bwyan Posted August 17, 2004 Share Posted August 17, 2004 I just bought a '95 Pathfinder. It has a brand new Nissan tranny and 90k on the motor. I have heard that these auto transmissions have filters that clog easily and as a result may destroy the tranny. Is this true? Is there anything that I can do to prevent this? -bounce- Link to comment Share on other sites More sharing options...
sw Posted August 17, 2004 Share Posted August 17, 2004 it not the filter its the oil cooler completely bypass the stock cooler get the biggest & best oil cooler possible from a local auto trans shop and use that instead! Link to comment Share on other sites More sharing options...
94extreme Posted August 18, 2004 Share Posted August 18, 2004 ...and perform a search for more info. this topic and installation have been discussed a lot... (search is in the second header down) Link to comment Share on other sites More sharing options...
ChromoTech Posted August 19, 2004 Share Posted August 19, 2004 Ive been having transmission overheating problems even though i got a aftermarket oil cooler hooked up and everything. the tranny gets so hot that it just stops working sometimes i could have my foot to the floor and it wont respond at all when im on the highway going up a hill is really bad. it feels like my Pathfinder weighs a million pounds any ideas?? I also came across a problem when i changed out the fluid....it was dark and purple due to the overheating :furious: Link to comment Share on other sites More sharing options...
sw Posted August 19, 2004 Share Posted August 19, 2004 chromo what condition is your trans in and how much air flow can get to the cooler? Link to comment Share on other sites More sharing options...
ChromoTech Posted August 19, 2004 Share Posted August 19, 2004 original tranny the oil cooler is huge at about 1 foot tall and about alittle more than a 1/2 foot wide. its infront of the radiator and the AC cooler Link to comment Share on other sites More sharing options...
94extreme Posted August 19, 2004 Share Posted August 19, 2004 you sure the oil is moving through the cooler? kinks, obstructions... and do you have enough? is the fluid just burned or is there heavy suspention? just wondering... Link to comment Share on other sites More sharing options...
BigMike Posted August 20, 2004 Share Posted August 20, 2004 im getting ready to put in a Holden 404 cooler, i think mine stock one is kaput. now my tranny wont shift, it will rev up to 5k rpm not shifting tilll i let off the gas. Imma do a fluid flush tomarrow. you guys have any idea what could be causing the super long shifts when its not in Power? Link to comment Share on other sites More sharing options...
94extreme Posted August 20, 2004 Share Posted August 20, 2004 if you're aproaching 100k and just putting the cooler on now, it may not be good news. Link to comment Share on other sites More sharing options...
BigMike Posted August 20, 2004 Share Posted August 20, 2004 im already at 114k, i think one of the soliniodes are shot... Link to comment Share on other sites More sharing options...
red-finder Posted August 20, 2004 Share Posted August 20, 2004 I put on the Hayden 679 tranny cooler and the B&M filter kit last month and I can tell a difference in the shifting, and the transmission and the engine temperature seem to be down. We have been having low 90 degree temps every day too. I would recommend adding the filter kit when doing the cooler add-on. It only takes a little more time and it only cost me $38 for it from Autozone. Now I have piece of mind with the filter that I can change regularly. I routed the lines from the tranny > filter > Hayden cooler in front of the condenser> to stock cooler > to transmission. I hooked up the whole system then took the line out of the stock cooler and put it in a bucket and had my wife shift the transmission and made sure there was a good flow of fluid out of the stock cooler before hooking it back up to the transmission. Here is the filter with the bracket I made. Link to comment Share on other sites More sharing options...
red-finder Posted August 20, 2004 Share Posted August 20, 2004 I can't get the pictures to post, but here's a link to my other post with them in it.Transmission Cooler and filter Link to comment Share on other sites More sharing options...
BigMike Posted August 20, 2004 Share Posted August 20, 2004 well i just got done hooking up the new cooler, i knew the old ones clogged easy but geez. i had almost no fluid come out of the stock cooler, like maybe enough drops to fill a bottle cap. Link to comment Share on other sites More sharing options...
BigMike Posted August 22, 2004 Share Posted August 22, 2004 alright, im wondering if any one has any ideas on this. i can have it in D and it will not shift when its supposed to, ill accelerate like normal but when its time to shift from 1st to second it will continue to rev untill i let off the gas and it drops RPMs then it will engage the second gear, same with 3rd. reverse is fine, i can drop it in 1st and run fine then manualy switch to second BUT it wont switch at that moment , it will still continue to rev till i let off the gas then it will engage the 2nd gear. any thoughts? i think its the solinoids, if it is how hard would you guys say it is to fix? :help: Link to comment Share on other sites More sharing options...
94extreme Posted August 22, 2004 Share Posted August 22, 2004 maybe you should look into running some diagnostics with the ecu... Link to comment Share on other sites More sharing options...
88pathoffroad Posted August 22, 2004 Share Posted August 22, 2004 Sounds like the shift solenoids are sticking... Link to comment Share on other sites More sharing options...
BigMike Posted August 23, 2004 Share Posted August 23, 2004 well im looking for some transmission diagnostic literature, and so far nothing. as for it sticking, how might i unstick it? Link to comment Share on other sites More sharing options...
88pathoffroad Posted August 23, 2004 Share Posted August 23, 2004 The solenoids are inside/under the valvebody of the transmission...unless you want to tear apart your exhaust and tranny to get to them, they're not a serviceable item. Sorry. Here's the link to the testing procedures... http://npora.ipbhost.com/index.php?s=&showtopic=1580 Link to comment Share on other sites More sharing options...
BigMike Posted August 23, 2004 Share Posted August 23, 2004 would it be something that a novice could do? or is it just time consuming? otherwise i gotta find a trans shop to work on it. ill run the ECU tests and see what comes up. thnx for the replys Link to comment Share on other sites More sharing options...
BigMike Posted August 24, 2004 Share Posted August 24, 2004 well i tested the ECU and go two things: battery low and everything ok. i think imma talk my buds dad into helping me check it out, hes ASE certified and i dont think he would mind, he did charge my friend 20bucks to put on his shorty headers. but this is alittle different that headers... Link to comment Share on other sites More sharing options...
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