wideband being weird

**gtpsleeper** · 07-20-2012

went for a drive and noticed out of the blue my wideband gauge is cycling like a narrowband would read??? If I give it some throttle it goes back to normal... then it will randomly read normal on regular driving... then start cycling again???

Any ideas what could be going on?

maybe a bad o2?

**matt5112** · 07-20-2012

Thats how our pcm operates in closed loop.

**JoRoW99** · 07-20-2012

Mine does this too...in fact it almost always does it unless im at PE, so yes its in closed loop.

**gtpsleeper** · 07-20-2012

this is an AEM augo wideband not just some narrowband gauge hooked up to my stock O2 and Ive had for about a year now... isn connected to the pcm at all.... and has never "cycled"...

this is not normal for a wideband...

**Fivefingerdeathpunch** · 07-20-2012

So what numbers is it sweeping from?

Mine always does 14.3 to like 15.4 while bumming around.

**gtpsleeper** · 07-20-2012

see its not bumping like that... as Im cruising itll read like "15.2" then bounce max lean.... then back to X... etc etc just like a narrowband gauge would...