Wide band lamba sensor?

15th November 2006, 13:56

Would anyone be kind enough to give me a summary of what these's puppies do?

Cheers

Steve

15th November 2006, 13:58

do you lamba sensor in general or the wide ones

15th November 2006, 14:10

Hmmm, i read up on these a while back and have since forgotten.

There used to tune your Standalone Engine Management to your individual car, while you drive it. I think thats the jiist of it anyway!

15th November 2006, 14:18

Mystic I've gathered abit of knowledge from reading other threads and they are mainly used with standalones but I just wondered if anyone could give me a detailed answer or is that what google is for

?

CampDave,Bullit, Sean?

15th November 2006, 16:06

well its a lambda sensor thats wideband

may sound silly repeating it.

basically gives a fuller reading of the gases hence why most good AFR guages will use a wideband sensor or when mapping standalone ecus

15th November 2006, 16:08

Scott I feel guilty for not adding you to my list of experts now, please forgive me.

Thats makes alot of sense are they expensive?

15th November 2006, 18:31

there about £280 i think an they work with standalone. Theres some table valves stored in the ecu programs an they changes between these numbers to match how much gas are going throught exhaust an in turn adjust ya fueling.

Something alone these lines!!

Any luck with cams?

15th November 2006, 18:33

Yeah they appear to be mine but he wants the lot to go before I can have them.

15th November 2006, 20:07

Awide band lambda sensor is used to sense the air fuel ratio, much like the standard one on your car only much more accurate.

The standard one wil show a voltage of 0-1v to tell the ecu if the engine is rinning rich or lean with stoich being at 0.5v. and because of it's narrow limits will basicly only tell you if the mixture is lean, stoich, or rich.

stoich or stoichometric is when all the air and all the fuel (14.7:1) in the mixture is used in the combustion process with neither having any leftovers in the exhaust gass, i.e. the engine is at it's most effitiant, or so theory would have us beleive, witch is what most modern cars will idle at, although having said that if you wach the voltage it should fluctuate either side of 0.5v, this is to help the cat work to it's best.

Now, a wide band jobbie has a voltage out put of 0-5v so in essence gives you a wider range of mesurable ratio so that you can see exactly what the mixture is, hence why they are used by tuners when mapping an ecu. In my humble opinion anyone setting up an ecu, be it a stand alone, or re-map should use one of these to help them.

well thats as far as i can recall, I'm sure somone will correct my figures.

pete

15th November 2006, 20:09

Cheers Pete thats about all my questions answered

15th November 2006, 23:17

pete welcome back mate, your knowledge has been missed

16th November 2006, 19:21

spank you kindly. I do my best.

pete