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  1. W

    2012 st d40auto vibration in driveline on downshift.

    So the shudder on the downshift came back about a week after the mount was changed. So i took it to another transmission place who took live data from the tourqe converter. Looks like its the torque converter having a disengage issue. After driving it with him and learning more about when its...
  2. W

    2012 st d40auto vibration in driveline on downshift.

    So 3 days and 900 bucks later im still not convinced that its 100%. The transmission guys ended up putting an addditve in the trans to help the shudder to no avail. Then changed the trans mount which was quite compressed and worn but the guys think there is still a resonating sound coming from...
  3. W

    2012 st d40auto vibration in driveline on downshift.

    So the nav has been at the transmission specialist today. Last time i took it there we couldnt get it to do the vibration much on the test drive but this time he says its definately not right. He had another navara there today a year newer than mine and he says my nav is not comfortable at all...
  4. W

    2012 st d40auto vibration in driveline on downshift.

    Nah not rotation it wiggles up and down enough to make noise. The end into the front diff feels good just the one into the transfer case. Ill get it checked regardless so hopefully it fixes it
  5. W

    2012 st d40auto vibration in driveline on downshift.

    Jumped under the car this arvo and had a look at the front prop shaft... uni joint at the transfercase end definately has play in it so much that it feels like it could be the bearing in the transfer case too! Ill be booking it in for new unis and the bearing if its gone, fingers crossed its...
  6. W

    2012 st d40auto vibration in driveline on downshift.

    So today on the way to work it was quite frequent. Once over 60 - 65 kmh then slowing at lights etc shudder for a second or two befor each down shift. On the way home i drove it the entire time in sport shift mode or what ever its called using only up to 4th and NO shudders the whole way home...
  7. W

    2012 st d40auto vibration in driveline on downshift.

    I was under the impression that it was a 7 at since i bought it. When you.put it in the manual shift mode when on the highway it doesnt go above 5. So i called nissan and after speaking with 3 people who said it has a 7at, the parts dept checked with the workshop guys and decided they all have...
  8. W

    2012 st d40auto vibration in driveline on downshift.

    Thanks old tony Ill jump under tomorrow and have a look at both shafts, i was told the front shaft only spun when 4x4 was engaged so might need to look closer there. The vibration mostly occurs once its up in higher gear, driving around bumper to bumper it doesnt happen. It feels like it cant...
  9. W

    2012 st d40auto vibration in driveline on downshift.

    Hi everyone! First time poster long time reader of many threads. Had an ongoing problem with me yd25 2012 d40 st auto since i bought it nearly a year ago with 85000 on the clock. Im getting a vibration/ shudder coming from the driveline when the auto trans seems to be shifting down through...
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