[Shotimes] Needed Fresh Perspective

[Kevin & Cheryl Airth]

David:
 You have checked everything else so if you believe the O2 sensors then you
have a combustion problem on both cylinder banks. Random misfires? Does the
car run 100%? Have you pulled the wires to check for oil in the plug wells?
I chased a O2 sensor code that still came on after replacing it. I  finally
found oil in the plug wells. But the car seemed to be running fine? I can
only guess that with enough misfires it trips the O2 code?
.
.



> Well here is how it started. I got lazy and did not have time to change
the oil ran it through a Quaker State. A few days later I light up the CE
with a 41 Run the O2 sensor through the tests and they test fine. change the
fuel filter it was old. 41 went away for a few days then came back with a 41
and a 91. A few hours ago the party broke up here. I had two Ford techs a
Ford engineer. A GM tech two GM engineers A Chrysler Experimental engineer.
I Certified Mechanic (me) Had every sensor tool known to man on this thing.
And still can't find the reason the codes are comming.  Both O2 sensors
check ok. So now I'm at the point where the rear is lean and the O2's are
not switching.
> Anyone here got anything me and the boy wonders have overlooked?  I'm open
to suggestions. It's driving me nuts. I'm losing sleep over it.
> Dave. SHOly going crazy