Oil Pres. Guage Interference?

[Tristan]

I finally got my oil pressure and water temp. guages installed. They are the Isspro EV series. My oil pressure guage seems to be picking up some interference from the tach or engine or? When I hit the accelerator it will jump up in sync with the tach then settle back to 15-20 psi where it was before. So where could it be picking up this signal and how can I get rid of it?:***:

 

[aaklingler]

Your oil pressure is supposed to rise as rpms rise, some what.

 

[Tristan]

Not like this. It is almost a quick flutter up to about 60 or so psi then back down to where it should be.

 

[argve]

Check your power and ground for the amplifier box. These need good clean power or all bets are off. Also where did you mount the oil pressure sender?

 

[Tristan]

I will try changing where I tapped in for power. However my temp guage and pyro are on the same power and working fine. Maybe the oil pres. is more sensitive?

The sender is hooked in with the stock sender between the two turbo feed lines. The one line comes up from beind the oil filter and hooks into the oil gallery with the two senders, then exits with the other line to the turbo.

 

[argve]

I originally read you thread as it jump up with rpms then if the rpms stay stable at say 1800 rpm the oil pressure drops. I think I read that wrong the first time around (I appologize as I was in a hurry the first time around) so let me see if I got this straight...

You burp the throttle meaning you rise the rpms and then let them fall and the oil pressure tracks with it correct? If so it's working just as prescribed. This is because the oil pump is mechanical and will pump more fluid with more rpms. Now since pressure is the resistance to flow meaning more flow through the same size hole creates more pressure then yes it will do this.