[garync1]

I have looked around on this forum for issues dealing with the o2 sensors
I have notice many of these being earlier years. I wonder has anyone had a problem with there windstars as far as the isolator bolt and vavle cover replecment on there newer models or 2000 and above. I have checked the isolator bolts and they seem fine the seals as well, the only thing i did notice is that I have a little oil in the intake area a nice thin coat not too bad but it was there the pcv valve is in good shape clean every thing and reasembled I did notice a little light brown glaze coat around the metal part of the intake going into the head area may take apart later and clean but did not see the need at the time. I had a carbon knock sound a while back on cold start but that went away.
I do have the engine light on now saying both o2 sensor are bad. reset the cpu and it came on a few weeks later I will replace both but would like to know if the tsb I pulled about replaceing the valve cover would be needed and vacuum line etc but I don't feel the need to replace the isolator bolts any help would be greatfull thanks,Gary