View Single Post
Old 08-09-2019
DonB's Avatar
DonB DonB is offline
Join Date: Jan 2008
Location: Eureka
Posts: 4,367

According to online forums with old silverleaf replies, the 55 psi only reading is standard with all Cummins engines beginning sometime before 2002. It is a switch, on or off, not an analog reading. One post by someone at Silverleaf in 2003 says:

Cummins orginally used a variable sensor which allowed the Silverleaf to read actual Oil Pressure. This switch had problems, it was causing Engine Shutdown, through false readings. So, Cummins went to a HardWired Switch which if your Oil Pressure drops to around 8 PSI or so, it will shutdown the engine.
The result is your Silverleaf will always READ 55 PSI, you could have Cummins change the Switch to the variable, but you take the chance of False Engine Shutdown.
Don Bradner
Current: No RV at this time
2015 Jeep Grand Cherokee
Prior: 2004 M380 Double Slide
Prior: 1990 WB40 "Blue Thunder"
My location:
Reply With Quote