SamGrant951

Had mine installed since 04 I think (thats about ~8k miles or so)

Always seemed to read correctly (compared to the 2 times Ive strapped the car to a dyno) - last weekend on the way to Porsches 2 Oxford it showed my AFRs in the 15's under cruise and in the 12's under boost. Usually it reads 14s @ cruise and high 11's on boost.

Will running Xylene a few times a year kill it quicker than standard pump gas?

What have other seen - do they just start reading high or low once they go out?

Either way I was planning on ordering the boost sensor from Zeitronix this week so I guess I will add a new 02 sensor as well.

Thanks,
Sam

MPD47

Definitely needs replacement, I dont believe you can recalibrate with zeitronix either but a sensor run that long should be recalibrated.

SamGrant951

Thanks Mike, will get one ordered today/tmrw.

Zeitronix responded that an exhaust leak could cause the numbers to be off and said that usually when sensors fail they fail at 14.7, 9 or 21 and seem to get sluggish. He wouldnt rule out the sensor though and with 4 years of use a new one cant hurt. He said no calibration/reset necessary.

MPD47

Sam, I'll PM you more info tonight....

SamGrant951

Thanks again Mike for your pm. Since Id never had my sensor off Mike told me the 02 sensor carries a VW part number and I could get it cheaper there - I went to the dealer and the price has gone up!! (quoted me $143, their price is about 107-110 now I think)

Anyways, just a heads up - found it on Amazon for $50.98, 3 day standard shipping total = $56.09

http://www.amazon.com/Bosch-17014-Ox...7527392&sr=8-1