scoootie5

I have bought a Bosch LSM-11 and will be attempting to install it later today if poss..

Just been searching through previous treads and found a couple of pages about it.

So the 2 White wires are heater wires
the black is signal
and the grey is ground.

Obviously the black goes to my oe white signal wire
Grey I do not use just snip and leave??
The white wires not sure?

Any help apprecited before I pull and cut it about.

Cheers
Scott

16vastra

the extra ground makes a fair bit of difference to signal quality apparently so use it.
heater takes 12v

scoootie5

Thanks for the reply.

Will have a look later tonight.

Cheers
Scott

scoootie5

Well its all on and have noticed that my AFR is NOT so livley any more, I will just have to see if it has improved my thirsty MPG.

Only thing I have left to do is solder the wires together on the weekend, just crimped at the mo.

Job Done

Cheers
Scott

16vastra

is this running your ecu as well? the connections MUST be soldered and secure or you will give the ecu bad readings.
might be why the response is a bit slow

scoootie5

Ahh right I will be soldering tonight then.

Also noticed that my old Lambda sensor was a bosch item but did not recognise the part no. It had been joined onto the cable too.
This was done by the previous owner in Japan.

Have also noticed alot more popping and banging from the exhaust

Cheers
Scott

16vastra

thats you running lean then

MAFFA

Shouldn't that be rich? More fuel hence more popping & banging Fit a Lambda sensor & you'll soon see if its okay

MAFFA

16vastra

no lean, the popping is unburnt fuel in the zorst which builds up as it isnt ignited in the engine and the hot zorst makes it expand and pop
richen the mixture up and this popping goes as the fuel is sufficiently burnt in combustion. (or cut fuel on overrun altogether, but its sometimes annoying when the injectors come back on with a jerk)

Bob Rawle

Fitting the LSM11 will make the car run richer on closed loop driving as the sensor output is lower for the same afr .... pops and bangs are due to rich running and you will be over fueling on cruise. Boost doesn't use the sensor so won't change in reality although an afr meter will read differently. Lean running causing unburnt fuel ? ... lol

MAFFA

Know what you mean

Thanks for backing me up Bob & I may see you in a couple of weeks as I might tag along with my mate Brian when you fit & map his link

MAFFA

scoootie5

Ahh, I feel better now knowing that...

Thanks
Scott

MAFFA

No worries mate

Personally I think that if you don't know the answer to someones question then you just shouldn't answer at all. Giving incorrect advice has the potential to ruin someones car & there's no comeback

MAFFA

16vastra

oh right, will have to remap my fuelling then since i obviously dont know what i am talking about lmao

please know what you are talking about before totally dismissing something.
you are wrong by the way.

Bob Rawle

No worries Maffa, look forward to meeting up.

Bob

anskills

Erm hello, i think people who dismiss correct theories and obviously dont know basic fuelling should probably be the ones to keep their mouths shut and not laugh at someone who seems to be in the know.
Unburnt fuel is the main reason backfire occurs. However, oxygen and ignition are required to make a backfire happen. Fuel can often go through the cylinder unburnt during deceleration (especially if the throttle plate closes too fast). Strangely, this can be because the mixture is too lean to burn, that is, the A/F is less than 18-22:1. The rich burn limit is ~6:1 A/F.

[Edited by anskills - 3/21/2003 6:27:37 PM]

MAFFA

Obviously Bob Rawle knows nothing on fuelling!!

I would have thought that if anyone knows about it... he does

Anyway, 'nuff petty arguing over something that Bob has already answered above. Let's all just get along

MAFFA

anskills

i actually meant u maffa as u had a dig at the other guy, either way ill agree to disagree but i think u'll find its lean

16vastra

my original statement was meant as a warning!!!

i said it as a statement as you have to go very rich to get popping and whats most likely to have happened is that the (poor) connection of the AFR gauge has messed with the voltage getting from the lambda to the ecu and as such the fuelling is being compensated too much.
i have seen it before where the gauge made the ecu run so lean the engine stalled when the throttle opened. wired it to a 2nd lambda and all was ok.
if a tuner doesnt know about basic fuelling, especially what to look for when running lean (especially on a turbo engine) then i am afraid i wouldnt be impressed
if you dont understand how an engine works thats fine, but do not dismiss what someone says when its possibly damaging to your engine, at least look into it!
also find it quite sad how quickly it was laughed at, i map fuelling and ignition myself so i would like to think the basics are within my grasp. plus i run TBs on my daily car, which has lean overrun fuelling in the map and it pops, bangs and puffs black smoke (and flames if i am racing) when i come off the throttle, yet i can turn the fuelling UP and this goes, or i can turn the fuelling off altogether and it goes for the reasons explained above. i run it lean overrun tho cos upping the fuelling i get much less engine braking and cutting it off makes the car jump when the injectors come back on.
dont really know why i am explaining this to be honest as i know you wont take it seriously, but thanks anyway.