Lambda sensors

Hi,

I just got a lambda sensor for fitting to my Range Rover today,
however, I'm a tad concerned about fitting it. The engine it's to go
onto is a 4.6 v8 with a Link Electro EFi controller. V8s I believe
normally have either two or four lambda sensors on them? I am a bit
concerned that if I only fit one, then one bank of the engine may run
lean.

Does anyone know how the multiple lambda sensors are wired to rover
ECUs?

Regards

William MacLeod

<[email protected]> wrote in message
news:[email protected]...
> Hi,
>
> I just got a lambda sensor for fitting to my Range Rover today,
> however, I'm a tad concerned about fitting it. The engine it's to go
> onto is a 4.6 v8 with a Link Electro EFi controller. V8s I believe
> normally have either two or four lambda sensors on them? I am a bit
> concerned that if I only fit one, then one bank of the engine may run
> lean.
>
> Does anyone know how the multiple lambda sensors are wired to rover
> ECUs?

Hi Willie. If you think of the ecu as 2 ecu's in the same box, each one
looking after 4 cylinders, then you're not far off the mark. That's the
simple way to imagine it, not strictly true but a good idea of the operation
none the less. With aftermarket ecu's, it's a reasonable assumption that all
8 injectors will receive the same, equal pulsewidth for a given
load/rpm/throttle position, so only monitoring one bank isn't really a
problem as the other will be a mirror image, assuming all the injectors
themselves are serviceable. You could fit a boss to each downpipe, allow it
to self-map (I'm assuming that's your intention) then do the same again with
the sensor in the other bank, then if one is richer than the other, use
whichever one is providing the richer map to play safe.
Badger.

Hi Badger,

Good idea about fitting a boss in each pipe, think I'll run with that.
Now, just have chop sum M18 nuts up.....

Regards

William MacLeod

<[email protected]> wrote in message
news:[email protected]...
> Hi Badger,
>
> Good idea about fitting a boss in each pipe, think I'll run with that.
> Now, just have chop sum M18 nuts up.....

Be careful of correct thread Willie, I think they are M18x1.25, whereas std
M18 has a 1.5mm pitch, or something like that. Might be 1.75, even, but
check first as I seem to remember it's not a std common thread pitch.
Badger.

On or around Thu, 23 Jun 2005 22:34:06 +0000 (UTC), "Badger"
<[email protected]> enlightened us thusly:

>
><[email protected]> wrote in message
>news:[email protected]...
>> Hi Badger,
>>
>> Good idea about fitting a boss in each pipe, think I'll run with that.
>> Now, just have chop sum M18 nuts up.....
>
>Be careful of correct thread Willie, I think they are M18x1.25, whereas std
>M18 has a 1.5mm pitch, or something like that. Might be 1.75, even, but
>check first as I seem to remember it's not a std common thread pitch.

it'll be metric fine, probably.

--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Quos deus vult perdere, prius dementat" Euripedes, quoted in
Boswell's "Johnson".