About a week ago i removed and replaced my trans. i started the car back up no problems ect. But my oil press gauge is going crazy, and inconsistent. When I turn the car off and remove the key the gauge needle drops way below the plane, like negative 20 psi,??? What the hell is going on. Ive been driver the car,(hard), its not like there isn’t oil press it would have blown up by now, so what is wrong with the gauge?
Anyone have this problem?

 

Didn't remount the oil sender condensor and are shorting out the wires for it.

It normally mounts to the tranny at the clutch slave.