[minoe]

Update
Thanks again to everyone contributing to this...
I did that test Alex. With the engine revved to 3000, If I pull the rubber tube off the turbo actuator bellows, the actuator arm moves ok. The boost pipe is hard too. I have a turbo boost gauge on the way. I intend connecting it up to the vacuum side so I can see if the surging is going on here. If not I can connect it up to the boost side to see if it is holding pressure there. It is a petrol engine gauge with both vacuum and boost.
At this stage I am wondering if I got a tank of bad diesel. There is a bit of diesel laundering going on here.
maybe the pump is shot. I checked with a friend who repairs pumps and he says that the engine would not start if the pump was shot. I will swop out the MAF sensor with a friends Navara over the weekend and see what happens.
Charlie

 

[minoe]

OK, swopped out the MAF sensor. No good.
The surging seems to be intermittent so it could be a bad connection somewhere.
After I came home after swopping the MAF sensor, I checked the ECU for codes.
Sure enough there was codes in there. I was getting what looked like
10 2 10 1 1 3 10 1 10 2 10 1 1 3 10 1 10 2 10 1 1 3 10
Does anyone know what these represent? Might point to the bad connection....
Another issue is the ESP light is on continually now. Truck has a test coming up.
Is there any solution for this? Someone said that it could be a bad earth but does anyone know where?

 

[Inoffski1]

The lack of power issue with mine re-occured this morning, managed to get it straight into the dealers with it still faulting. The service manager and senior tech had a look at it and it seems that the problem is either the vacuum pump or the pipe 'connector' between the vac pump and the boost control solinoid/brake servo

Awaiting a call from them with the final verdict

 

[minoe]

I blocked my EGR.
It was slow as usual for the first few miles but seems to have improved a lot.
The surging is GONE..... Must have been something to do with the EGR valve.
I am hoping the ECU is relearning the cleaner lungs, so keeping the fingers crossed.
Fuel mileage (according to the computer) is better too so looks positive.
Never found a conclusive reason for the problem.
Good luck with yours and keep us posted as the outcome.
Charlie

 

[Inoffski1]

Dealer phoned back at 3pm - 'All OK - was losing vacuum over the connector so we have re-routed the pipe and everything is OK now, your car is ready for collection'.

Collected car at 3.30, drove home all OK, set off out to parents at 5pm, no power.

Phoned dealer straight away, booked in for replacement of vac pump on Monday morning. Drove home from parents all back to normal again!!!!

Extra p!ssed off as we were supposed to be away with the caravan next week!!!!

 

[minoe]

Any update?
My heap is still going but seems to get it hard to reach the 125 I like on the motorway.
Seems to run out of steam when the pressure is on.
At least the smoke is gone. Didn't check MPG but computer says 11.5. It used to show c.8.8 usually
I have my chip connected up again and she's going better with that.
Have her shined up and going looking at possible replacements at the weekend. Pity, I like the truck overall.
With the price of parts and dealer attitude, I will be looking elsewhere this time.
They are probably all the same but...

 

[Inoffski1]

Any update?
My heap is still going but seems to get it hard to reach the 125 I like on the motorway.
Seems to run out of steam when the pressure is on.
At least the smoke is gone. Didn't check MPG but computer says 11.5. It used to show c.8.8 usually
I have my chip connected up again and she's going better with that.
Have her shined up and going looking at possible replacements at the weekend. Pity, I like the truck overall.
With the price of parts and dealer attitude, I will be looking elsewhere this time.
They are probably all the same but...

Vac pump on order - due in Monday

Truck sat on dealer forecourt all week - took until Wednesday for Nissan to agree to pay for the part and 75% of the labour, still not happy at that to be honest, fault was intermittant before warranty expired and they knew about it, followed dealer's advice and now will be stung with a £200+ bill.

Going to pick truck up soon, need transport over the weekend, so will take it back next week.

I am like you - truck was cleaned last weekend before I took it in on Monday, and I am going looking at replacements tomorrow, no faith in the motor or the dealer anymore. Sad, because I loved the truck.

First stop the Skoda dealers to look at the Superb 4x4 estate!!!

 

[minoe]

the Skoda dealers to look at the Superb 4x4 estate!!![/quote]

Now that's a nice car...
Pity they don't do auto diesel yet.
Even the std Superb 2WD estate ticks loads of boxes.
I need larger capacity to tow trailers.
In Ireland, we can convert big 4X4's to "vans" and use as company vehicles by just paying BIK at 5%.
Great if you are like me with no kids...
A car with seats is calculated at 30% of original cost. So 40k car adds 12k per annum to gross income before tax.
40k nice "van" adds 2k. P/a

 

[Inoffski1]

the Skoda dealers to look at the Superb 4x4 estate!!!

Now that's a nice car...
Pity they don't do auto diesel yet.
Even the std Superb 2WD estate ticks loads of boxes.
I need larger capacity to tow trailers.
In Ireland, we can convert big 4X4's to "vans" and use as company vehicles by just paying BIK at 5%.
Great if you are like me with no kids...
A car with seats is calculated at 30% of original cost. So 40k car adds 12k per annum to gross income before tax.
40k nice "van" adds 2k. P/a[/quote]

They do a DSG version, which I think is a version of automatic

We have no kids, but need something with a bit of oomph to tow a 1500kg caravan, with plenty of space in the back for 3 mad springer spaniels!!!