Wideband Pt.2 - AEM Wideband UEGO test

Just a "dummy fit" of the gauge to test out how responsive the sensor is, and to check out the features of the gauge.

Watch this video for a clear explanation of what a wideband is, what it does, and how they differ from a narrow band oxygen sensor

[christianlewis]

I’m sure after two years you’ve figured out that the sensor should be installed 18inches downstream from the exhaust ports or turbo charger if present. But for anyone else watching who might not know, that’s what it says in the manual for the gauge. 18” down from turbo or exhaust ports, and upstream from catalytic converter.

[epoxeclipse]

wide band in a close to turbo location might not be a good idea. using your secondary 02 slot would be more ideal. the sensor will get too hot and can burn out much quicker than normal life expectancy. I think AEM recommends within 3 feet of your trubo, which is about where your factory secondary 02 should be located.

[nick_parker]

I think the numbers in the 15 - 16 range are not indicative of whats in your cylinder. Many older unsophisticated port injection engines will start to get rough when getting near stoich, especially when cold - your engine is running smoothly. Raw fuel from a misfire (not yours) or due to cam overlap / injection timing cam also render an AFR gauge almost useless around low engine speeds / idle - raw fuel can really confuse a WB sensor.

[lordandprotector]

Never let it heat up like that, before starting the engine. That's how the vast majority of sensors go bad, before their time.

[MrNickkang]

16.1 to 16.2 at idle is good for economy class car i think