noclss2000
May 7th, 2003, 04:27 PM
I received a few gauges from my g/f for my b-day, one of them being a nordskog digital oil pressure gauge. I also received the necessary oil sending unit for it to be hooked up. Monday I started on getting the gauge in. I put the oil sending unit in and ran the wires to it the way the directions call for. I didn't get any power to the gauge when I turned the key. The sending unit has two posts so I switched the wires and still nothing. I started playing with wires and what not and got power to the gauge for a split second and then nothing. I gave up and left it dead.
Today I started thinking of different ways to hook up the gauge. I ran the ground wire to the bolt where the battery grounds at instead of at the sending unit. That gave me power. The gauge however still read 0 psi. I then started playing with the sending unit. I played with the signal wire and couldn't get nothing, so I took it out and put the stock one back in. I also hooked the wire for the stock oil gauge to it and then saw a open metal spot on the oil sending unit :! I took the nordskog signal wire and connected it to the bare metal spot and then I started getting a reading. And not just a reading of jumbled numbers, it's pretty damn accurate. It's at about 29-30 psi at idle and 53 psi at 2k rpm's. I revved it up high and it doesn't go past 63psi.
Now comes the weird part.
I take off the wire for the stock oil gauge and then the nordskog gauge gets high numbers like it's running at 80 psi at idle. When I have both connected it's fine but the factory one shows really low. When just the factory one is hooked up it shows normal.
With the nordskog sending unit I get nothing all the way around. So I could have saved my g/f the money of buying a nordskog oil pressure sending unit and just used the stock one and had both gauges :shrug:
Today I started thinking of different ways to hook up the gauge. I ran the ground wire to the bolt where the battery grounds at instead of at the sending unit. That gave me power. The gauge however still read 0 psi. I then started playing with the sending unit. I played with the signal wire and couldn't get nothing, so I took it out and put the stock one back in. I also hooked the wire for the stock oil gauge to it and then saw a open metal spot on the oil sending unit :! I took the nordskog signal wire and connected it to the bare metal spot and then I started getting a reading. And not just a reading of jumbled numbers, it's pretty damn accurate. It's at about 29-30 psi at idle and 53 psi at 2k rpm's. I revved it up high and it doesn't go past 63psi.
Now comes the weird part.
I take off the wire for the stock oil gauge and then the nordskog gauge gets high numbers like it's running at 80 psi at idle. When I have both connected it's fine but the factory one shows really low. When just the factory one is hooked up it shows normal.
With the nordskog sending unit I get nothing all the way around. So I could have saved my g/f the money of buying a nordskog oil pressure sending unit and just used the stock one and had both gauges :shrug: