2005 Terrano 2 2.7TD stopped on motorway and won't start!

[-=Alex=-]

Hello guys,

I am new to the forum, guys on Vegetableoildiesel forum recommended me you as most knowledgeable people for Nissan cars, so please be gentle to newbie


I have a problem since last weekend, can't start my car, at all!

Car is 2005 Nissan Terrano 2, 2.7TD, 50K miles.
Runs 90/10 mix WVO/pertol, with heat exchanger to preheat fuel, 10" 5 micron filter and heated fuel tank.

I was driving from Inverness last weekend and suddenly on motorway engine just stopped. No knocking, poor acceleration etc, just off.
I changed fuel filter, tried to start - no success.
Next day we tried to start it by spraying brake cleaner into air intake - engine runs. Badly, but runs for few seconds.
Glowplugs were changed recently, but even if they are gone, car would start after 3-5 turns.
Fuel comes to IP, checked.
Banjo bolt filter is clean, checked
Fuses are OK.
Haven't checked relays thou...

Computer shows following error codes:
P0650 MIL.
P0215 Fuel Cut S/V1. (Fuel cut solenoid valve circuit is malfunctioning)
P1620 ECM Relay (An irregular voltage signal from the ECM relay is sent
to ECM.)

I found on forums that it may be fuel cutoff solenoid that is kaputt. Checked it yesterday - took it out. Piston fell off the solenoid body and I had to use shin pliers to get it off Injection pump. Visually looks OK. Not sure if piston should be separated from solenoid body.

Also tired to start engine without piston (to allow free fuel flow) - no success.

Now I suspect it may be crankshaft position sensor. Looks like it's also known problem on Terrano.

Yesterday I measured resistance between all all 3 wires on sensor connectro (see photo). Looks like it should have around 900 Ohms resistance between few of them, but it has either 0 or infinite resistance.

Any suggestions what can be wrong?

Thank you,
Alex

 

[Fez_uk]

have you drained the tank and filled it with diesel?

 

[rustic]

Hi Alex, let me be one of the first to welcome you to the club.
Your Terrano is a 2.7 tdi, as opposed to the 2.7 td, the earlier ones were non interrcooler, and had no crank position sensors or fault code storage.

Mine is the td, so I am not familiar with the fault codes, but sometimes the code doesn't always reflect the real problem.

Crank sensor can be an issue, but also the ignition switch contact block, which, can often be started after a few wiggles of the key.

I'm sure another member will be along shortly.
You are certainly on the right web site for these vehicles.

best regards,

Rustic

 

[Fez_uk]

ignition switch will likely cause the starter to not turn. I think it's turning over?

 

[clivvy]

id be surprised if its the CKP on an engine that young, unless it really has gone kaput but that would show a code.

 

[-=Alex=-]

Thank you guys,

1. Day before this failure I used 0.5 l Liqui Molly Diesel Purge - put IP intake and return into bottle an ran on idle for about 1 hour until fully burnt. Could it affect the fault?

2. No, I haven't drained the fuel, but as I have customised and heated fuel supply lines, I know that it's not blocked. I made temporary fuel intake from drum of normal diesel, so fuel supply is definitely OK.

3. Varous sources say that there may or may not be a sensor (I'll check that tonight), but firstly I have a connector which looks like the right one (see 1st photo), and secondly i got this picture from the manual. See, there is a sensor at the top of the engine.

Alex

 

[-=Alex=-]

ignition switch will likely cause the starter to not turn. I think it's turning over?

Yes, starter is working OK.
My suspicion is that ECU does not open timing valve on IP for some reason - I assume because it does not get proper signal form one of the sensors.
Is it possible?

 

[Fez_uk]

2. No, I haven't drained the fuel, but as I have customised and heated fuel supply lines, I know that it's not blocked. I made temporary fuel intake from drum of normal diesel, so fuel supply is definitely OK.

Is it a electric heater? If not, fuel will only be heated once the water temp goes up after a few mins running.

But as you tried straight diesel the problem points elsewhere.

 

[-=Alex=-]

Is it a electric heater? If not, fuel will only be heated once the water temp goes up after a few mins running.

But as you tried straight diesel the problem points elsewhere.

Yes, fuel line is inside insulated tube with hot coolant circulating around it. There are also 2 heat exchangers inside fuel tank, so I'm well prepared

It's definitely not fuel - injectors stay dry after cranking!! For some reason fuel does not pass through IP.

By the way, how to check Crankshaft sensor? Just move a piece of metal around it and see if resistance changes? Or move magnet?

 

[arcascomp]

Hi Alex, welcome to the 'other nuthouse'.

It certainly sounds like a sensor not informing the ECU to push fuel in - guys, does the fly by wire throttle have anything to do with this or am I barking up the wrong tree? Hopefully you'll get some more accurate suggestions than I've given you so far Alex.

 

[-=Alex=-]

Thanks mate.
I also downloaded maintenance manuals with all error codes explained, so hoe to get it all sorted soon. Pity they don't have a quick solution for "engine not starting", that would help a lot

 

[firebobby]

Hi Alex, I had a Volvo 850 TDI which did this, no warning, it just died, I left it a few minutes and then it started and was OK.
It did it again a few days later, so I called a mate who's a auto electrician, he had a look at the fuel pump relay, removed the cover and soldered a dry joint, no ,ore problems from then on.
Just a thought

 

[-=Alex=-]

I just checked crankshaft sensor. It's located somewhere on the gearbox as it's said in manuals, and its connector is under top left corner of the intercooler.
It shows 860 ohms on cool engine (should be a be around 900 ohms at 20 degrees).
Therefore, this sensor is OK.
Now will check relays and ground to ECU...
If you have any thoughts - please let me know

 

[-=Alex=-]

By the way, below is shut off solenoid piston with spring. Should it be a part of the solenoid, or can come off like on photo?
There are no cracks on the edge, so I don't think it broke inside solenoid
Please advise if I can simply insert it inside IP.

 

[briggie]

silly question , but have you cracked off a injector to confirm the presence / absence of fuel ?

 

[-=Alex=-]

I released 1st (control) injector's supply line and tried to start. There was no fuel coming off there. Therefore, pump is not pumping for some reason.

 

[briggie]

I released 1st (control) injector's supply line and tried to start. There was no fuel coming off there. Therefore, pump is not pumping for some reason.

ok ,just thought id ask ...... sometimes its the silly things we miss that is the problem

 

[-=Alex=-]

ECU relay if OK, works as it should.
Now will take front seat off and try to get to ECU...

 

[-=Alex=-]

Can it be immobiliser? How to check it?
Coded key fault?

 

[zippy656]

I run veggie with a heat exchanger too.

See other postes

So, mini filter.

Sucking air in?

Did it die or you turn off then not restart?