Hi all

I bought a 2007 diesel auto a few years back as a wee bit of a project car…. Fully expecting issues I could build up my spanner skills on….

However, I’ve been plagued by a cut out issue for a while now… stated off quite intermittent, happens all the time now.

I’ve tried all the usual fixes from fuel filters to crank shaft sensors, also replaced throttle body, turbo, EGR, cooler, fuel pressure sensor, regulator, fuel tank plus senders, HPFP, leak off valve, injectors tested fine etc.

In short, the engine will cut out… the fuel pressure drops and engine dies. It will always log a P0045-19 fault code… occasionally low fuel rail pressure fault codes too, but the turbo one is constant. I’ve had 2 replacement turbo actuators and now a 3rd with a new remanufactured turbo - sorted some other issues (yap noise) but not conk out. I have also replaced about 30cm of the turbo actuator wiring and connector as there were a few sliced wires, but no cure.

Given the mechanical fixes with no cure, I’m getting down to it being electrical…

Can anyone offer guidance on how I might test / examine to narrow down this issue?

Was thinking of stripping out the engine wiring harness to inspect - any suggestions or is the Workshop manual best to follow?

The harness I have is 7G92-12A690 CBF…. I can see the same numbers but CAF or CAB… Stupid question but do the letters matter if I’m replacing?

Any suggestions or advice?

Thanks in advance!

Andy

Have you checked for wiring damage under the air filter housing? There was an issue on Gen 3 Haldex cars where the wiring below the air filter wasn't routed correctly, causing chaffing of the harness. Hyundai Ioniq 5 Ultimate. The family car.
2009 Rimini Red SE TD4. Gone.
2006 Tonga Green i6 HSE. Gone.
Audi A5 convertible, my daily driver.
1972 Hillman Avenger GT, the project.

Hello Sir

Yes, looked there... i spotted that video on Youtube and was hoping it would be that... popped the air box out and moved the hose/pipe that goes to the wing and inspected the cable. looks sound and still has the corrugated pasted around it rather than just tape as in the video. Its intact so i assume the internal wiring would also be? All good under battery box and fuel filter cage

Ive been chatting with the very helpful people at freelanderspecialist.com and they suspect wiring between ECU and turbo or the ECU itself.

Any recommendations on where to have the ECU tested?

Andy suggestions on how to carry out the wiring tests to the turbo? I have a multimeter but little knowledge but can follow instructions.

Cheers!

Andy