My AEM UEGO has been doing this the last few weeks. Ive had it for probably 3 years or so now, and Im thinking its time for a new sensor.

http://youtu.be/dh5rgj-MN3U

95 Eclipse GS: 10.5:1, Crower 2's and MSII
186 WHP - 150 WTQ
14.697 @ 93.85 MPH......Gone, but not forgotten
99 420A Avenger: Given to my sister
99 GS OZ: Sold
03 Evo 8: Family Car with balls

I'd say either a short has developed or yes, it's time for a replacement.



The good we do, never remembered.
The bad, never forgotten.
_________
97 Eagle Talon ESi w/CAI/HiPerf coil & wires/on-board G-force meter

Yep, looks that way dude. Id say perform a recal, but IIRC the UEGO does not calibrate.

Is it just the VW 1.8 sensor? If so Advance Auto online with store pickup and coupon code VISA works great. I normally add some RTV to the cart so you get 30 off of 75, lol.

Yeah, they are calibrated from the factory and cant be changed. Its definately the sensor though, did a test I saw on youtube. Soak a rag in brake clean and lay the sensor in it. It goes to full rich and a good sensor should stay there. Bad sensors, like mine, will sit at full rich and then go to full lean while they are still in fuel. Then when you take them out, as the fuel dries off the sensor it goes from full lean, back to full rich, and slowly to lean again. Probably just going to get a new one from Ebay

95 Eclipse GS: 10.5:1, Crower 2's and MSII
186 WHP - 150 WTQ
14.697 @ 93.85 MPH......Gone, but not forgotten
99 420A Avenger: Given to my sister
99 GS OZ: Sold
03 Evo 8: Family Car with balls