Packard Forum Index » V-8 (1955-56)

The original sender which I kept ,I did clean it up and put it back in the car, works on the first startup after the car sits for a day or two, but then the needle slowly goes back to 0. I think my next step is to run a new wire from the sending unit to the dash gauge and see what happens.

I tested the continuity of the orig wire and it is good. I then used a new wire to go from sending unit to gauge and I got the same reading. So now I'm going to try locating another oil pressure gauge to see if the pressure stays constant.

My 400 is the same way; the electric gauge worked when I bought it but it stopped working after a couple months. The previous owner already installed a mechanical gauge mounted below the dash.

Would like to have the electric one work again at some point. IDK yet if it's a connection or sensor issue, and IDK if the sensors can be helped by, say, cleaning, or if they just need replaced.