jhell00

i was wondering if anyone knows or knows were to look. im trying to hook up a a/f gauge and i need to hook into my 02 signal wire and i was wondering if anyone knows were to tap into or what pin it is on the computer?

cliffyk

You can grab the passenger's side (bank 1) front O2 sensor signalon pin 5 (a gray/light blue wire) of C133, here's where the connector is:[/align][/align][/align][/align]Here's a .pdf file showing the connector details...[/align][/align]There's a 6 mm bolt that you'll need to remove to uplugit so you can get at the wires, remove the negative battery terminal before messing with this connector!!![/align]

cliffyk

One other comment, be prepared for a bunch of people telling you how completely worthless a narrowband AFR meter is, that it's just a lightshow. [/align][/align]Tolarge extent they are correct, however many years ago before the wideband sensors were anymore than some engineer's recurring wet dream we did a lot of tuning with NB sensors. Here's a great (butdated) article about tuning with a NB sensor...[/align]

jhell00

yes im aware of that... i just wanna know in the ballpark of were im at...

cliffyk

I have one in my car, and old SDS Mixture Meter. After a while you'll learn to mentally average the sings in closed loop mode, and in open loop modeto gauge the velocity at which it moves rich or lean. These observationscan giveyou a pretty good "ballpark" understanding of what's going on AFR-wise.[/align][/align]Once thing that you may already know. If the NB output shoots toward rich, then disappears forĀ¼ second or so and then shows up lean, it means the mixture is rich as heck 9:1 or richer. When the mix gets that rich an NB sensor shuts down and the 0.0V output is interpreted as a very lean mix...[/align][/align][/align][/align][/align][/align]