Low Oil Level Warning on Intermittently

[Panzer4]

Hi guys,

I have a 2000GTP with about 80000 miles on it, a 3,4" pulley (installing 180t-stat in 2 days) and a tuned PCM (thanks UR LOSN), I noticed that I get the Low Oil Level warning when I start my car for the first time in a day or after a few hours parked. If I immediately restart my car, the light goes away, as it does when I haven't left it parked for too long. I'm wondering if its just a bad sensor or the symptom of a larger problem?

Any ideas gentlemen?

Cheers!