alternator not charging - Dodge Diesel

mwolfe · 06-18-2007, 08:01 AM

i have a 1992 dodge diesel and the alternator does not charge, i have two alternators and both are good , also can not get any data out of computer any help would be appreciated. thank you Mike

nweaver916 · 06-18-2007, 12:22 PM

I think the 92 has the seperate voltage regulator? something like that, iirc it's a doghouse shaped unit on the firewall in the engine compartment.

I think it's built into the alt on the 93's (at least I couldn't find it in my truck...but the 'lectric is a mess in that one)

mwolfe · 06-18-2007, 12:24 PM

this truck does not have a external voltage regulator

John Faughn · 06-18-2007, 12:29 PM

The regulator is in the computer , but rarely goes bad .
Get a wiring diagram to look for fuses , fusible links , grounds - these are the most comin charging problems , do not for get to keep the battery cable clean .
Some guys put in an external regulator , I would only do this if the computer is bad & a cheap replacement is not available .

EClancy · 06-18-2007, 04:58 PM

id install an external voltage regulator ($17@napa) and be done with the factory stuff

wannadiesel · 06-18-2007, 05:22 PM

Check the crank sensor and the wiring to it.

06-18-2007, 12:22 PM	#2
nweaver916 Registered User Join Date: Apr 2007 Location: Utah Posts: 31 My Photo Gallery My Classified Ads	I think the 92 has the seperate voltage regulator? something like that, iirc it's a doghouse shaped unit on the firewall in the engine compartment. I think it's built into the alt on the 93's (at least I couldn't find it in my truck...but the 'lectric is a mess in that one) __________________ 93 W250, EGT and Tranny Gauges, 6" Lift, 35"x12.50x16.5 tires tooling down the road with a 4 horse trailer with a trio of BLM Mustangs!

06-18-2007, 12:29 PM	#4
John Faughn Registered User Join Date: Sep 2004 Location: St Paul , MN. Posts: 2,881 My Photo Gallery My Classified Ads	The regulator is in the computer , but rarely goes bad . Get a wiring diagram to look for fuses , fusible links , grounds - these are the most comin charging problems , do not for get to keep the battery cable clean . Some guys put in an external regulator , I would only do this if the computer is bad & a cheap replacement is not available . __________________ Build-12-93 Cummins WHC1 94 2500 4x4 SLT AT 3:55 265 R75 16 New Amsoil EAA cone air filter Amsoil 15-40 dualbypass found here about 01-05 DYNO at Mikes feb19 05 245.7HP 597TQ with coming out of lockup -so not sure about HP&TQ DiPrpocl trans temp EGT boost MBRP 4" alum exhaust Centramatics wheel balancers Solid Steel DSS track bar retro fit kit stabbed KDP

06-18-2007, 04:58 PM	#5
EClancy Registered User Join Date: Aug 2005 Location: over yonder back there Posts: 463 My Photo Gallery My Classified Ads	id install an external voltage regulator ($17@napa) and be done with the factory stuff __________________ formerly: (2) 1992 W250s: 1 getrag conversion, 1 518 the only good things were the engines, the dodge parts made me have to get rid of them........ now: 1997 Chevy K3500; 350, 4L80E

06-18-2007, 05:22 PM	#6
wannadiesel Adminstrator-ess Join Date: Mar 2003 Location: New Holland, PA Posts: 22,593 My Photo Gallery My Classified Ads	Check the crank sensor and the wiring to it. __________________ Faith '93 D350 - DPS 6x16's, HTT Stage IV/14wg, PowerStroke IC, Snow water/meth, Walbro 392, Con-FE, pump tampering by owner. 390 HP/800 TQ on #2 only, 413 HP/852 TQ w/ water/meth - needs more air! Dead KDP's = 72 wannadiesel@dieseltruckresource.com

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06-18-2007, 12:24 PM	#3
mwolfe Registered User Join Date: Jul 2006 Posts: 27 My Photo Gallery My Classified Ads	this truck does not have a external voltage regulator