Help!! 2012 engine into 05 D3 issues 2.7

[Silver Surfer]

Hi. My car is at the mechanics as I type this. I have just fitted a 2012 engine and transmission. Auto won't communicate so they are looking at changing the valve body (which is stuffed anyway on the old one) and the engine will start but only run for 10 seconds then cuts out. Losing fuel pressure.

I assume there would be a computer re programme or similar to fix it but it looks like ending at the scrap yard the way it's going. Please advise if you have any helpful info. I have spent 20k already on a 20k car. Thanks.

[AnD3rew]

I am very far from an expert on this, but from what I have read on these kinds of issues I think the ECUs for all the various components, engine, transmission, suspension etc etc must match up. I don't know how you achieve this but at the least I would suspect you would need access to the LR diagnostic gear to be able to reprogram all the ECUs.

[PeterOZ]

I'll suggest you will need a lawyer to sort out the idiot mechanic who talked you into this route.

Good grief Charlie Brown.

[mechanic2you]

Silver surfer


What tha
The problem you may have is transmission 6 speed or 8 speed
Reprogramming may not rectify your issue
Do you know what faults are logged
What is and what is not talking
Possible huge bag of worms
Sorry

[Graeme]

The 2012 gbox's TCU uses a CANBUS protocol that is not compatible with any D3 as LR made the change to a new format for the MY10 D4 & RRS.

Are you trying to get the engine to run using the 2005 wiring and ECM? Its 2012 wiring and ECM are also not compatible with the rest of your vehicle also because of the CANBUS change. Even if you swapped all other ecus to the 2012 version they still wont run because LR moved some CANBUS wires to different connectors or connector pins for the MY10 vehicles, with the suspenision ecu an example, unless you swap the wiring harness too.

[PeterOZ]

I'm thinking you will need to get a different engine & tranmission that is compatible with your vehicle.

Diddnt the mechanic check via your VIN what combo is needed? Sounds like a very basic first off check was missed badly.

I'd be putting it back onto the mechanic to rectify but fear you are going to be in litigation land pretty soon unless you can find an expert who has a clever way around this mess.

suggest making some comments on the UK forums as well.

Do a ring around of some of the LR service experts and pick their brains on options. Here in Brisbane try MR Automotive. They maybe able to offer a solution.

Best of luck mate.

[Graeme]

I was told today that swapping the mechatronics unit did the job for the gbox so I explained why the 2012 didn't work. Did that allow the engine to keep running as I didn't ask?

[pibby]

looking at silver surfer's previous posts he was toying with the idea of putting in a transmission from a territory. maybe went the whole hog with engine and tranny from a territory?? assuming it all came from a discovery may not necessarily be correct.

[LandyAndy]

Pibby is correct.SilverSurfer did post earlier saying he was going to get a Territory motor and gearbox.
perhaps throw the Territory mechatronic unit and put his D3 one in to see if it helps??????????????
Andrew

[~Rich~]

As Graeme has said, it's the newer mechatronics not being compatible with the D3 Canbus loom.
Yes putting the original D3 one in may do the trick.