2002 Ultimate Freedom Oil Pressure Gauge Issue

[Scinta55]

Hello curious if anyone has this issue when I start the RV no issues drive it for about an hour get to my destination as it’s idling The oil pressure goes to zero but as soon as you Hit the gas pedal Over 100 RPMs the oil pressure gauge goes back up. Then sometimes I have to shut the RV off and on like 10 times to get the electric issue to stop doing that while hitting the pedal It is an electrical issue. Just curious if anyone has the other this going on it does have oil pressure checked with another gauge and replace the Sensor already once. Also, if you throttle the pedal, the oil pressure does not move at all. It stays at a constant 55 psi on The gauge

[Ray,IN]

The oil pressure is not right with my gauge either. It idles at 80 psi when cold, increase RPMs to 1,000 and it pegs the gauge.
Cummins says oil pressure when hot should be,
Engine Ratings
Advertised hp @ rpm Peak Torque lb-ft @ rpm Governed Speed
240 - 330 660 - 950 @ 1300 2200-2600

Maintenance Schedule (CAPS or HPCR Fuel System)
(Why Fleetguard Filters?)
Oil Filter 15,000 Miles, 500 Hours, or 6 Months
Fuel Filter 15,000 Miles, 500 Hours, or 6 Months
Valve Adjustment 150,000 Miles, 5000 Hours, or 4 Years


Filter Part Numbers (Fleetguard Numbers)
HPCR (03 & up) CAPS (98-03)
Oil Filter LF9009 LF9009
Fuel Filter (Water Seperator) FS1003 FS1022
Fuel Filter LF9009 FF5488


Useful Specs (CAPS or HPCR Fuel System)
Intake Valve Clearance .012"
Exhaust Valve Clearance .022"
Engine Brake Clearance .090"
Firing Order 1-5-3-6-2-4
Oil Pressure 10psi (Idle), 30psi (Rated RPM)

Fuel Pressure Specs (Minimum)
HPCR CAPS
Lift Pump 5 psi Cranking 5 psi Minimum
Gear Pump 10 psi Cranking
70 psi @ rated speed 10 psi Cranking

[Scinta55]

Yes, I believe mine to be the electrical as mine is running the gauge and the dash does not even move at all it stays at a constant 55 If you hit this throttle or not, then if you shut the key off, it stays at that sometimes also

[Ray,IN]

Originally Posted by Scinta55

Yes, I believe mine to be the electrical as mine is running the gauge and the dash does not even move at all it stays at a constant 55 If you hit this throttle or not, then if you shut the key off, it stays at that sometimes also

For got to say,
Under the dash you should find a gauge module that controls all the 12V gauges. I've seen pictures of it, but never had to deal with any gauges_yet.
If you have a Cummins ISC engine the oil pressure sending unit is quite expensive; I'm told a pressure sending unit for a 6.7 fits and works OK. If mine ever fails I'll try one to see.

[Scinta55]

That’s what I did for a oil pressure sensor/sender. I guess I’ll have to find that module and see if it has corrosion or something on it.

[Ray,IN]

I found this old irv2.com thread that might be informative: https://www.irv2.com/forums/f25/spar...es-477836.html
Use the google search box at page top there to locate more such threads.