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Old 01-21-2013, 04:02 PM   #11
Leafy
Scooby Specialist
 
Member#: 330625
Join Date: Aug 2012
Chapter/Region: NESIC
Location: MA
Vehicle:
2006 WRX
WRB

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If it start to fluctuate in closed loop and doesnt do it in open loop it can only be the o2 sensor. The sensor could be fine though, it could be a wiring issue.
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