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3.9 Disco EFI wireing?

Tech Talk for Rover owners.

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3.9 Disco EFI wireing?

Post by RUFF »

Anyone here ever wired a 3.9 disco motor up in anything else? I need a wireing diagram to wire the efi harness up to another vehicle not a rover. Can prob work out what needs to be wired and what can be left out but if someone has done one and has some info that would be great.
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Post by RUFF »

:roll: :?
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Post by RaginRover »

Is there a diagram in Sam's Haynes book ??


Tom
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Post by Cranky »

The wireing diagram in my Hayes manual was good enough. I have a computer if you need one. Am running an old motec on mine.
Bloody Range Rover drivers !!!
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Post by RaginRover »

Cranky wrote:The wireing diagram in my Hayes manual was good enough. I have a computer if you need one. Am running an old motec on mine.


The disco manual only had the diesel engine in it and the rangie 3.9 is a fair bit different, if you have the comp version of a disco V8 I would love a copy,

Thanks
Tom
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Post by Cranky »

I didn't realise the engine harness would differ that much from rover to disco. Mine was for the rover. :oops:
Bloody Range Rover drivers !!!
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Post by RaginRover »

Cranky wrote:I didn't realise the engine harness would differ that much from rover to disco. Mine was for the rover. :oops:


me neither till the other day
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POS
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Post by POS »

If anyone can help out with any details that would be great!
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Post by RUFF »

Just thought i would update this with some info for others wanting to do an EFI conversion on an earlier Rangie or similar.

I just fitted an early disco 3.5 EFI kit to my hilux. This is slightly different in the wireing on the 3.9 but is prob the same to wire.

I only had to hook up 3 wires to get this to run.

Brown wire- Battery +
White with a Red Trace- Ignition Sorce
White with Purple Trace to Fuel Pump +

There is also a White with a Yellow trace that is the Check engine light but i havent added this yet.

And it runs perfect.

It obviously has an earth in the harness as well but you cant miss this as its all on its own and has a bolt on eye at the end of it. And there is also a single wire near the Airflow meter that plugs onto the negative side of the coil.
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wiring

Post by Loanrangie »

Hi Tony, are you using rover ecu and air flow meter ?

Nick.
Saddle up tonto, its the not so loanrangie! . 98 TDI DISCO lightly modded with more to come.
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Post by RUFF »

Yes all stock disco parts. Its fitted to a 3.9ltr disco motor.
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