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12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

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  #1  
Old 06-08-2011, 07:21 PM
98cummins12's Avatar
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Default Idle issues/ Oil pressure

Cant seem to find the Idle Screw on my Truck. Also when i come to a stop my "CHECK GUAGES" light comes on and my oil pressure drops to 0! Im guessing it has to do with my idle being to LOW maybe? its idling about 600 rpm maybe a little less. Just want to know if the truck idling to low may cause the "check Gauges" light to come on?

98cummins12's Sig:2007 dodge ram 2500 4x4, SMARTY MADS PROGRAMMER, No CAT removed silencer ring.
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  #2  
Old 06-08-2011, 09:10 PM
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mine idles at 500 an doesnt do that. does it die?

captain_stabbin's Sig:94 Dodge 2500 2wd with 140hp lbdp injectors htt 66/71/14 turbo 5k gsk 60lb springs no plate 191 dvs 5in turbo back exhaust with 6in tip built auto

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  #3  
Old 06-08-2011, 10:02 PM
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Here's a link for changing your idle speed. Hopefully it will help.

Ram Diesel Problems

As far as the oil pressure deal, it sounds like your oil pressure sensor is going bad. It's a known issue on these trucks.

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*98 Cummins 12v, QC, SB, 2wd, 17* timing, DTT 47RE, HTB2 62/14, ATS Arc-Flow intake, ATS Exhaust manifold, DDP DV's, DDP Stage 4 140hp injectors, 3k GSK, #0 Plate, AFC mods, 5" Aussie stacks, gauges.
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  #4  
Old 06-09-2011, 09:50 AM
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No the motor doesn't die, it keeps idling as if nothing happens. The oil pressure just drops to 0 and the check guage light comes on!
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  #5  
Old 06-09-2011, 10:59 AM
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Originally Posted by 98cummins12 View Post
No the motor doesn't die, it keeps idling as if nothing happens. The oil pressure just drops to 0 and the check guage light comes on!
I'm not trying to be a smart a$$ but you do have enough oil in the motor right?

94 12valve's Sig:Dave

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  #6  
Old 06-09-2011, 12:10 PM
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Yeah bud, I actually checked the oil in it yesterday. Its always doen it even after the oil changes and stuff.
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  #7  
Old 06-09-2011, 04:13 PM
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X10 oil pressure sending unit $30 fix...
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  #8  
Old 06-09-2011, 04:55 PM
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Idle is set too low and you likely need an oil pressure sender which was already mentioned

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  #9  
Old 06-13-2011, 05:46 PM
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New 98 12V Cummins Oil Pressure Switch ... $35.... awesome

CUMMINS OIL PRESSURE SENSOR ('94-'98, 12V)-Dodge Cummins Diesel Truck Accessories – Geno’s Garage
CUMMINS OIL PRESSURE SENSOR ('94-'98, 12V)-Dodge Cummins Diesel Truck Accessories – Geno’s Garage
Dodge Cummins Diesel Truck Accessories – Geno’s Garage

zdanman's Sig:98 12v Cummins 4x4, 2.5" Level Kit, 315/75/16 Grabber A/T2s, 90 HP 7x9 SDX Injectors, #100 Fuel Plate ff, Starwheel ff, K&N intake, Banks intake manifold, 4" full MBRP exhaust with dual turnout stacks, 17* timing, Billet input shaft, Billet TC, Custom Rebuilt 47RE, BD Adjustable Wastegate (tuned @ 35psi), TC Lockup System, Kenwood head + 600W Alpine amp + 2 x Alpine 12s, Head Bolts at 120 ft/lbs
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  #10  
Old 06-15-2011, 12:57 AM
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awesome guys thanks!
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