Technical 2006 Ducato auto 2.8 JTD x244 engine cutting out

[Ocwobio]

I'm just wondering if the camshaft and crankshaft position sensors are losing coherence for some reason on initial start? Might be due to failing sensor, wiring issues, or supply voltages, possibly due to wiring issues etc. as stated? Or maybe something similar is happening and ECU is falsely detecting injection advance (cold start) going above or below the nominal required value, perhaps because of the foregoing?

 

[Communicator]

I'm just wondering if the camshaft and crankshaft position sensors are losing coherence for some reason on initial start? Might be due to failing sensor, wiring issues, or supply voltages, possibly due to wiring issues etc. as stated? Or maybe something similar is happening and ECU is falsely detecting injection advance (cold start) going above or below the nominal required value, perhaps because of the foregoing?

Unfortunately, reading eLearn - Descriptions - 10 Engine - Fuel system, it states that the camshaft sensor is only used in the initial synchronisation stage. My understanding is, that when starting the engine, the camshaft sensor signal is used to inform the ECU as to which stroke the number 1 piston is on, and is not used subsequently.

 

[Ocwobio]

Unfortunately, reading eLearn - Descriptions - 10 Engine - Fuel system, it states that the camshaft sensor is only used in the initial synchronisation stage. My understanding is, that when starting the engine, the camshaft sensor signal is used to inform the ECU as to which stroke the number 1 piston is on, and is not used subsequently.

That might help verify the camshaft sensor function is OK then. Further in to the chain we go..... it might still pay to check as far as possible the correct cold start/ fuel heat requirements. But, if I am correct, the OP lives somewhere that is much warmer currently than the UK. And the cold start system is known to be pretty cold blooded in its wake up preferences!

I once had a Renault Laduna diesel that had crank sensor failure, and some times it would start first go, and always ran 100% when having done so, to not wanting to fire at all;so unpredicctable.

That one, however, did have a glowplug system, and did not initially fire and die, it either lit up properly or it didn't do so at all. Mercifully, it was a quick and cheap fix, but caused no end of so called experts to be baffled!

 

[corcai]

Key lock solenoid is on the ignition

 

[IceVovo]

firstly...thank you for your suggestions.
All were good.


Update...

I disconnected the Fuel Filter Housing.
Completely drained the fuel. No water detected. Diesel appeared good.
Note. This required disconnecting Water Sensor for the fuel Housing.

Sensor may be faulty as there is a Water in Fuel ON in MultiECUScan(MES).\
Also a Water in Fuel Light On. But light is not on the dash.
So it is inconsistent with MES.


I put a new fuel filter cartridge in.
Torque up to 30 Nm using special vice tool.
Reinstalled housing in van and reconnected fuel lines and sensors.

Then I cleared fault code using MES.

Primed Fuel pump until gurgling stopped.
Tried to start VAN. Same issue. Engine cranks over. Engine fires once then

dies.

Same warning in Parameters.
Water in Fuel resent
Water in Fuel control Light: ON

...but the light is not on the dash.
Sensor may be dodgy?


KEY LOCK SOLENOID DTC thrown in Gearbox ECU again.

The Ducato came configured with the ability to remove the key from ignition

in neutral. But made a series of beeps to warn driver.
SO I thought Fiat disabled the Key Lock Solenoid feature and provided warning?
...I could be wrong?
...anyway...I need to check this and eliminate.


Next Steps.

I will unplug the water in fuel sensor and see if it changes the parameters in MES. I want this concistent. Need to see this value change.

Also concerned about the glow plug relay.
Tried to test this using the Actuators section in MES but I didn't see the response I was expecting.
In the parameters screen It says ....

Glow Plug Relay Test: Not OK


I will investigate actual Keylock Solenoid under ignition barrel?
Would that make the ECU stop the engine?
...need some time to see how to get to it....and test it?
corcai

I will check out that doc you attached .


Thanks for all your suggestions so far.

I appreciated all of them and will work through them.

I will probably start at the Key Lock Solenoid
and ignition barrel area....followed by the water sensor.


Might be several days.

 

[IceVovo]

Success update....

Thanks to everyone for their suggestions.


Solved!


I have discovered the issue with help.
My brother was visiting so I had a 2nd pair of eyes. He is a mechanical engineer.

whilst I was in the cab turning over the engine, he was viewing the engine bay.

He spotted some hoses in the engine bay were collapsing to flat.
...you needed a second person as the hoses would return to normal after the

engine snuffed.
One person could not see it visually whilst starting the van. 2 people needed.


The hoses, 2m from the turbo to the intercooler then to the inlet manifold.
Collapsing, they would surely choke the engine.
It was pretty obvious to the trained or untrained eye.


I disconnected the hose from the airbox to the turbo.
I expected it to be filled with water.....or the turbo?

Before....I only checked by putting a flexible hose down the pipe with airbox removed and felt no blockage.
I did check the airbox and airfilter for rat/mice damage. None. Nada. Zilch.


Anyways, there was leaves and sticks at the bottom of the turbo intake hose.
It looks like a critter has tried to nest within my turbo hosepipe...when I had

the airbox out!
I did not take it fully off before as it had a funny clamp.(replaced clamp now)
So cleared out the nest out of the pipe!!!

Lucky something didn't slither out! lol



Thanks for all the suggestions.


Also...Engine starts and runs first go now.
I put MES on and checked values.
The Key Lock Solenoid error still exists in the Auto ECU. (Might be factory setting?)

Water in Fuel code still present in MES also.(maybe sensor gone?)


Checking running values in MES now.

Once again...Thank you all.
On a +ve note....I think this zeroed me in on that water leak. I won't be suffering that problem everytime it rains now. It should make my van very reliable! ...touch wood!

 

[Communicator]

The update is very much appreciated. I am very pleased that your engine is running again.

 

[Ian Webber]

Success update....

Thanks to everyone for their suggestions.


Solved!


I have discovered the issue with help.
My brother was visiting so I had a 2nd pair of eyes. He is a mechanical engineer.

whilst I was in the cab turning over the engine, he was viewing the engine bay.

He spotted some hoses in the engine bay were collapsing to flat.
...you needed a second person as the hoses would return to normal after the

engine snuffed.
One person could not see it visually whilst starting the van. 2 people needed.


The hoses, 2m from the turbo to the intercooler then to the inlet manifold.
Collapsing, they would surely choke the engine.
It was pretty obvious to the trained or untrained eye.


I disconnected the hose from the airbox to the turbo.
I expected it to be filled with water.....or the turbo?

Before....I only checked by putting a flexible hose down the pipe with airbox removed and felt no blockage.
I did check the airbox and airfilter for rat/mice damage. None. Nada. Zilch.


Anyways, there was leaves and sticks at the bottom of the turbo intake hose.
It looks like a critter has tried to nest within my turbo hosepipe...when I had

the airbox out!
I did not take it fully off before as it had a funny clamp.(replaced clamp now)
So cleared out the nest out of the pipe!!!

Lucky something didn't slither out! lol



Thanks for all the suggestions.


Also...Engine starts and runs first go now.
I put MES on and checked values.
The Key Lock Solenoid error still exists in the Auto ECU. (Might be factory setting?)

Water in Fuel code still present in MES also.(maybe sensor gone?)


Checking running values in MES now.

Once again...Thank you all.
On a +ve note....I think this zeroed me in on that water leak. I won't be suffering that problem everytime it rains now. It should make my van very reliable! ...touch wood!

Hi, did you find the cause for the key lock solenoid code as I have the same problem ?