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Date: 7 Aug 2003 10:11:38 -0700
From: alancemornopsamo.com (Lance Morgan)
Subject: Re: O2 sensor failed again


"Razvan" <Razvan.Radulescunopsamtico.ca> wrote in message news:<2x9Ya.4121$pq5.654806nopsam20.bellglobal.com>... > Hello all, > Is it normal for O2 sensor to fail again on my Saab 900 1996 2.0 Turbo after > three months and only premium gasoline? Any options other than forking > another CAD$300 to my "Saab specialist"? (i.e. code reader, parts and > parking lot job, or dealer maybe) > Thanks > Razvan > Southwest Ontario I believe the NG900 uses two O2 sensors - a front and a rear (I drive a c900). Not sure how the 'failure' was confirmed? but O2 sensors can be somewhat tested w/a DMM, and definitvely w/an oscilloscope in closed loop (voltage output, switching speed). All associated wiring should also be checked. If DIY inclined, there should be (not 100% sure) a 4-wire Bosch replacement ("Premium" or sometimes marked "Universal") available for _much_ less, either at a local chain store or on-line. I don't have the Bosch PN (the c900 3-wire has at least 3 or 4 PNs that'll work): that'll have to be researched for your NG. The only real difference is that they just have pig-tail leads, i.e., the OE harness must be spliced in (suggest solder and heatshrink [some also stagger]) Old sensors can sometimes be seized on - making removal difficult.

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