Mechanical Oil Pressure Gauge

The sensor wire probably fell off. A cheap mechanical oil pressure gauge will probably be much more accurate than your stock electric gauge anyway. Kragens, Pep Boys etc sell them. A short pipe nipple and a matching tee fitting are all thats needed. Remove the stock sending unit from the rear of the block, behind the intake. Screw the nipple into the block in its place and the tee onto the nipple. Addd the stock sending unit in the side of the tee, add the mechanical gauge to the top of the tee and you're done. I suggest using teflon pipe-tape on all these connections. My mechanical gauge has been there since 1989. I use the stock gauge as an idiot-light as its wildly inaccurate.

Thanks a bunch! When I looked at the wire on the block, it was loose. I just tightened and the gauge is fine. I am going to get a machanical one ASAP though.