o2 test

[powerband]

I couldn't get the o2 test to produce expected results so I put new unit and get same result. Any ideas on my test method or results appreciated : TEST:1 - Engine fully warm (temperature up to normal). Turn on ignition switch (do not start engine).2 - Turn diagnostic mode selector on ECU fully clockwise.3 - Wait a few seconds.4 - Turn diagnostic mode selector fully counterclockwise (MODE-II.)5 - Run engine at 2000 RPM or higher for about two minutes under no load.6 - Check that the inspection lamp (red LED) on the ECU goes on and off more than 5 times during 10 seconds at 2000 RPM.

RESULTS:I hold engine speed to @ 2K RPM for 2 minutes and get no lamp at all, if I blip throttle above 2k rpm the CEL flashes once - thats it. How should lamp "flash five times" - while engine runs or the repeating five long/five short "no codes indication" when ECU testing?.

Car runs well but after when up to temp idle becomes unstable and hunts - sometimes stalls.

Thanks