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Check engine light. S90-V90

posted by  RWD forever! on  Tue May 18 12:21 CST 2010
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last visit: Wed Oct 6 02:21 CST 2010
[RELATED]

Well the plot thickens, I tried a procedure with the air pump inlet to the head and the light stayed off for 13 days, Thinking it was fixed I drove it to Saskatoon from Edmonton and everything looked perfect. Of course the second I stopped for gas the @#$%&* light came on. Same code but now it includes both O2 sensors. I am now wondering if it is possible that the new catalytic could be the problem? I am still pursuing the ground wire theory but it seems unlikely to me that both would simultaneously have a bad ground and why now as it has always been only the front O2 that goes int fault mode?






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