Air/Fuel gauge freakin out, cuz i wired it wrong?? Options

[Redline08]

So i just hooked up an air/fuel gauge to the O2 sensor coming right off the headers. Im guessin this wasnt the best place to wire it because it jumps back and forth from lean to rich constantly unless i go WOT then it just shoots into rich and stays there until i let off.

Wheres the best place to wire it? prolly off the ECU?...

[Jeunesse]

"One thing to make sure of though is when you connect the o2 signal wire, tap into the main harness wire, not the o2 sensor wire. The o2 sensor wire has a small hole in it so that it can take a reading of the outside air to compair it to the amount of air in the exhaust, if you tap into that wire, your o2 will give off a false reading and it will screw up your A/F ratio. " - Valo666
"And on Deceleration... Your car is automatic, so when you are on the brakes, the torque converter unlocks, and the idle valve bumps up the idle, thus, your engine is no longer in decel mode. When your engine is at a higher RPM with no throttle and no brake, it is in decel mode, aka deceleration fuel cut. During this time, your injectors are fully shut off (zero duty cycle), so your O2 sensor is not registering any fuel in the exhaust stream. What you are seeing is absolutely normal.
Narrowband AFR gauges are also a universal item, so any differences with O2 sensors (ie: GM, Toyota, Honda, etc) will react differently with the gauge.
It's nice to see what your engine is doing, but the nature of this gauge is very inconsistent so don't worry about it too much. " - Tony_the_Tiger


This post has been edited by Jeunesse: Jan 20, 2008 - 3:11 PM