Yesterday, while driving around, minding my own business , a nasty Check Engine Light reared its ugly head...having seen more than a few CEL's in the past four years, I checked & cleared the codes with my handy-dandy scan gauge II. (thanks again Tone )
To my surprise, less than a mile down the road, another CEL pops up...Hmmmmm, this might be a REAL problem.
I opened the hood & started poking around & found that my long time favorite PCV valve (Purolater #PV1061) had seperated where the top & bottom halves snap together.
This caused un-metered air to enter the system, throwing codes:
0171 Fuel Trim System Lean Bank 1
0174 Fuel Trim System Lean Bank 2
I don't know if this was just a fluke caused by a manufacturing defect, or if Purolators quality has taken a bit of a backslide...I've installed a new PV1061 that I had in inventory, and will be keeping a close eye on this one for any issues.