keepwalkn Posted December 2, 2012 Share Posted December 2, 2012 hi guys, just joined up...hoping there is someone that can assist... sick of my terrano locking up as soon as you are "cruising" above 60km/h. it won't unlock until you really squeeze the throttle and then it revs it's nuts off. what I want to do is put a resistor in the speed sensor circuit to the auto trans ecu to make the ecu think that 75-80 is 60 and then lock it up... the td27 simply doesn't have the torque to pull small hills at 60/1600rpm. can this be done? any help would be appreciated - wiring diagrams etc. and: already adjusted the TPS so that the shifts occur at a higher RPM. the converter lockup is controlled by speed and trans temperature and lastly throttle position. the auto kick-down is activated by a switch on the accelerator pedal - you can hear it click as you press the pedal down. does the auto ecu see the speed signal as voltage? I want the lockup to work like normal in terms of unlock and trans temp, so those signals won't change, I just want to modify the speed the trans ecu sees... Link to comment Share on other sites More sharing options...
Slartibartfast Posted December 3, 2012 Share Posted December 3, 2012 There's a thread somewhere on here where a guy put a switch inline with his torque converter lockup wire. He was having the same problem you were, and was really happy with his fix. Something about a blue wire. I'll look later and see if I can find it again. Link to comment Share on other sites More sharing options...
Slartibartfast Posted December 3, 2012 Share Posted December 3, 2012 Found it: http://www.nissanpathfinders.net/forum/topic/999-cool-easy-auto-tranny-mod/ Link to comment Share on other sites More sharing options...
keepwalkn Posted December 3, 2012 Author Share Posted December 3, 2012 that mod is ok - but it doesn't work 100%... anyone have an idea as to why my auto locks up so early? Link to comment Share on other sites More sharing options...
Willfly4money Posted December 4, 2012 Share Posted December 4, 2012 Sorry, I don't have a terrano manual but fwiw, a VG-30E 4WD pathfinder with 4.625 rear end is supposed to lock up at 64-69 mph at half throttle. The book only gives lock-up/ lock-off values at full and half throttle, thus, during troubleshooting you must run the truck at those throttle settings to find anything. I wish I could help but I know nothing about diesel terranos. Link to comment Share on other sites More sharing options...
Towncivilian Posted December 4, 2012 Share Posted December 4, 2012 Have you tried changing the fuel filter and cleaning the MAF? I've read anecdotes where this has helped shifting, oddly enough. Link to comment Share on other sites More sharing options...
keepwalkn Posted December 4, 2012 Author Share Posted December 4, 2012 Have you tried changing the fuel filter and cleaning the MAF? I've read anecdotes where this has helped shifting, oddly enough. It doesn't have a MAF and I will give it a full service on the weekend Link to comment Share on other sites More sharing options...
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