Jardsoooo
Member
- Joined
- Jun 6, 2010
- Messages
- 106
- Reaction score
- 18
Hey guys
I was on the forum a while ago discussing the haphazard performance of my 2010 Thai build series 3 D40.
Thanks to all the usual suspects for all the thoughts and insights at the time.
Just thought I would pop back to report some interesting developments.
Basically over the past 3 or so years the truck has been a bit of a lottery in regards performance on any given day any given hour ( blank looks from the dealer - computer says its fine ) tho the base line performance has certainly been on the improve particularly past the 30k mark.
Last time here I had become convinced that the issues were due to a faulty ECU earth as I had, at the suggestion of forum member Dan, removed the earth strap, cleaned off the paint, put it back on and the old girl was behaving beautifully - more grunt, more power, much smoother.
Over the next few weeks tho she started to slip back a little and I eventually concluded that the instant perkiness I had experienced was probably due more the inadvertent ECU reset that would have occurred when the earth strap was removed.
None the less she never went back to the real sluggishness as previously and things like changing the fuel filter def helped.
Recently I had the turbo actuator valve replaced - AGAIN - under warranty and this time they replaced all the plumbing between the airbox and the turbo with a redesigned unit, along with related vacuum plumbing.
The truck def came back from the dealer a little perkier but as they also reset the fuel pump I don't know which is responsible.
Just before she went in for the operation she started seriously playing up - flat spots between gear changes, completely dying, hunting all over the place - still intermittent but becoming reasonably predictable.
This was in fact the reason for the afore mentioned fuel pump reset but it didn't help and today she went in for further diagnosis.
I was pretty much expecting the " computer says no " routine as usual so I was very pleasantly surprised when they called before 9am to say they were replacing the suction control valve ( as soon as it arrives from the moon or somewhere)
Unacceptable fluctuations in rail pressure !
Now this is pretty exciting as my reading on the matter was indicating that this valve is a prime candidate for being responsible for the variable performance
Valve goes in Saturday - cant wait.
BTW All this recent work is being taken care of by the genuine Nissan extended warranty and so far its working just like the factory one. Work done - nothing to pay.
Other matters: I changed the diff oil a while ago - it's an LSD - and what came out ( factory filled) wasn't much thicker than water. The 80/90 I put back in was more like honey. I'm hoping this will make the dif perform a little more like an LSD should. In the past it has def only been one wheel driving- even on wet grass.
I was on the forum a while ago discussing the haphazard performance of my 2010 Thai build series 3 D40.
Thanks to all the usual suspects for all the thoughts and insights at the time.
Just thought I would pop back to report some interesting developments.
Basically over the past 3 or so years the truck has been a bit of a lottery in regards performance on any given day any given hour ( blank looks from the dealer - computer says its fine ) tho the base line performance has certainly been on the improve particularly past the 30k mark.
Last time here I had become convinced that the issues were due to a faulty ECU earth as I had, at the suggestion of forum member Dan, removed the earth strap, cleaned off the paint, put it back on and the old girl was behaving beautifully - more grunt, more power, much smoother.
Over the next few weeks tho she started to slip back a little and I eventually concluded that the instant perkiness I had experienced was probably due more the inadvertent ECU reset that would have occurred when the earth strap was removed.
None the less she never went back to the real sluggishness as previously and things like changing the fuel filter def helped.
Recently I had the turbo actuator valve replaced - AGAIN - under warranty and this time they replaced all the plumbing between the airbox and the turbo with a redesigned unit, along with related vacuum plumbing.
The truck def came back from the dealer a little perkier but as they also reset the fuel pump I don't know which is responsible.
Just before she went in for the operation she started seriously playing up - flat spots between gear changes, completely dying, hunting all over the place - still intermittent but becoming reasonably predictable.
This was in fact the reason for the afore mentioned fuel pump reset but it didn't help and today she went in for further diagnosis.
I was pretty much expecting the " computer says no " routine as usual so I was very pleasantly surprised when they called before 9am to say they were replacing the suction control valve ( as soon as it arrives from the moon or somewhere)
Unacceptable fluctuations in rail pressure !
Now this is pretty exciting as my reading on the matter was indicating that this valve is a prime candidate for being responsible for the variable performance
Valve goes in Saturday - cant wait.
BTW All this recent work is being taken care of by the genuine Nissan extended warranty and so far its working just like the factory one. Work done - nothing to pay.
Other matters: I changed the diff oil a while ago - it's an LSD - and what came out ( factory filled) wasn't much thicker than water. The 80/90 I put back in was more like honey. I'm hoping this will make the dif perform a little more like an LSD should. In the past it has def only been one wheel driving- even on wet grass.
