Weird Problem with Nissan Patrol 4.2TD

It could possibly be the csolu on the rear of the injector pump (happens on 100 series cruisers as well)

This is from the Nissan Patrol Forum

The solenoid you will be after is called the Csolu which I think stands for coded solenoid. I have just been through replacing mine from a lightning strike. You can get this solenoid seperate from Bosch mine was $650 (it was supplied through the Nissan dealer) if the dealer you see tells you they can't. Nissan don't sell the pump and solenoid seperately only together I was quoted $7000.
As much as I hate to suggest this you should look at taking it to a Nissan dealer and get them to plug into the Nats system the diagnosis plug is below your steering wheel. They can tell you what component is playing up. You have said that your nats light has been staying on so there is something wrong with the nats system. The nats system on the TD42TI comprises of the key reading antenna (in the steering column), the Immu (the computer which is behind the aircon evaporater on the passenger side pretty impossible to get to without ripping out the dash) and the Csolu (on the pump). You do have a option though if you don't want the nats system. You will need to remove your pump and drill out the 3 anti theft bolts holding the Csolu on. When removed the standard fuel solenoid is below it, there are 3 wires going to the Csolu brown, green and black (I think bad memory). The green is from the Immu and sends the signal to the Csolu that the right key is in the ignition and the car can be started. I think there should be a brown and black wire going into the standard fuel solenoid (or possibly just the brown like my old GQ as they don't have Nats I didn't see my solenoid). Just wire the brown and black (if it has a black) wires to the fuel solenoid and leave the green wire as there will be no place for it just make sure it can't be grounded. The brown wire is 12v straight from the ignition, the black wire is an earth. You can check that it is working before you put the pump back in by turning on your ignition and the fuel solenoid should activate. This is just a suggestion though, it's entirely your decision if you decide to do it. I'm sure there will be others on the forum who might suggest what I have written is wrong or correct.

Regards Don

If you have a spare key try it, my partner had a similar problem with her
honda, after playing around with the immobiliser I noticed the key symbol
on the dash was not going off, grabbed her spare key and tried it car started

Chip in key had gone to god.

Cheers
Leigh

I had a similar problem some years ago. I disconnected the battery(s) completely and then re-connected them and the problem was solved.

I hope that your problem is this simple.

Best of luck.

Hi,
Had similar with my 2000 4.2. Wouldn't start,bled the fuel, called out the R.A.A.
He asked if we had a spare key tried that and motor fired up,seems the chip or whatever it's called had fallen out of the key. We later found it on the ground in front of store,glued it in and still working..

Wifes Dogwooo wouldn't start the other day.
Went to the closest Holden dealer on a tilt tray.
Thousands to fix the immobilizer or a hundred for the diagnosis and the by-passing of it.
New immobilizer is worth more than the car
Tilt Tray driver was on first name terms with the service manager.
I asked him why and he said he always bringing in new Cruzes and Captivas that have broken down.

Hi Wamuranman,

I had an issue like that a while ago. Got road side assist out and they just bypassed the immobiliser and never had any difficulties after that. May have been lucky that roadside assist were prepared to bypass it but it didn't take him very long and patrol just fired straight up after it was bypassed.

Zook

Have you solved the problem yet Wamuranman? While we have not had trouble with the immobilising system in our 3 litre Nissan Patrol, we have with the after market immobilisers in other cars. Taking the fuse on the immobiliser out and replacing it resets the after market immobiliser in my car when it plays up.

Motherhen

Thanks to all who replied and provided valuable information.

The problem is not fixed yet Motherhen as yesterday was a day of phonecalls and research.
But we have pulled the plug at getting Nissan to fix it by pulling the dash out etc etc.
On Monday we are having it towed (3rd time) to a diesel injector specialist at Caboolture who has done the bypass on others in the past.
(thanks to Ian W1 for the info but Goodna is a bit far from where we are, thus my time yesterday reseraching out injector specialists on the northside who have done this bypass).
The injector pump comes off to fix and some electrical work. Estimated cost about $500. (but a lot cheaper than the Nissan dealership alternative).
Apparently its a lot more common in the 4.2TD patrol than I thought and will probably occur more often as the vehicle ages.
The good news for me is that with the bypass the problem can never re-occur in a remote area and let us down. We have been so lucky this problem did not occur 2 weeks ago when we were 120km south of Winton towing our caravan to Opalton to go fossicking. We did not even have mobile coverage there.
We were so lucky ... the failure occurred the 3rd time the vehicle was started after we got home last Sunday!!!!!.

Cheers