3 or 4 wire O2 sensor?
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Instructor
Joined: Oct 2006
Posts: 233
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From: Franklin indiana
3 or 4 wire O2 sensor?
I am replacing my Bosch heated oxygen sensor with an AC Delco sensor. Should I use a 3 or 4 wire sensor? Do I need to supply 2 ground wires to it, or can I just use 1 ground? I am going to use a 3 wire AFS76 sensor for a 95 Astro, is this the best sensor. Are any sensors that would work shorter, I have a clearance issue. If a 4 wire is better, what application should I use?
