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Old 12-30-2012, 02:41 AM   #27
dsm_luck
Scooby Newbie
 
Member#: 322645
Join Date: Jun 2012
Location: Broomfield, Colorado
Vehicle:
2012 WRX

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Bump.

Been thinking about this for a while and I wonder if anyone can give me some advice on this.

I don't know if I stated it before but when the fuel trims went wack the first CEL I popped was a P0171 system too lean. Cleared it and then started popping a P2097 Post catalytic bank 1 too rich. I have also noticed that my MPG estimator on the dash has dropped about 4 to 5mpg from where it normally sits. Car smells like ethanol when idling. I know its unlikely that either of the 02s have gone bad but isn't that one of the indicators when popping conflicting CELS like that? If so how can I rule out bad 02s?
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