1-3-2-4 Posted November 26, 2010 Share Posted November 26, 2010 The black wire is the signal and I think it's a grey or white wire for ground right? I want to check my oxygen sensor to see how responsive it is with my digital oscilloscope What range should I be seeing? I'm guessing it should react pretty much instant on throttle changes, no? Link to comment Share on other sites More sharing options...
RAYJAY Posted November 26, 2010 Share Posted November 26, 2010 try these pdf i have they might help jeff http://www.speedfreaksgarage.com/jeff/o2%20sensor%20wire%20info/2676d1090786515-o2-simulators-straight-pipes-universalo2colorcoding.pdf http://www.speedfreaksgarage.com/jeff/o2%20sensor%20wire%20info/2677d1090786537-o2-simulators-straight-pipes-makespecifico2colorcoding.pdf Link to comment Share on other sites More sharing options...
Fairtax4me Posted November 26, 2010 Share Posted November 26, 2010 Black is the signal wire. Ground to engine block or outer housing of the sensor. You're looking for a signal in the 0.0 to +1.0V range. Link to comment Share on other sites More sharing options...
1-3-2-4 Posted November 26, 2010 Author Share Posted November 26, 2010 my battery was low on the phone so no flash but you can at least see the waveform. it seems to be reacting in a decent manner Link to comment Share on other sites More sharing options...
Fairtax4me Posted November 27, 2010 Share Posted November 27, 2010 Nice looking scope! What kind is it? Does it record (or did you record) the highest and lowest readings from the sensor? Link to comment Share on other sites More sharing options...
1-3-2-4 Posted November 27, 2010 Author Share Posted November 27, 2010 it's a owon PDS5022S It does have that feature but it was so dark out I just wanted to get a quick reading.. heck I only checked out one injector before disconnecting everything. Link to comment Share on other sites More sharing options...
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