Have a 2005 Dodge Ram 1500 5.7 Hemi, alternator not holding a charge so it is draining the battery. replace alternator 2 times. was told that the regulator is inside the PCM. What can we do?

Asked by Sep 03, 2013 at 05:24 PM about the 2004 Dodge Ram 1500

Question type: Maintenance & Repair

1 Answer

217,725

The alternator doesn't hold a charge, the battery does. With the truck running, what is the voltage across the battery, should be 14v or more. If it is, the alternator is working fine. The voltage Regulator is in the alternator. Seems you have a electrical draw/parasitic drain on your battery. You will need to do some investigative work by pulling fuses, looking for loose, cut wires, corrosion and probing for continuity. I suspect you might be better off having someone who is good with Auto Electrics to diagnose it for you, it can be very time consuming and frustrating if you don't know what you are doing.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • 2005 Dodge Ram 1500 Won't Start 74 answers

    This is crazy but my 2005 Dodge Ram 1500 with 19,500 miles on it won't start. It won't turn over...no clicking...nothing...nada!!! Turn the key and it appears to have full power as the radio comes o...

    2005 Dodge Ram 1500

    -

    Maintenance & Repair

  • 97 DODGE 1500 TRUCK ALTERNATOR NOT CHARGING P743, P1765 4 answers

    rEPLACED ALTERNATOR , BATTERY, STILL DOESN'T CHARGE AND HAVE P0473 AND P1765 CODES. FIRST GEAR WORKS FIRST TIME YOU TAKE OFF BUT WON'T GO INTO 4TH THEN IT STARTS TO DIE

    1997 Dodge Ram 1500 2 Dr Laramie SLT 4WD Standard Cab LB

    -

    Maintenance & Repair

  • Why is my charging system is not working? How can I fix it? 7 answers

    The battery and alternator both tested good. The alternator fuse is good. Even Replaced pcm. Yet no luck. What am I missing? Please help.

    1994 Dodge Ram 1500 2 Dr Laramie SLT Standard Cab LB

    -

    Maintenance & Repair

  • truck wont stay running 84 answers

    I have a 2001 dodge 1500 pickup. The truck fires right up but will not stay running unless I keep my foot on the gas. As soon as I let off the throttle it dies instantly without sputtering. Gauges rea...

    2001 Dodge Ram 1500

    -

    Maintenance & Repair

  • Hemi MDS 228 answers

    I was wondering if anyone other than me absolutely hates the MDS system in their Hemi engines. Does anyone know how to disable it without having to by a Diablo Predator tuner? I know you can cut and c...

    Dodge Ram 1500

    -

    Car Customization

Search Dodge Ram 1500 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Dodge Ram 1500 Experts

#1 Dan Connell
Dan Connell
Reputation 5,690
#2 pudgybear
pudgybear
Reputation 5,300
#3 dandyoun
dandyoun
Reputation 4,940
View All

Related Models For Sale

Used Ford F-150
3,023 Great Deals out of 207,755 listings starting at $1,000
Used Chevrolet Silverado 1500
2,515 Great Deals out of 152,117 listings starting at $1,500
Used Dodge Ram 2500
158 Great Deals out of 5,617 listings starting at $2,950
Used GMC Sierra 1500
974 Great Deals out of 60,125 listings starting at $1,299
Used Toyota Tundra
660 Great Deals out of 28,287 listings starting at $2,798
Used Toyota Tacoma
707 Great Deals out of 31,948 listings starting at $2,750
Used Ford F-250 Super Duty
490 Great Deals out of 43,316 listings starting at $1,900
Used Dodge Dakota
131 Great Deals out of 4,336 listings starting at $995
Used Nissan Titan
248 Great Deals out of 15,813 listings starting at $3,000
Used Dodge Ram 3500
98 Great Deals out of 2,338 listings starting at $5,000
Used Ford Mustang
534 Great Deals out of 42,736 listings starting at $1,699
Used Chevrolet Tahoe
820 Great Deals out of 27,815 listings starting at $1,700

Used Cars For Sale

2010 Dodge Ram 1500 For Sale
77 Great Deals out of 1,473 listings starting at $5,995
2009 Dodge Ram 1500 For Sale
46 Great Deals out of 1,253 listings starting at $6,000
2008 Dodge Ram 1500 For Sale
83 Great Deals out of 1,719 listings starting at $2,995
2007 Dodge Ram 1500 For Sale
63 Great Deals out of 1,606 listings starting at $2,421
2006 Dodge Ram 1500 For Sale
84 Great Deals out of 1,533 listings starting at $2,899