still not charging - Dodge Diesel

big_country_001 · 12-16-2010, 04:06 PM

ive changed the altornator, crank positioning sensor and put the external voltage regulator on it and its still not charging, i even had the altornator checked bye 2 diffrent shops and its good, but when i put it on the truck its only putting out .61 volts? i need some help, thanks

Onemoparnut · 12-16-2010, 05:56 PM

How are you checking the alt output and only getting .61 volts? It takes more voltage than that to get it running. I am not sure what is wrong here try to explain in detail what and how you are testing.

wannadiesel · 12-16-2010, 06:22 PM

Start with the basics. Are you getting power to the big stud on the alt? Do you have power to the regulator and to one small stud on the alt? Is the case of the regulator screwed to a good ground?

big_country_001 · 12-16-2010, 08:01 PM

Yes im getting power to the small studs on the back, i put a votage tester on the big wire coming out of the bottom of the altornator on the back and its reading .61 volts but the small wires and the battery are reading 12.68 volts, and im testin the big wire with it desconected from the battery.

Onemoparnut · 12-16-2010, 08:14 PM

Test it with it hooked to the battery the voltage should be the same it takes voltage at that term for the alt to work.

big_country_001 · 12-16-2010, 08:18 PM

i did and it reads 12.61 or so then, but its still not chargin, when i turn the heater or head lights on the battery gauge drops alote. i also had the altornator tested on the truck and the shop said its not charging.

wannadiesel · 12-16-2010, 09:21 PM

Is the regulator case a good ground?

big_country_001 · 12-16-2010, 09:24 PM

Im not for sure but its bolted to the fender and the battery ground , but im going to add another ground to be sure

GLHS · 12-17-2010, 07:28 AM

Have you checked the wiring harness connection that is located about 1-2 feet away from the alternator and lays on/near the right fender?

I had a problem like yours and it turns out it had come loose after 15 years.

Unplug it and check for corrosion.

big_country_001 · 12-17-2010, 05:26 PM

ive checked and double checked, the altornator is not charging, everything has power and a good ground,

Jer12377 · 12-17-2010, 06:24 PM

I had this problem two summers ago. I tore harness apart, traced wires, and bought two new alternators. It was the wire going to the crank sensor was cut by the crank balancer rubbing on it. Check that wire. Wannadiesel saved me out from that one.

big_country_001 · 12-17-2010, 07:08 PM

i just put a brand new crank sensor on it

DodgeRam24V · 12-18-2010, 07:35 AM

Quote:

Originally Posted by big_country_001

Yes im getting power to the small studs on the back, i put a votage tester on the big wire coming out of the bottom of the altornator on the back and its reading .61 volts but the small wires and the battery are reading 12.68 volts, and im testin the big wire with it desconected from the battery.

the big wire on the alt voltage should match the voltage at the battery exactly.

I'm not to familiar with a 93, but all alternators work basically the same way. the big wire on the alt goes directly or indirectly to the battery

my 99 and 01 has a big fuse in the black box under the hood

12-16-2010, 05:56 PM	#2
Onemoparnut Registered User Join Date: Apr 2007 Location: Southern New Jersey Posts: 3,856 My Photo Gallery My Classified Ads	How are you checking the alt output and only getting .61 volts? It takes more voltage than that to get it running. I am not sure what is wrong here try to explain in detail what and how you are testing. __________________ Bill 91.5 D350 regular cab dually 3.54, Built 518,Goerend convertor,potentiometer, isspro tach, 60psi boost gauge, pyrometer, trans temp gauge, fuel pressure gauge, 4" de exhaust, bd killer b 63/68/14, arp studs, ported and polished head, 3 piece manifold, 366 spring, DennyT II, Half turn from runaway, dap 5x14's, grid heater delete, custom air box and bhaf. Fass and 1/2" fuel lines . 208,000 mi. Kdp killed.

12-16-2010, 06:22 PM	#3
wannadiesel Adminstrator-ess Join Date: Mar 2003 Location: New Holland, PA Posts: 22,593 My Photo Gallery My Classified Ads	Start with the basics. Are you getting power to the big stud on the alt? Do you have power to the regulator and to one small stud on the alt? Is the case of the regulator screwed to a good ground? __________________ 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

12-17-2010, 07:28 AM	#9
GLHS Registered User Join Date: May 2006 Location: Brighton CO and Cheyenne WY Posts: 724 My Photo Gallery My Classified Ads	Have you checked the wiring harness connection that is located about 1-2 feet away from the alternator and lays on/near the right fender? I had a problem like yours and it turns out it had come loose after 15 years. Unplug it and check for corrosion. __________________ 1992 W-250 ext. cab 5 spd, 3.54, SPS 62/71/14, 46 psi max, ported ATS manifold, Joe Hellmann intercooler, 4" into 5" exhaust, Giles fuel pin, DDP custom injectors, Air Dog, Banks 3rd gen High Ram, Icebox CAI, timing 2.15 mm, Fluidampner, South Bend 13" 4 puck single disk, Snow water/meth, 02 16x8 alum. wheels on Dana 80 w/disks, 455 hp/1005 trq uncorrected, 13.34 @ 102, Denver CO, Bandimere 5800 ft. in July 06. 472 diesel/520 water/meth May 08

12-17-2010, 06:24 PM	#11
Jer12377 Registered User Join Date: Mar 2008 Location: North Haven,CT "Living in occupied teritory" & Barton,VT Posts: 331 My Photo Gallery My Classified Ads	I had this problem two summers ago. I tore harness apart, traced wires, and bought two new alternators. It was the wire going to the crank sensor was cut by the crank balancer rubbing on it. Check that wire. Wannadiesel saved me out from that one. __________________ 1993 W350 5spd Flatbed.... ARP studs, pyro&boost gauges, head temp gauge, Dynamax muffler, Denny T pin, Linkage moved, 366 spring, AMSOIL BHAF, stock air box removed, Dana 80 with an ARB air locker, PS intercooler, HE351CW-custom 3" intake tubes, 4" exhaust pipe, 7x010 Contagious Diesel Injectors in the mail & custom York on-board air in the works...... 2002 3500 4x4, auto, 24valve- Dads truck-now with LOTS of mods

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12-16-2010, 08:01 PM	#4
big_country_001 Registered User Join Date: Nov 2010 Location: Kansas for now Posts: 50 My Photo Gallery My Classified Ads	Yes im getting power to the small studs on the back, i put a votage tester on the big wire coming out of the bottom of the altornator on the back and its reading .61 volts but the small wires and the battery are reading 12.68 volts, and im testin the big wire with it desconected from the battery.

12-16-2010, 08:14 PM	#5
Onemoparnut Registered User Join Date: Apr 2007 Location: Southern New Jersey Posts: 3,856 My Photo Gallery My Classified Ads	Test it with it hooked to the battery the voltage should be the same it takes voltage at that term for the alt to work.

12-16-2010, 08:18 PM	#6
big_country_001 Registered User Join Date: Nov 2010 Location: Kansas for now Posts: 50 My Photo Gallery My Classified Ads	i did and it reads 12.61 or so then, but its still not chargin, when i turn the heater or head lights on the battery gauge drops alote. i also had the altornator tested on the truck and the shop said its not charging.

12-16-2010, 09:21 PM	#7
wannadiesel Adminstrator-ess Join Date: Mar 2003 Location: New Holland, PA Posts: 22,593 My Photo Gallery My Classified Ads	Is the regulator case a good ground?

12-16-2010, 09:24 PM	#8
big_country_001 Registered User Join Date: Nov 2010 Location: Kansas for now Posts: 50 My Photo Gallery My Classified Ads	Im not for sure but its bolted to the fender and the battery ground , but im going to add another ground to be sure

12-17-2010, 05:26 PM	#10
big_country_001 Registered User Join Date: Nov 2010 Location: Kansas for now Posts: 50 My Photo Gallery My Classified Ads	ive checked and double checked, the altornator is not charging, everything has power and a good ground,

12-17-2010, 07:08 PM	#12
big_country_001 Registered User Join Date: Nov 2010 Location: Kansas for now Posts: 50 My Photo Gallery My Classified Ads	i just put a brand new crank sensor on it

12-18-2010, 07:35 AM