I have a 1998 mitsubishi mirage. the check engine light was on, but there

[Bill]

was no code just 5 not readys? the 5 not readys were related to O2 sensors and EGR. I cant remember exactly what else. i changed the egr valve. same problem. changed the computer. same problem. restarted computer, several times. same problem.i tried to make a code show by unplugging the valve going into the egr, but it would never throw a code no matter what.i have no clue what is wrong with it and was wondering if anybody could help? Thanks in advance
i have been to 5 mechanics and noone can tell me whats wrong. some suggest my car isnt getting hot enough and that is the problem but i doubt it.

 

[Don_Gaza]

Have you tried a new o2 sensor? when faulty the engine light comes on!

Have it inspected for carbon deposit.and if its excess clean then refit....

I'm really certain about this lambda sensor(o2) on your car..Please have it checked! having much carbon deposit on its surface could possibly cause the engine light to come on.okay!!