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Dean, I have some 4 wire O2 sensor info for you,>>
Posted by Anders (more from Anders) on Wed, 6 Mar 2002 15:02:19
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Have been playing around with my new labscope and took some snapshots of the Black and Grey wires.
The black wire have a oscillating curve that range from 0.4V-1.5V at normal running, and if you close the throttle abruptly the signal drops to almost 0 V like all the old sensors.
The Grey wire have an oscillating curve ranging from 0.25V-0.5V and also drops down to almost 0 when closing the throttle fast.
The rear O2 sensor works pretty much the same as the front one but the curve is more gentle because of the cleaner exhaust after Catalytic converter, but if you snap the throttle, even the rear sensor max out.
And then you have the two white wires for preheat element.
I also noticed that the sensors seemed to be working faster than the 3 wires in terms of picking up an "disturbance in the force" like a misfire.
The Grey and Black wires are gold plated ones.
posted by 66.134.5...
Posts in this Thread:
- Dean, I have some 4 wire O2 sensor info for you,>>, Anders, Wed, 6 Mar 2002 15:02:19 <-- Viewing This Message
- I ordered a 4 wire replacement to wire in..., Chris., Thu, 7 Mar 2002 08:18:56
- Re: Dean, I have some 4 wire O2 sensor info for you,>>, Dean, Wed, 6 Mar 2002 15:14:33
- Oops, I meant to say 0.25-0.75V on Grey wire, n/m, Anders, Wed, 6 Mar 2002 15:08:28
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