NS Pajero DID auto issue

[criptik]

HI Guys new to the forum, have searched for something similar but have been unable to find. If it has been done before please point me in the right direction.

So my 2007 Pajero exceed DID auto has a strange habit of occasionally holding a gear until the engine revs out to around 3000 - 4000rpm and will then shift (with light throttle input) i recall it usually in 3rd. other times it shifts fine. I have changed the SCV for a hunting issue which it seems to have fixed but I was hoping that the SCV would fix the gear shift also (a fueling issue playing around with ecu then playing around with the trans i was hoping) but seemed to make no difference to that. Car has done 235000 kms and i had change the trans fluid not long ago but was doing it before then also.

you assistance and experience would be much appreciated

[spot01]

Try removing the battery lead for a few minutes to force the auto to "re-learn" its shift settings.

[oiler]

Try removing the battery lead for a few minutes to force the auto to "re-learn" its shift settings.

I have this same problem and just logged in looking for info on this fault. I will try this fix.

[criptik]

I have this same problem and just logged in looking for info on this fault. I will try this fix.

tried this just now, no doubt the transmission is smoother, did it once still but was just after i flogged it to enter traffic on the hwy so probably still needs to continue learning? didnt do it again after that but shift changes were not consistent

[oiler]

tried this just now, no doubt the transmission is smoother, did it once still but was just after i flogged it to enter traffic on the hwy so probably still needs to continue learning? didnt do it again after that but shift changes were not consistent

Yes I tried this last night took it for a run and could not get it to hold the gear as it was doing before. However have not driven it today to really test it. I was previously finding it played up a lot more during hot weather, so not sure if a night run was going to prove anything. I wont know till Friday, when I will be driving it again during the day, if the issue has been resolved.

[justcruizin]

Disconnect the battery and when hooked back up drive it in manual mode for a while so it learns the shift pattern you want.

[criptik]

I have this same problem and just logged in looking for info on this fault. I will try this fix.

So a bit of an update on the issue. It was absolutely terrible yesterday while driving to ppls houses for xmas. Decided to have another look this morning.
Here is what i discovered.

removed hose to the throttle plate. played around a bit with the throttle plate. I found i was unable to move the motor/plate. i sprayed it with some liqui moly carbon cleaner while running. after that tried a bit harder to move the plate while engine was off, finally got it to move and with engine running again it was making some little movements for what ever reason. which it didnt do previously.

secondly i pulled the hoses off the VGT solenoid removed the plastic valve looking thing before it and tried to blow through it. Was unable to blow through it easily, so i cleaned that also(Was then able to blow through it easily, also cleaned out the inlet to the VGT solenoid,

took it for a drive for about 30 mins and wow what a difference. engine had loads more power and shifted when it should (mostly probably still learning). I'm not sure if either of these helped specifically or it did it it self. but im happy its improved significantly

[Stoneman]

All sounds good!

It talks about freeing up the throttle plate in the manual somewhere as carbon can build up or something, it was some time ago I read it

Allowing the VGT get proper vacuum would definitely be helping

Hope it fixed it

[oiler]

So a bit of an update on the issue. It was absolutely terrible yesterday while driving to ppls houses for xmas. Decided to have another look this morning.
Here is what i discovered.

removed hose to the throttle plate. played around a bit with the throttle plate. I found i was unable to move the motor/plate. i sprayed it with some liqui moly carbon cleaner while running. after that tried a bit harder to move the plate while engine was off, finally got it to move and with engine running again it was making some little movements for what ever reason. which it didnt do previously.

secondly i pulled the hoses off the VGT solenoid removed the plastic valve looking thing before it and tried to blow through it. Was unable to blow through it easily, so i cleaned that also(Was then able to blow through it easily, also cleaned out the inlet to the VGT solenoid,

took it for a drive for about 30 mins and wow what a difference. engine had loads more power and shifted when it should (mostly probably still learning). I'm not sure if either of these helped specifically or it did it it self. but im happy its improved significantly

Hi I have now tested mine properly and it is still not shifting correctly after disconnecting the battery but does not seem to be misbehaving as much as before. Not knowing a lot about working on diesels, but not afraid to have a go, what is and where do I find this throttle plate?

Thanks

[Stoneman]

Hi I have now tested mine properly and it is still not shifting correctly after disconnecting the battery but does not seem to be misbehaving as much as before. Not knowing a lot about working on diesels, but not afraid to have a go, what is and where do I find this throttle plate?

Thanks

Have you checked your fluid level

Being over filled can cause problems as well.

[aussieintas]

Oiler.....throttle plate is directly to the right of the black plastic engine cover between that and the battery. You'll see a 3" approx black inlet hose coming up from the intercooler that attaches to the throttle inlet.....held on by a hose clamp.

[criptik]

Have you checked your fluid level

Being over filled can cause problems as well.

You made a good point so I double checked, mainly because I had recently change the pan oil, while hot and running level was spot in the mark so no problem with the level.
Played up a bit today after towing, shifted fine in sports mode. Might take it to mm for them to look at it.

[Stoneman]

You made a good point so I double checked, mainly because I had recently change the pan oil, while hot and running level was spot in the mark so no problem with the level.
Played up a bit today after towing, shifted fine in sports mode. Might take it to mm for them to look at it.

What oil did you use?

You need to be sure the correct fluid is used.

Sp3 from memory

[criptik]

What oil did you use?

You need to be sure the correct fluid is used.

Sp3 from memory

I used a full synth penrite with the sp3 rating. Car had the issue prior to changing the pan oil. I had originally hoped changing the fluid would help but didn't make any difference

[oiler]

Oiler.....throttle plate is directly to the right of the black plastic engine cover between that and the battery. You'll see a 3" approx black inlet hose coming up from the intercooler that attaches to the throttle inlet.....held on by a hose clamp.

Thanks found it all looks good there. It has been very hot here yesterday and today and it is really playing up but I am beginning to think its possibly related to engine more than an auto trans issue. Auto is not overfilled with fluid. I have taken note it appear to upshift at Bout 3200rpm but its not reaching that point appearing to run our of steam at about 3000 when it should be accelerating. Manual shift seesbrevs drop and all comes good for awhile. When cruising at 100kmh in 5th it seems to be running very rough. Any ideas where to look now?