charging system - Automotive Wiring and Electrical


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drm
New User

Jan 14, 2009, 9:35 AM

Post #1 of 6 (1572 views)

charging system	Sign In

1997 dodge 2500 pick up 360 v8 auto
i have replaced the battery, the alternator,and the computor and i am still only producing 11.84 volts im lost!!!!!!

way2old
Veteran / Moderator
way2old profile image

Jan 14, 2009, 3:52 PM

Post #2 of 6 (1569 views)

Re: charging system	Sign In

If all fuses and all wiring is good, the only thing left is the voltage regulator. The only problem there is the regulator is built into the PCM (engine computer).

Being way2old is why I need help from younger minds

drm
New User

Jan 15, 2009, 4:42 AM

Post #3 of 6 (1565 views)

Re: charging system	Sign In

yes i realize the voltage reg is in the computor that is why if u read my post i put in a new computor a new battery and a new alternator.

Loren Champlain Sr
Veteran / Moderator
Loren Champlain Sr profile image

Jan 15, 2009, 5:16 PM

Post #4 of 6 (1553 views)

Re: charging system	Sign In

Are you getting 12V to the alternator? It's gotta have battery voltage to make it 'work'.
Loren
SW Washington

autojoe
User

Jan 17, 2009, 7:25 AM

Post #5 of 6 (1546 views)

Re: charging system	Sign In

the auto shut down relay(asd)supplies B+ to generator shoud be a dark green/orange wire.Make sure you have B+ at generator with ngine running.where are you measuring 11,84 volts?if you are getting 11.84 volts at battery+ then measure at generator output at generator.if good there bad wire from there to B+ or bad fusible link.If all is good then the wire from PCM to generator that controls the field(field driver in PCM)the wire may be bad.Would need labscope to scope signal on this wire but you could disconnect wiring from PCM and generator and do resistance to see if wire is good.also check all connections at generator.

(This post was edited by Jeff Norfolk on Jan 17, 2009, 7:55 AM)

jj
User

Apr 21, 2009, 4:27 PM

Post #6 of 6 (1437 views)

Re: charging system	Sign In

don't no if this well help but there was a charging fuse in the pdc i forgot which years

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