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Does anybody know how much voltage the ecm should be sending to the lp???????... JOIN NOW TO REMOVE TRACER

Lift Pump Voltage????

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Old 12-02-2012, 02:56 PM
Diesel Fan

Default Lift Pump Voltage????

Does anybody know how much voltage the ecm should be sending to the lp???????

Bigmark65's Sig:1999 Dodge Ram 2500 Short bed 4x4 5sp! BHAF, 6in lift, South Bend Clutch, The rest bone stock, But not for long!
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Old 12-03-2012, 01:21 AM
lauber_03's Avatar
Diesel Enthusiast


i want to say the ecm puts out right around 12 volts. it closes the relay and then the lp receives power from its source ( my relay closes to receive power from batteries)

lauber_03's Sig:02 ext cab 4x4 short bed - SOLD
2012 cclb 6 speed manual mbrp 4in exhaust, s&b intake, 6 inch fabtech lift and 37's.
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Old 12-03-2012, 07:44 AM
Diesel Enthusiast


I'll say 12v also

chadcycle 2500's Sig:2001 Ram 2500 4WD,4.10'sFass lift pump,ATS Copilot,Glowshift gauges.K&NColdair,Bigger boost elbow, Gearvendor overdrive,(now in!) custom lock up & overdrive control switches, 4in exhaust,rv275 injectors,ats pulse manifold,superB turbo ARP head studs,.020 mahle pistons, clevite bearings,block deck surface planed, KDP, red head steering box,2010 steering
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Old 12-03-2012, 11:45 PM
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Should be system voltage, less 0.2 volt or so.

RAW's Sig:2014 RAM2500 Larimie, 5" turbo back, EGR Delete, EFI Live tuning by HardWay

SOLD: 2001 RAM2500, 5.9L Cummins. EJWA CTS/Smarty, 150HP BigDawg Injectors, HotRod VP44, 5" exhaust, FASS HD150 w/Vulcan DSV, HX35/40 over S471, Colt "Big Stick" Cam, S&B CNC Intake Elbow, O-Ringed head, 110# valve springs. Built 47RE. D80 w/discs. Espar Hydronic 5.
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