Must be

 

Maybe its an Arkansas thing?

 

you never know. Im always saying NW AR and the rest of AR nothing alike. You should come see AR sometime.

 

Good pics and info thanks, I'll shoot you a pm and talk to you more about it.

Justin

 

Shane, what you are seeing is totally normal. You are seeing pressure straight off the pump. If you were to tie in where the sensor is you won't see the fluctuation. My daughters truck (98 12V) does the same thing. My truck (96) is also the same way.

 

I wasnt sure if the pressure should be bouncing around that much.


Thanks for the info bud

 

That's what mine does too Shane, 80-100 on cold start up, 60-75 on the road,20-30 at idle.My guage is connected in the same spot as yours. The minimum pressure is 13psi for these motors i believe.

 

New 98 12V Cummins Oil Pressure Switch ... $35.... awesome

CUMMINS OIL PRESSURE SENSOR ('94-'98, 12V)-Dodge Cummins Diesel Truck Accessories – Geno’s Garage
CUMMINS OIL PRESSURE SENSOR ('94-'98, 12V)-Dodge Cummins Diesel Truck Accessories – Geno’s Garage
Dodge Cummins Diesel Truck Accessories – Geno’s Garage

 

I had the same issues with my sending unit so i called dodge just to see what they wanted, and it turns out that for a 95, and maybe other year trucks the oil pressure sending unit for the diesel is the same as the gas...who woulda thought?? fortunately for me I still had my 1500 series parts truck with the 5.2 L and i took that sending unit out, put it in my 12 valve and it works great. I still ordered a new genuine one from Cummins, but I just thought that was interesting!

 

Replaced mine saturday and fixed my pressure gauge problem.

To replace it on a 98 you need a 1-1/16" Oil Pressure Sender Socket (long deepweld) for the new sensor. Advanced Auto carries it. The old one you just break off the plastic part and use a regular 1-1/16" socket.