Re: Question for Dean or others on buying an o2 sensor - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: Question for Dean or others on buying an o2 sensor
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Posted by Dean (more from Dean) on Tue, 5 Mar 2002 13:54:39 Share Post by Email
In Reply to: Question for Dean or others on buying an o2 sensor, Chris., Tue, 5 Mar 2002 13:37:24
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If I recall, there are two blackwires, for the heater and one white for the signal. The colors may vary, but the heater wires will be the same. There is no ground, even though one heater wire will be connected to ground.

I got one from cybertroll but someone else posted that they got a cheaper unit from a parts store. The 3 wire bosch units are mostly the same.

Plan your splice to not be in or close to a wire clamp where the wire must bend. Use heat shrink over soldered joints. Put some silicone seal over these areas and shrink the tubing over that. Take similar measures with the overall silicone and silicone jacket. Try to make the overall harness length the same as the original. The isulation appears to be a tough teflon like material, and as expected the copper wires are plated as the hot teflon extrusion process can react with bare copper. The wires were hard to solder, perhaps nickel plated. Fan them out and scrape or sand them to expose the copper. Just soldering them is futile.

I found the sensor easy to remove with a simple adjustable spanner. These are hard to remove sometimes because of years of heat and salt etc. They come with some antisieze on the threads etc. Some on the contact face perhaps. My replacement sensor created a probem with a contact resistance that developed. Perhaps I did not make it tight enough. You have seen the post on that issue I expect.

You should be getting well over 100000 miles on a sensor. The 95SET had one sensor, your Saab might have two. I changed mine at 108000 miles and the old one was working fine.

posted by 208.24.17...

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