Several questions...
1) Intermittent "CO" message in the fuel guage area. What possible malfunction(s) does this refer to?2) Oil pressure readout goes low, intermittent. Returns to "normal" after a period of time which varies. Bad sensor, wire or ground?
3) Motor runs fine with no load, in "park" and "neutral", and on dyno in drive, accelerates through entire range with no problems, but seems to misfire during actual road use under light to moderate acceleration. Depending on speed when this occurs, the misfire or skip can range from a single miss to multiple occurences which feel like the shudder of very out-of-balance tires (at highway speeds). Motor smooths out immediately if accelerator is released. This occurs even if overdrive is locked out. Oil pressure goes low, but I should think that this is to be expected and unrelated to #2.Recent work: Car was parked for about 18 months, after A/C compressor seized. Was driven approx. 3 miles with no serpentine belt. Shortly before that, distributor was replaced during "routine" tune-up when cap screw snapped off in housing and attempts to drill and tap destroyed the "ear".
Since resuming use of the car, both fron axles were replaced (CV joints bad), ball joints and control arms replaced (worn), A/C compressor, serp belt and battery replaced. (I don't think any of these are related, included for completeness.)
I'm not a complete moron when it comes to cars, but the majority of my experience comes from before computerized motor control and fuel injection. (Give me a 1970 AMC Ambassador with a 360 4bbl and an unlimited supply of gasoline and it would never see a profesional mechanic...damn, I miss that car.)
Thanks for your consideration.