Well, finally made it today. After a new CAT she was still giving a 3.2 to 3.5 on the CO..We have tried everything including swapping a new AMM. O2 sensor is giving a good reading but we decided to go ahead and put a new one in. BINGO!! CO reading went down to .20 on both high and low speed. Somebody on this board suggested that to me last week. He said the o2 sensor could be "dying a slow death" and he is right.. I can't find that post but thanks to you and you know who you are. Please stand up and be recognize. once again thanks to all!!! O2 sensor lesson learned, don't always trust readings specially if the car's history is unknown...Maybe like a false positive??
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ReySC.. '86 744 GLE (Daily Driver),94 944T 87 244 DL . http://groups.msn.com/Reysc/myvolvophotoalbum.msnw?Page=1
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