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Old 05-12-2008, 10:46 AM   #3 (permalink)
rarson
Proven Member
 
From: Roscommon, Michigan
Region: Midwest
Registered: Jan 2004
Posts: 280
Classifieds Rating: (0)
Reputation: rarson is more helpful than not
If your O2 sensor doesn't work, then the gauge can't work. All the gauge does is light up according to the voltage of the O2 sensor.

At idle, it should bounce around as the O2 voltage sweeps.
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