The V8 Owners Forum -

Yes, the RG is telling me I’m running Tune 2 (uk no cats), which lines up with the tune resistor fitted. ECU is standard and not tampered with as far as I can see, but there’s no guarantees. Fuel regulator is a new Genuine Land Rover part (standard RR part and position). Pump was new earlier this ye...

I only disconnected the MAF sensor to see if it would run in limp/default map. The connections appear to be fine when it’s plugged in. Voltage as expected and I can see it working on the Rovergauge display.

Ok, here’s this weekend’s update… Intake system carefully sealed (manifold to trumpet base, trumpet base to plenum, and IACV housing). All vac lines attached and appear to draw a vacuum (i.e. no split hoses or diaphragms). Throttle butterfly gap set with feeler gauge. Hooked up Rovergauge - have con...

Thanks - fingers crossed for Rovergauge giving some clues! Re air leaks, I have found a place doing plenum gaskets, so I will give these a try - I also don’t like using sealant everywhere! https://www.classeparts.com/products/range-rover-v8-efi-engine-new-plenum-chamber-improved-complete-gasket-set ...

Thanks for you advice here, much appreciated! I came to the same conclusion earlier today and ordered a cable so I can get Rovergauge hooked up as a next step. Will hopefully take some guesswork out of it. Completely agree with your comment about new parts not always meaning they’re ok - I buy genui...

Just one thing to add - with the MAF connected it can be kept running with some throttle pedal, but it’s a real challenge! Is this just something wildly out of adjustment perhaps??

Evening folks! I am finishing off a longstanding project, an ex-military Half Ton (Lightweight) Land Rover with a freshly built standard-ish 3.9 14CUX hotwire V8 lump. Thanks to everyone who had contributed to this forum, it’s been a huge help to me. It has been a fun and satisfying project and my f...

Haven't got a fuel pressure gauge unfortunately so don't know if the pressure is too high at the rail. I agree that the pressure regulator may be causing this, but I'll probably work through all the electrical tests in the Haynes first (and maybe use a diagnostic plug-in box) before buying a new reg...

Ok, just had a quick look at the old Lightweight to eliminate a few things: 1. Fuel return line - Looks ok, plenty of fuel returning to tank. 2. Vac pipe between plenum and fuel regulator - Is definitely attached but too dark to check for splits etc. I seem to recall there was no obvious damage when...

Cheers - will definitely bear that in mind if my loom has the right connector for it...

Thanks, I will have a look for that diagnostics connector later. Found this unit on the web for around £100 which may be money well spent: http://www.bespokeintelligentsystems.co.uk/Products.htm I'll also check the earths (ones on back of cylinder head?) and return line for fuel. Cheers for your sug...

Thanks Ian, Forgot to add that my battery has an isolator switch fitted so the ECU is usually powered right down. Hopefully this will have cleared any previous fault codes. Looks like I will just have to work through all the electrical tests in the Haynes manual to narrow things down before resortin...

Hi all, Hopefully some of you clever people can help me out with getting my 3.9 to run properly... :wink: Problem: Engine will fire up and run for 10-15 seconds then flood and die. Cannot catch it on the throttle, all plugs then soaking wet with fuel. It will then only splutter and f*rt a bit and re...

Morning all, I'm still a bit of a V8 newbie so please bear with me... I'm currently in the middle of fitting a fully re-built 3.9 (standard Range Rover spec) on Hotwire into my Land Rover Lightweight. The ECU which I have acquired for this setup appears to have already been tinkered with! Could anyo...

Many thanks Badger, very useful information.

I have since come across a complete hotwire system at a good price so will probably go down this route instead now.

Cheers,
Steve.