The oil pressure guage on my '01 quit working. Can anyone describe where the sending unit is located so I can get it changed out? Thanks!

 

Look here: http://www.dodgeram.org/tech/dsl/mt_...l_sys_comp.htm

 

Why don't you fit a mechanical gauge in the cab using the blanked off port on the top of oil filter housing, i expect it would be cheaper than a new sender unit and more acurate.

 

You are right about a mechanical guage being cheaper! I was surprised to find that my local parts store wants $260 . The main reason I want the factory guage to work is to get rid of the "check guages" light. I also have a full pod of guages already.
A bit of searching on this site indicated that Cummins would have one for much less. Hope that is the case.

 

If you add a mechanical gauge dont forget to add a needle valve to dampen the pulses. From what I have read on here the cummins oil pump isnt very smooth in operation and will kill a oil preasure gauge in short order when tapped of the oil filter boss.

 

I finally got around to changing out the oil pressure sending unit. It was only $75 from Cummins. This did not fix the guage though, and now the truck will start fine but has no power. Is it possible that the truck is in limp mode or did I get lucky enough to have the vp44 fail in the driveway? It's throwing these codes: 0622, 1765, 1693, 0522.
I replaced the fuel filter, not the problem. Lift pump has less than 10k mi. I suppose my next step is to check the fuel pressure after the filter to verify lift pump operation. I don't think that's the problem though since it started acting up as soon as I changed the oil sender.
Anyone have any ideas?

 

Check the plugs to all electrical sensors where you were working.
Something might have been knocked loose.

 

I looked around several times for anything I may have disturbed but found nothing obvious. I am wondering about the IP. Still one the original unit at 150k.

 

Did you check to make sure the oil pressure sending unit is a direct cross to the one dodge sells. I heard that cummins stopped stocking the sender that originally went in the dodge cummins because of to many failures and replaced if with a differant sender. Cummins uses differant oil senders per application.

 

RAM,
Looks like you are on the right track. I started another thread regarding the loss of power. Looks like the Cummins sensor was the wrong one. I got the truck running again but I still need to fix the oil guage. Details on the other thread.

 

I had my oil pressure sender go bad about a year ago, and did some research and found that it was covered under the cummins 5/100 warrenty through Dodge, so if your truck is still within warrenty you could check with the service writer and see if they would replace it under warrenty.

 

So were did the oil presure sending unit go

 

Oil pressure sending unit is just below the fuel filter and kind of forward of the starter. You can see it and reach it pretty easy if the truci is on a lift.
Just for giggles, If you hold down the odometer reset button and turn the key to run, you will see a Chec in the odomoter window. Watch all your gauges as the truck goes through a self test and will turn on all the dash lights and move all the gauges through the spectrum. It takes a few minutes for the older trucks to do this. My new 07.5 does it in about 10 seconds.
This is a good way to confirm the gauges are in working order. You can confirm you have oil pressure by cracking the line from the top of the oil filter to the turbo. If you make a holy mess, you have pressure. Then you can at least drive it till you get the sending unit.
I think Scheid diesel sells the sending unit for around $150, so you can save some money there.
Good luck.

 

sure you pulled the right sensor?