[A horse with no name]

Originally Posted by DRACO A5OG

Buddy with an 87 just called me from track day, his gauge just started to peg up while on.

I told him to check the connection at the oil level sending unit at the sump at rear wheel well. He checked and the negative wire was dangling, bingo

Search for OLSU, I posted a tutorial on the diagnosis and fix.

Jim

Jim, here's the info/thread that you sent me some time ago...I kept it - Very good!
http://forums.pelicanparts.com/porsche-911-technical-forum/594192-oil-level-sending-unit-how-service-repair-maintain.html