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| 94-98 Non-Powertrain Discussion of 94-98 Topics Not related to the Powertrain...NO ADVERTISING |
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11-01-2009, 04:25 PM
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#1 (permalink) |
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Newbie
Join Date: Oct 2009
Location: East Hampton, CT
Posts: 22
Thanks: 6
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1995 Ram Not Charging
Hello Everyone, Well I've been very busy changing out brakes and fluids and just when I though I was near the finish line the charging system is not working. The batteries are good. When running the voltage across the batteries is only 12.5. As soon as I turn on the lights the voltage goes to 11. I've replaced the alternator, and checked all the fuses. I'm thinking the pcm is dead. Anyway other than replace to verify root cause?
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James 1995 Dodge Ram 2500 4X4 Auto GVWR 8800 D60 248mm Frt / D70 267mm Rear with 3.55 ratio / Ext Cab 8 Foot Bed / 241 Transfer Case / 47RH Trans / 175K miles |
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11-01-2009, 05:46 PM
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#2 (permalink) |
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Diesel Head
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 3,853
Thanks: 0
Thanked 76 Times in 62 Posts
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The PCM uses a tach signal (from the ESS on the dampner) to 'tell' it that the engine is running. Without this signal the PCM will not function. Is the tach working properly?
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97 Ram 2500 / 5.9ctd /NV4500/241DHD Custom Intake Tube+ BHAF, Pump Tuning, Autometer Pyro and Boost gauges, Dual 4" stacks, 33x12.5 Mud terrains, posi-lok, One Hella sound system, tons more to come 
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11-02-2009, 10:11 AM
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#3 (permalink) |
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Newbie
Join Date: Oct 2009
Location: East Hampton, CT
Posts: 22
Thanks: 6
Thanked 0 Times in 0 Posts
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Unfortunately the tach is working.
__________________
James 1995 Dodge Ram 2500 4X4 Auto GVWR 8800 D60 248mm Frt / D70 267mm Rear with 3.55 ratio / Ext Cab 8 Foot Bed / 241 Transfer Case / 47RH Trans / 175K miles |
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11-02-2009, 11:22 AM
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#4 (permalink) |
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Cummins Nut
Join Date: Nov 2008
Location: kc,mo
Posts: 432
Thanks: 1
Thanked 31 Times in 30 Posts
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Alternator external regulator how to 89-02
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86 C/20 w/94 12v 420k miles http://www.cumminsforum.com/forum/cu...chevy-2wd.html 92 W250 just got it |
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11-04-2009, 03:19 PM
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#5 (permalink) |
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Newbie
Join Date: Oct 2009
Location: East Hampton, CT
Posts: 22
Thanks: 6
Thanked 0 Times in 0 Posts
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Computer Replaced
Installed my new computer last night and I'm back in business. Autozoo sells the computer for $233 with a core charge. Not too bad. A couple more items to fix and off to inspection. Yeah! 
__________________
James 1995 Dodge Ram 2500 4X4 Auto GVWR 8800 D60 248mm Frt / D70 267mm Rear with 3.55 ratio / Ext Cab 8 Foot Bed / 241 Transfer Case / 47RH Trans / 175K miles |
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