oil pressure dropping - Dodge Diesel

LanceD · 03-22-2008, 05:13 AM

my oil pressure at idle seems to bounce around, it varies between the first line and 40. I take it the first line is 20 psi. is this normal? I don't remember it doing this before. under normal driving rpms its right at 40 constantly, so I don't think its a loose wire.

what can I check?

Dieselnick · 03-22-2008, 03:55 PM

The sending unit may be starting to fail.

Nick

LanceD · 03-22-2008, 05:56 PM

anyone know the easiest way to test it?

I was thinking of getting some kind of other gauge and hooking it into the other port on the filter housing. will this work?

renopker · 03-22-2008, 06:12 PM

thats the best spot to get at it ,and its 1/8 pipe

Stamey · 03-22-2008, 08:29 PM

I agree on the sender. Mine did soemthing like that too. I was worried until I hooked up the mechanical gauge to the same port. Also found that the electrical gauge is still way off, even with a new sending unit. My pressure at hot idle is 40, as measured with a mechanical gauge, but the electrical gauge reads 20.

Chris

03-22-2008, 03:55 PM	#2
Dieselnick Registered User Join Date: Dec 2007 Location: S. Oregon Posts: 281 My Photo Gallery My Classified Ads	The sending unit may be starting to fail. Nick __________________ '04 Ram 2500 CTD 305/555, 4" Magnaflow, CFM elbow, AEM intake w/S&B filter, FS-2500's motor/trans, Glacier 2 mic, Mag-Hytec TP '94 Ram 3500 12v 5spd straight pipe. On the way: Silverline 4", ATS elbow, S&B int. #8 FP, C&B alum. flatbed. '94 K2500 6.5T, BD exh, AFE intake w/S&B filter, Heath PMD. '87 Benz 300D Turbo, custom 3in exh. numerous old diesel big rigs.

03-22-2008, 08:29 PM	#5
Stamey Registered User Join Date: Jan 2002 Location: Powhatan, Virginia Posts: 2,660 My Photo Gallery My Classified Ads	I agree on the sender. Mine did soemthing like that too. I was worried until I hooked up the mechanical gauge to the same port. Also found that the electrical gauge is still way off, even with a new sending unit. My pressure at hot idle is 40, as measured with a mechanical gauge, but the electrical gauge reads 20. Chris __________________ Got TWINS? :D Artificial Intelligence is no match for Natural Stupidity. And by the way, I have an abnormal affection for my truck. My support group for this affliction is DTR Chapter #7 (like an alcoholic hangin' with his drinkin' buddies). [laugh] 1999 2500 CTTD, 4x4, QC, SWB, AT, loaded. What's my truck got? An obscene amount of torque, and an ATS tranny, repaired & upgraded with DTT parts. :rolleyes: PM me before you buy ATS. Tim Barber (TimInVa) is THE MAN! THANKS Tim! Now Overvalved AND Undervalved (got a 96 :D) http://www.Stamey.Info/Truck Are you a Diesel Head?

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03-22-2008, 05:56 PM	#3
LanceD Registered User Join Date: Oct 2003 Location: Albuquerque, NM Posts: 1,238 My Photo Gallery My Classified Ads	anyone know the easiest way to test it? I was thinking of getting some kind of other gauge and hooking it into the other port on the filter housing. will this work?

03-22-2008, 06:12 PM	#4
renopker Banned Join Date: Jan 2008 Posts: 210 My Photo Gallery My Classified Ads	thats the best spot to get at it ,and its 1/8 pipe