This past weekend I decided to go up north with my '93 Ruby (about 250 miles one way) on my first long trip since repairs. I got about 80-90 miles out and engine light came on and mileage dropped from 28-31 down to 17-21. It would again cough and sputter and when I needed to come to an intersection it would quit.after several tries it would start up and run but still had poor mileage and quit. I babied it all the way to where I was staying. I checked codes and reset pulling ground and turning lights on and left set over night. Ran ok again no codes and mileage ok, but after about 90 miles it would do it again. did this about 4 times 'til I got home yesterday. I just put in new sensors as it did it a couple of weeks ago. But driving to work about 40 miles and sitting all day problem never showed up again, it seems to do it on a longer time frame of that 90 miles or so range. And both codes are probably set at the same time. I will check the ground tan wire from ECM and will also see if there is a ground short from sensors. Also read possible MAP sensor, but ruled that out as I think it would have set a code. Also when I put in the new sensors I tightened exhaust nuts down so it would not suck air for faulty reading.

Any Other idea's???

Thanks