Ok, i did the oil pressure check and the findings are:
- engine cold:
1100 - 1300 rpm: 94 psi (the Haynes manual says 35.5 psi)
3500 - 4000 rpm: 100-110 psi (manual says 71 psi)
- engine at 70 Celsius:
1100 - 1300 rpm: 72 psi
After the engine temp. got up to 70 Celsius, I installed back the switch and restarted. After 1-2 minutes of idling the engine, the oil light got red again.
I'll take the bike tomorrow for a ride to get the temp. higher, then double check the pressure with a mechanic (and his gauge) and again my gauge (in order to confirm the readings).
Could it be that the switch is gone? Any advice and opinion is welcomed.
BTW, the bike is 2002 Monster 620ie Dark.
Thanks,
utzelu