After 3 years of faithful service, my dynojet wideband (guage) is going haywire.
When I go WOT, it goes real rich and then pegs on ultra lean (18). Then it stays there untill 10 seconds after I lt off and reads normally.
It is not tune related, the live scan says all is within good parameters.

Now is it the sensor itself?
Can it be just replaced? or a whole new guage has to be bought.

Could it be dirty and with what could i clean it? gas?

 

yeah, my aem sensor took a crap on me and reads at 14.x at all times. idle, wot, ect

 

Have you checked the gauge output against what the WBC is seeing through the USB interface? If they are both reading the same, it's time for a new sensor. If the WBC is reading correctly, something must be wacky with the gauge. The dynojet WBC sensor has a different wiring connector from standard bosch LSU4 sensors, but you can splice your old connector onto a new sensor (I did this on my dynojet wideband & it works fine).