Oil pressure sensor. And moving the distributor does not change ignition timing, it only changes injector timing. Ignition is controlled by the pcm, based on the crankshaft sensor.

 

What i found is its a oil pressure sensor mine is cracked i looked it up on a parts website compared it with the part i found and its exactly the same so i ordered it i was wondering why my oil gauge was acting funny i will let you know if this fixes my problem

Thats what i will look like if you were to unscrew it an pull it out