2.8 CRD Fuel Rail Pressure Sensor

[Hayesio]

Yes, that's the crank angle sensor wire coming out of the bell housing. You need to remove the transmission and clutch to replace it, I doubt that is your problem though - if that fails the engine wont start, let alone run. Have you got any P codes?

The best place to get parts for this engine is JNL in the UK - https://www.jnlengineering.co.uk/

Regards.

[Samfordjk]

Thanks Hayesio.

No codes have come up which is the weird thing. The engine will just stop at random times. Sometimes it might be months between cut outs. last week it happened twice in one day.
I cant seem to find a definitive cause. I have many suggestions of crank angle sensor, some for fuel rail pressure sensor, cam angle sensor and some have mentioned the in tank pump and blocked fuel filter.

I have changed out the filter, in tank pump and the cam angle sensor. She went 6 months without a hiccup then the problem came back.

Very frustrating - its an auto box

Steve

[Hayesio]

Does the engine flutter at all before stopping, or just a dead stop? Does it start up again without a problem - ie no lengthy cranking? Do you momentarily loose dash lights when it cuts out?

I reckon you'd probably get a fault code if it were the crank, cam, or fuel rail sensor. I'm thinking it might be more along the lines of an ECU fault.

[MidnightMods]

Originally Posted by Jeep'ers

Crank angle sensor..


https://www.sparesbox.com.au/part/go...SABEgJpiPD_BwE

Fuel rail..

Might be worthwhile getting it in from a US supplier..


Sent from my iPad using Tapatalk

That is not what the crank sensor looks like at all

Fuel rail can be picked up from any bosch reseller.
I have the crank sensors in stock at MidnightMods.com.au

I think it was you who posted on the FB CRD JK page about this issue?

[RLT]

Hi

Heres a pic of sensor on EBay over here in England
https://www.ebay.co.uk/itm/GENUINE-V...-/272844651350

[Samfordjk]

Originally Posted by Hayesio

Does the engine flutter at all before stopping, or just a dead stop? Does it start up again without a problem - ie no lengthy cranking? Do you momentarily loose dash lights when it cuts out?

I reckon you'd probably get a fault code if it were the crank, cam, or fuel rail sensor. I'm thinking it might be more along the lines of an ECU fault.

Thanks Haysio,

No warning lights that I have noticed. 1 minute you are cruising along at 80 kph and then nothing - engine just stops. Just Roll to a stop off the side of the road turn the key to off then restart and continue on our way.

It has happen at roundabouts - VERY SCARY and in the driveway at essentially zero Kph.

At the moment we have totally lost confidence in the car until we get a fix whish seems to be very hard to pinpoint.

I have had Murchison put a reader on and no faults came up. I have done the ignition switch on switch off quickly and no codes on the odometer.

Although no conclusive answer most people seem to think a sensor
but possibly ECU - I just don't know. can that be reflashed or better to look at a drop in replacement??

While the fault is bloody serious (ie dangerous) its also very intermittent which is making it hard to pinpoint.

Happy for all suggestions and assistance

Steve

[Hayesio]

Yeah, it definitely sounds like a challenging (and dangerous) issue. I'd be reasonably certain that it's not a fuel delivery issue - fuel tank pump or filter - because the engine would flutter before cutting out. And it would also struggle to restart. I might be wrong about this but I've got a feeling that the engine will still run in limp mode without the fuel rails sensor. You could test this theory by disconnecting the sensor harness and seeing if the engine will start. If it does, you could be reasonable sure that this is not your issue.

You might want to consider purchasing a BlueDriver (about 130 bucks) so that you can do a thorough scans of the jeeps controllers yourself. Next time it happens, you can do a scan immediately and see what it reveals. You can also monitor the fuel pressure signal (and other PID's) realtime which may reveal valuable information.

I'm still thinking it might be an ECU issue. Maybe a loose power wire to something vital, or loose earth wire etc. Have you tried just letting the engine idle and then wobbling/gently tugging electrical wires at the various sensors and ECU?