waddup everyone,

just wondering if someone can give me more detail on the O2 sensors on the astron motors?

im led to believe its a wideband sensorbut not 100% sure.. is it narrow or wideband? (and whats the difference?)

Also need to know 'how many' wires it has...

from sight it has a single wire, is it possibly a 5 or 4 core insulated wire or is it just plain single??

Thanks!

Anyone?

single wire narrow band iirc

the difference between wide and narrow band is how it measures stoichometric AFR. narrow band is basiically a high/low outputit tells the ecu that its either high or low of stoichometric mixture. The ecu then adjusts fuel and timing slightly until it says the opposite of its first reading, then adjsuts the fuel and timing the other way until it changes back to the first reading and it does this like 4 times a second backwards and forwards and hovers around the stoicometric mixture its set to run at. You cant use a narrow band sensor on a AFR gauge to accurately tell you the AFR for tuning purposes.

Wideband has a very linear output voltage depending on AFR. these can be coupled to a gauge to aid in tuning a verhicle. Some ecu's can use them full time to monitor fuel trim but 95percent of stock cars use narrow band. A lot of new wideband sensors also have a narrow band output so you can run 1 oxygen sensor to tell the ecu what to do and also to feed info to a gauge to display an accurate AFR in real time.

Your car will be a narrow band, and and just check the plug to see how many wire it is

Definitely narrowband. Wide band sensors are only just being put in common cars now - and it's 2011. Back in the early 90s they would have been hellishly expensive.

They're probably also single wire unseated sensors too, which means they take a lot longer to come up to temp and put the ECU into closed loop mode. I believe they also wear out quicker than heated units too.