I may go the route of pre-emptive replacement of the rad with a Spectra Premium.
t
disallow wrote:After letting my drained trans fluid settle for a few days, I can see that its pretty dark, and it also has a bit of a burnt smell to it. Probably from towing my gargantuan trailer in high winds when the TC wouldn't lock up. I'm also by-passed, with no additional cooler other than the factory air/oil cooler.