JG FENCING

i just bought a 1998 dct 12 valve with 280,000 miles and the oil pressure gauge will drop to zero and the check gauges light pops on. it does this when i am driving at normal speeds. i hope this is just the gauge and not the oil pump. has anyone else had similar problems? any help would be appreciated.


Bought new:
2006 CTD, Quad Cab, 4x4, 6 speed manual, dually
Jacobs exhaust brake
B & W turn over hitch w/ Prodigy brake controller
51,xxx miles

Just bought:
1998 12v CTD, regular cab, 5 speed manual, 2wd, dually
With 9’ stihl walk in tool box

Towing:
20’ flat bed Mid Atlantic Gooseneck with hydraulic dump bed
14’ Easy Dumper
18’ tilt back flatbed

For fun:
1995 Jeep Wrangler w/ 33” baja claws
Lots of mods set up for the mtns
2003 Yamaha big bear w/ 29” tires
1982 jeep wagoner aka the “War Wagon” it goes anywhere and doesn’t matter what happens to it. 35” BFG soon to be 37” swampers

rnb_cattle

Call Jim Jessup 812-873-7618 (he is a retired Cummins Tech Center guy) who knows the 12v better than his own children. He works on these trucks daily all year long.

JG FENCING

thanks for the info. im calling him right now

crucescrawler

Mine had the same problems, i wiggled the wires around the oil press sender connection, and it stopped. It did it mostly on washboards and railroads X-ngs...hopefully that helps.

pro puller

Try a new oil pressure sender from cummins part # 3923200.

Kurt

JG FENCING

where is the oil pressure sending uint at?

pro puller

Behind the power steering pump in the side of the block.Look for the wires running to it.

Kurt

infidel

jacleh

I have the same loss of oil pressure problem, it happens on panic stops, bumpy road and slowing to a stop. My problem has been on going since the truck was new ( 98 12 valve Ram 2500) Dodge told me there was nothing wrong with the thing and replaced the pressure sender. I have installed a direct reading guage and it reads the pressure drop also. I am about to change oil pick up tube in the pan cause I heard somewhere they have a problem with cracks. If that don't work I guess I will go after the relief valve then the oil pump. Any suggestions out there??
Thanks
Jack