fearkobe Posted January 10, 2014 Share Posted January 10, 2014 I have a 95 Nissan pathfinder and i was driving home last night on the hwy and noticed my rpm went to 3500 rpms. Felt like it went out of over drive. I press the over drive no change wHen i turned it off. I probably did a bad thing i put in to neutral and shut it off and it went back to normal. No high rpms. Drive it this morning for my paper route drive fine. I did post awhile ago about when i get of the freeway and stop at a stop sign it hesitates to move but once you shut it off start it back up shifts fine. I'm hoping i don't need a rebuilt anytime soon being my other car in the shop. I have 234k miles on the path. Thanks for reading my post. Link to comment Share on other sites More sharing options...
fearkobe Posted January 10, 2014 Author Share Posted January 10, 2014 Btw i did a fluid change sometime last year. Link to comment Share on other sites More sharing options...
Towncivilian Posted January 10, 2014 Share Posted January 10, 2014 Another drain and fill wouldn't hurt if it's been a year. Link to comment Share on other sites More sharing options...
fearkobe Posted January 10, 2014 Author Share Posted January 10, 2014 It has less then 20k on the fluid Link to comment Share on other sites More sharing options...
Slartibartfast Posted January 11, 2014 Share Posted January 11, 2014 Unless you've been doing a lot of towing, the fluid smells burned, and/or your last fluid change came out black and chunky I doubt the fluid's the issue. Wouldn't hurt to recheck the level (warm), apparently these act up if overfilled. How's reverse holding up? Limp mode for these transmissions is to lock into third, so if the trans computer saw something weird when you were in overdrive, it may have just shifted down into third by default. Then you pull off the highway, stop, and try to get going again, and it's still in third, which I think is probably the hesitation you're feeling. Restarting clears the code and you get gears again. I don't remember what all puts it into limp mode but I imagine anything from overheated fluid to slipping clutches to a loose connector could do it. IIRC a few guys have had theirs go into limp mode from doing doughnuts in the snow... the computer doesn't know wtf is going on and assumes the transmission is broken. Because yours happens while cruising it does sound like something's wrong. The next time it acts up, before shutting it off (if you can), check it for codes (the procedure's in the service manual, basically the light in the Power Mode switch flashes to tell you what's up). Hopefully that'll point you to the circuit or component that's malfunctioning. Link to comment Share on other sites More sharing options...
FeelthePathos95 Posted January 11, 2014 Share Posted January 11, 2014 I have had same issue and yes, your tranny is freaking out over something when you hit highway speed and going into fail safe. Hope you have better luck than me. Have taken it to two indys and a dealer and no one can figure it out. Last guy finally just changed the fluid and told me not to use overdrive. That works for me as I drive it just in the city for now and plan to replace vehicle soon anyway due to frame rust. It shifts fine until you ask it to do more than 50-55, then it goes that fast for a bit and goes to fail safe. Link to comment Share on other sites More sharing options...
Alkorahil Posted January 11, 2014 Share Posted January 11, 2014 Overfilling the transmission is as bad as underfilling it. to start with, it will make the torque converter unhappy. 1 Link to comment Share on other sites More sharing options...
fearkobe Posted January 11, 2014 Author Share Posted January 11, 2014 Hadn't done it in the past couple days. I'm assuming when its cold going on the highway the overdrive doesn't kick in till its fully warm. Link to comment Share on other sites More sharing options...
fearkobe Posted January 11, 2014 Author Share Posted January 11, 2014 I will check the fluid levels today. I have the Lucas transmission oil in there.thanks for the replies Link to comment Share on other sites More sharing options...
joejk1 Posted January 11, 2014 Share Posted January 11, 2014 i have a 93 auto and it was doing the same thing,it was the tps. Link to comment Share on other sites More sharing options...
FeelthePathos95 Posted January 11, 2014 Share Posted January 11, 2014 Tried the Lucas in mine and it did nothing. Someone else on the board called it worthless "gorilla snot.'' Had me laughing all day about that. Link to comment Share on other sites More sharing options...
ahardb0dy Posted January 11, 2014 Share Posted January 11, 2014 Over drive will not engage until everything warms up, it says that in the owners manual 1 Link to comment Share on other sites More sharing options...
Towncivilian Posted January 11, 2014 Share Posted January 11, 2014 Tried the Lucas in mine and it did nothing. Someone else on the board called it worthless "gorilla snot.'' Had me laughing all day about that. That was me. Lucas' transmission (and engine oil) additives are worthless. But Lucas does have their "own" oil and transmission fluids which are likely blended by Warren Performance Products (i.e. same as most store brands). Link to comment Share on other sites More sharing options...
FeelthePathos95 Posted January 11, 2014 Share Posted January 11, 2014 Kudos, sir! That one made my day. Link to comment Share on other sites More sharing options...
fearkobe Posted January 11, 2014 Author Share Posted January 11, 2014 My reverse is a little slow. But not bad. Link to comment Share on other sites More sharing options...
fearkobe Posted January 11, 2014 Author Share Posted January 11, 2014 I think its been like that since i bought it. Link to comment Share on other sites More sharing options...
fearkobe Posted January 11, 2014 Author Share Posted January 11, 2014 I did notice that when the live drive is not engaged its around 2500 bit that one night was at 3500 want slipping felt like a lower gear. Link to comment Share on other sites More sharing options...
Slartibartfast Posted January 12, 2014 Share Posted January 12, 2014 I asked because reverse is usually the first to fail in these transmissions. If it was slipping I'd suspect that overdrive might be slipping too and triggering limp mode. Could still be that but it could be lots of other things too. Any luck getting a code? Live drive? I think mine sits somewhere around 2500 at 60 with the overdrive on, on level ground, closer to the 3500 when it downshifts to third (I don't spend much time going 60). Torque converter lockup factors into the RPM vs speed as well, but I don't understand it well enough to explain it. Link to comment Share on other sites More sharing options...
fearkobe Posted January 12, 2014 Author Share Posted January 12, 2014 When I'm doing 65 it is just under 2500 rpm. More like 2200. Link to comment Share on other sites More sharing options...
Slartibartfast Posted January 13, 2014 Share Posted January 13, 2014 Sounds about right. Link to comment Share on other sites More sharing options...
Alkorahil Posted January 13, 2014 Share Posted January 13, 2014 Over drive will not engage until everything warms up, it says that in the owners manual That is very true it does! It is always good to let your vehicle warm up in the morning for at least a couple of minutes. 'jump in start it up and go' is not good long term for your poor truck! You should let it warm up if it has been below freezing outside overnight! Link to comment Share on other sites More sharing options...
fearkobe Posted January 14, 2014 Author Share Posted January 14, 2014 I wait for the idle to go down. My gauge is only 1/4 when i go up hills its almost half way up it was going too almost 3/4 just going up hills. 1/4 is where it stays at on flat driving. Link to comment Share on other sites More sharing options...
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