Returning from Canberra this morning, My Engine light came on Twice, both times for a Period of Around 30-60Secs and both times near road works..
Now I was driving in Highway Conditions so 110kph Revs were 2700-2800RPM, both times it appeared the Car was tilting down hill slightly..

Any Idea's ???

If the car was running fine, it most likely could be the oxygen sensor.. nothing major you can still drive with it on until ya have funds to get it replaced, from memory these aren't too cheap. They've got a habit of coming on intermittantly. In my old TR 5 speed, I found the light went off quicker if ya put ya foot down but it could be different!