2006 Nissan 4.2L Turbo Intercooled (Running on problems)

Cant help with your prob - BUt i have the 2000 4.2 TDI and almost 300 K and NONE of the issues you describe - i was thinking of updating .... your post has made me rethink ......

Boc

G/Day Matyhew

I had a Toyota some time back that had a similar problem, re running on, they found the problem in the Fuel Injector Pump, apparently there was a small valve or something that wasn't seating properly every now and again it would run on, and I would have to stall the truck in gear to stop the motor, I had the pump repaired and that fixed the problem.

Cheers
Daza

Hi Matthew.

I don't know where you are but suggest you find a new dealer/stealer
It is a very common problem with a hotline fix available
If you are in a city dealer they have probably never seen a 4.2

Donks1

Matthew, if it were my new car I would be really ticked off. Personally, I'd be taking it to a diesel specialist and getting them to report on it. Hopefully they find the faults. Then I'd take it back to the dealer I bought it from and present them with a copy of the report. I'd be taking the service manager and a techo for a long drive and turning the thing off as many times as I need to until it happens. Basically, I'd hold them to ransom and make a pest of myself. Nothing to lose.

Maybe a call to Nissan might be the GO. Followed up by a call to your local consumer affairs department. Not a good advertisement for Nissan IMO.

Good luck with getting it fixed - it'd be interesting to hear what the cause is. I'd really try a diesel specialist in your area, one that comes with good recommendations.

Cheers

Louie

The running on sounds like it may be pump related...timing or as someone else suggested a seal not properly seating. Either way any diesel specialist should point you in the right direction. One of mine tends to do this when it is turned off not long after a cold start, but nothing to worry about in my instance as it does not do it when at running temps.
Get a turbo fitter to look at the turbo and give you his opinion about the amount of oil around your turbo and where it is coming from. Do you use oil between services?

Good luck with it and perservere with it, once bugs ironed out it should be sweet.
Trevor.

Shut off solenoid with gunk under the seat..
Happens in earthmoving gear quite often, they sometimes run for minutes until the fuel is starved enough.
Take it back and simply say "fix it".
Nothing to do with turbo or injectors.
If the engine is rotating, the pump has fuel, it will feed the injectors. If the injectors inject, the engine will run. Simple.. no fuel, no run, instant stop.
They can fix it if they really want to.
furph

Do you shut the engine off straight away or do you let it idle for 20 30 seconds to get some of the heat out from the combustion chamber.

Thas theory works with My petrol Turbo, but I have never owned a Diesel, so may be way of the mark.

BeingTurbo you should probably let it idle for a lot longer though but I'm sure you already do that.

Cheers.

Still in warranty , get Nissan to Dyno it - then fix it to specs.

Depending on you turbo oil leak it may be that which is causing the run on(oil in the intake being sucked into cylinder and firing).

Also on the rear of the injector pump is a fuel cut off solenoid. If the plunger is not seating correctly at switch off it may allow a small amount of fuel thru. Maybe ask Nissan to replace this item.

Matt

I had the problem with running on & Nissan did find the error from the ECU, it was the Throttle Position Sensor (I was also having the engine light come on rarely) Hasent done it since replaced.

Also if your turbo is spitting out that much oil it may run on from that.

Id try finding another dealer.

Hi Matthew
I've got a Series I 4.2, and at about 100,000km the turbo started leaking oil, and it was replaced under the extended warranty, no quibbles. About 2 months later, the new turbo started leaking oil, and that was also changed with no quibbles.
The run-on trouble sounds like a leaking seat in the fuel solenoid valve (this is the only thing that shuts off the diesel in a mechanical pump). Mine does it from time to time, Nissan looked at it when it was under warranty, but couldn't seem to fix it, and I gave up in the end, as it wasn't a big deal to me. And I guess that's what they were hoping I'd do. Trouble is, if you get a dealer that's mainly into changing oil in Pulsars, you're gonna run into trouble if their apprentice has to diagnose a dicky diesel.
I'd be taking out the extended warranty if you haven't already done so, and also looking for another dealer. Bad service certainly leaves a bad taste in one's mouth - the 4.2 GU is basically a very sound vehicle and it's a pity when the dealer can't properly support the product.
Good luck,
Gerry