Sam Collins

I just installed a wideband gauge in my 02 cammed ls1. while cruising the reading on the gauge seems to rapidly jump around as shown in videos. The car runs fine despite these fluctuations and my ground is solid on the gauge. Has anyone seen this before?

Videos-

Idle:
https://drive.google.com/file/d/1I0H...ew?usp=sharing

Cruising(flat road no pedal modulation):
https://drive.google.com/file/d/1NfQ...ew?usp=sharing

G Atsma

It looks like it's bouncing between approx. 11.0-11.5 to 13.2-13.6 (don't hold me to these numbers, just guesses). What would you say your AFR is at steady state? It could be a bad connection, or just a bad gauge head.

Sam Collins

I don't think it is a problem with the car but a problem with the gauge/sensor. Both are brand new. under cruising I should be about 13.5 and at wot it goes to 12.5 however still glitches as shown in the video.

G Atsma

OK, as I said, possibly a bad gauge head. Now that you said what your normal AFR is, it looks like the gauge is "dying" occasionally. This is what raised the bad connection suspicion.

ElQueFør

Exhaust leak? When I first put my wideband in I had the thing mounted near the end of an open downpipe and it was bouncing all over the place from reading atmospheric air.