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Old 06-05-2001, 05:29 PM   #1
inpreza kid
Scooby Specialist
Member#: 3334
Join Date: Dec 2000
Location: Calgary, Alberta, Canada
Post how do you hook up a voltmeter up to the front o2 sensor?

ok the rear o2 sensor doesn't work worth crap when trying to get a decent reading off it with a A/F guage. i want to hook up a digital voltmeter to the front o2 sensor. here is the hard part. i know you hook the positive wire from the voltmeter to the front o2 sensor(connector b134 wire 22) but where do you hook the ground from the voltmeter? just any ground wire? also what votages should i aim for with a wide band sensor when tuning with a AFC?
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Old 06-05-2001, 06:47 PM   #2
Scooby Guru
Member#: 3873
Join Date: Jan 2001
Location: Tampa, FL
. Paradise is
like Disney with hookers


Any piece of metal should do, the entire chassis is grounded, you should be able to pull any screw and use it as a ground.
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Old 06-06-2001, 05:38 AM   #3
Member#: 2641
Join Date: Oct 2000
Location: Bethlehem, PA
2000 Impreza 2.5 RS
Dirt and Bird Poop


Wow, trying to read voltages from an O2 sensor with a multimeter is HARD. It fluctuates SO much...

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