TexasPthFnder95 Posted October 17, 2010 Share Posted October 17, 2010 (edited) I have a freshly rebuilt auto transmisson (30,000mi) in my 95 pathy and for the past couple of months its been making a strange sound when slowing down and sitting still even in park. Sounds like the torque converter? Also over the summer the truck devoloped a vacuum leak over the summer but i cant seem to find the leak... could this be affecting the transmisson?? I didnt see anything loose or off on the transmisson Edited October 17, 2010 by TexasPthFnder95 Link to comment Share on other sites More sharing options...
Precise1 Posted October 18, 2010 Share Posted October 18, 2010 What condition is the fluid in?? Do you have an external tranny cooler installed and is the stock radiator cooler bypassed. Why was the tranny rebuilt 30k miles ago? What kind of strange sound?? Does it sound like a hyena or like an egg being dropped? B Link to comment Share on other sites More sharing options...
TexasPthFnder95 Posted October 18, 2010 Author Share Posted October 18, 2010 What condition is the fluid in?? Do you have an external tranny cooler installed and is the stock radiator cooler bypassed. Why was the tranny rebuilt 30k miles ago? What kind of strange sound?? Does it sound like a hyena or like an egg being dropped? B Its like a humming and small griding sound when acclerating or slowing to a stop. And it has the stock tranny cooler and it was rebuilt due to reverse faliure at 196,000k but every filter line seal gear everything was replaced only the bell housing is stock. And the fluid is still red but im flushing the tranny and changing it soon... Link to comment Share on other sites More sharing options...
Kyle94 Posted October 19, 2010 Share Posted October 19, 2010 (edited) i wonder if an auto has the same fill plug problem that makes the bearings on the input shaft and such go bad like my Manual?? just told they weren't so ignore that... Edited October 19, 2010 by SexJelly Link to comment Share on other sites More sharing options...
Precise1 Posted October 19, 2010 Share Posted October 19, 2010 Ok, what I have heard is that when reverse fails, it is due to lack of fluid pressure since it requires the most. It is the classic failure mode for pathfinders and may be caused by the stock radiator cooler clogging and the tranny overheating/starving. If the radiator cooler is not (replaced or)* bypassed, it will happen again. *cheaper to bypass Moving on, did you mention any bearings being replaced? Are you certain it is coming from the tranny or could it be other drive train parts or rotational components?? I've been fooled by signs before... B Link to comment Share on other sites More sharing options...
TexasPthFnder95 Posted October 20, 2010 Author Share Posted October 20, 2010 (edited) Ok, what I have heard is that when reverse fails, it is due to lack of fluid pressure since it requires the most. It is the classic failure mode for pathfinders and may be caused by the stock radiator cooler clogging and the tranny overheating/starving. If the radiator cooler is not (replaced or)* bypassed, it will happen again. *cheaper to bypass Moving on, did you mention any bearings being replaced? Are you certain it is coming from the tranny or could it be other drive train parts or rotational components?? I've been fooled by signs before... B Well the problem is fixed the fuel pressure regulator was causing it i dont know how but i fixed that and the transmisson is silent now but im still flushing the tranny and changing the fluid and i already changed the stock radiator and tranny cooler and lines but i do have a heavy duty external cooler in my room ready to be installed easy to do? Best place to mount? Edited October 20, 2010 by TexasPthFnder95 Link to comment Share on other sites More sharing options...
Precise1 Posted October 20, 2010 Share Posted October 20, 2010 Cool, that was probably one of the cheapest (and strangest) tranny fixes I have heard of. The best place for a tranny cooler is in front of the radiator and condensor. B Link to comment Share on other sites More sharing options...
TexasPthFnder95 Posted October 20, 2010 Author Share Posted October 20, 2010 Cool, that was probably one of the cheapest (and strangest) tranny fixes I have heard of. The best place for a tranny cooler is in front of the radiator and condensor. B I know My only guess was the truck was getting to much fuel or something and it was messing with the tranny. So the best place for the cooler is directly behind the grille? And is there any precautions i should take and is this a complicated project? Im really good at fixing repairing customizing and modifying cars but right now i cant have a project tthat lasts more than a weekend Link to comment Share on other sites More sharing options...
TexasPthFnder95 Posted October 20, 2010 Author Share Posted October 20, 2010 i wonder if an auto has the same fill plug problem that makes the bearings on the input shaft and such go bad like my Manual?? just told they weren't so ignore that... I fixed it. It was the fuel pressure regulator i have no idea why it affected the tranny but it did Link to comment Share on other sites More sharing options...
Precise1 Posted October 20, 2010 Share Posted October 20, 2010 I know My only guess was the truck was getting to much fuel or something and it was messing with the tranny. So the best place for the cooler is directly behind the grille? And is there any precautions i should take and is this a complicated project? Im really good at fixing repairing customizing and modifying cars but right now i cant have a project tthat lasts more than a weekend http://www.nissanpathfinders.net/forum/index.php?showtopic=23072&st=0&p=411924&hl=cooler&fromsearch=1entry411924 There is more info that you can dig up if you search but it is pretty straight forward... B Link to comment Share on other sites More sharing options...
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