popped 0131 and 2237 codes - I guess my NTK o2 sensor died. Rough idle smooths out as it gains temp - replaced w/MAP and woosh catted about a year and 20k miles ago. Coincidental w a 94 sunoco $25 load (on E ), plus I have a o2 adapter...hmmm. Got a bosch oe-looking replacement on the way, once bezos gets outta the billionaire bubble bath w/ hootcieCoo