How do you check an O2 sensor???
?
Racer
Joined: Feb 2001
Posts: 286
Likes: 0
From: Bayville NJ
Re: How do you check an O2 sensor??? (Son93SL2)
"....use a micrometer....." Huh? To get a more accurate reading than using a tape measure?
O-2 does not change resistance as O-2 varies, it generates voltage between ~0 and ~1 volt. Pretty sure Atap will give you voltage output. Voltmeter will also tell. The voltage, at idle, will keep going up and down within this range, indicating the sensor is working and the pcm is correcting to maintain stoichiometric. As far as which wires to tap, maybe someone can help. Can't get to my shop manual right now. If no one posts by later today, I will.
O-2 does not change resistance as O-2 varies, it generates voltage between ~0 and ~1 volt. Pretty sure Atap will give you voltage output. Voltmeter will also tell. The voltage, at idle, will keep going up and down within this range, indicating the sensor is working and the pcm is correcting to maintain stoichiometric. As far as which wires to tap, maybe someone can help. Can't get to my shop manual right now. If no one posts by later today, I will.
