Question about 1995 Dodge Ram 3500

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Wiring problem my dodge 1ton rpm gageswont work and it wont charge i haved changed batteries brain and alt.

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Sounds like where the wiring goes through the firewall needs to be checked out or if you have a amp gauge in the dash the back could be burnt also check ballast resistor

Posted on Dec 08, 2008

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New battery new alternator battery still wont charge ??


91 , (is the charge lamp glowing key on, (shoe drops)?????
there are many ways to make it stop doing 13.3v to 15vdc running,
lots. ill list them all..
the 2 stated. in blue above. and.
1: bad dash lamp this lamp boot staps the field current or the alternator is born dead. so is it dead key on, , yes, BINGO.

2: bad alt ground, or starter top bolt , ground to battery bad or loose.
3: bad wires to the rear of alt. all 3.
4: bad battery cables. (or just corroded ends or conn. wrong)!!!
5: alt belt loose or missing.
6: engine hot RPM not 750 to 850 Rpm if 500 BINGO.
and more.
http://www.fixkick.com/Charging/charging.html

here is the drawing.
IS the sense wire is dead, not 12vdc.???

http://www.fixkick.com/Charging/charge89.jpg


the reg inside can shut the ALT down for.
over voltage
over current.
or if it THINKS(sic) that the batter internal resistances is too high. for ANY REASON what so ever. it will shut down
these protections prevents the ALt. from blowing expensive electronics (all of it) to kingdom come. $$$$$

its a feature.

Jul 08, 2014 | 1991 Suzuki Sidekick

1 Answer

I have a 2000 dodge stratus. Battery light was on for two weeks then the gages and radio started to twitch we tested both battery and alternator both have been changed we took it for a test drive...


ok that is NOT a battery light, its a CHARGE light!
it comes on and means the battery is not CHARGING.
(the pcm knows this for a fact, in fact IT turned the lamp on.... a key fact.)
any shop can measure the voltage and tell you that in 5 min flat.
he'd
  1. open hood, measure battery, ah, 11vdc. so he jumper starts engine. it starts (cables removed now)
  2. the meter back to battery terms, and its not 13.3 to 15vdc.
  3. he saw 11v. running. oops. that is WRONG.
  4. so he now knows the alternator is bad, or the alternator hates the battery,(can happen)
  5. on ours we can hot wire the alternator to see it go full on, this is called FULL FIELDING and ALT, i dont teach you that, because you will hurt yourself or car.
  6. The PCM on many cars runs the alternator, in fact there is on inside alt, regulator the PCM does that. so can be bad.
  7. if you had before tested your old battery it would have passed.
  8. if you had tested the old alternate (free in any auto store) it too would have passed, (now they are new) so that leaves wires and and last PCM bad.
  9. your pcm pin C1-8 conrols ALT pin 2. field . at all times.
  10. that wire is dark green.
  11. the alternator is very tricky here( pcm brain side) it will drop the battery charging off line if the battery cables are bad. or any wires related to battery cables, grounds or bad wiring on rear of ALT.
  12. the Same is true if the PCM thinks the battery is shorted or open or has insane internal high resistance. (bad batteries)
  13. for current overload, and for OVER VOLTAGE.
  14. that is about it. there is more, but that is all covered in you missing FSM.

Jul 03, 2014 | Cars & Trucks

1 Answer

My 1994 honda passport will not stay charged new altnator and new battery


is the engine running at 800 rpm or more.
if engine RPM is way low the Alternator will die out.
trans light , where is that? name it. exactly
lets focus first on the engine, and RPM
does the dash have a tachmeter, ? yes, then use that.
we keep a hand tachometer (optical , ready for no tach cars)
RPM is everything.... maxwells laws. and such.
1: rpm 800 or more all the time. rule 1, do not skip this.
2: belt to ALT not slipping'
3: battery good. terminals on battery cables tight both ends and
NOT PACKED in green corrosion, .
4: alternator case is grounded good.
5: The connection and ALT, all good.
6: you key on, and the dash charge light must turn on,
if not fix that now, on old cars, the dash light , causes the ALT to self excite, if the lamp burns out the alternator boots up DEAD.
or fails every other car starts. (does)
7: new alt is the wrong alt. zillion wrong ones, only 1 works.

Jan 30, 2014 | 1994 Honda Passport

1 Answer

Charging system voltage low


there are only 3 parts. but the causes are 25 or more.
1: belt missing slipping,
2: engine rpm below 800 RPM (lots of ways ,ask )
3: ALT had.
4: wiring to ALT bad.
5: bad battery or its connections, (wires)
6: bad fuse. see fuse link a11? on fFM page 20?
7: car is PCM alt controlled, it can be bad too. see 2 field wires on ALT and PCM on page 20? below?
8: battery temp sensor bad. making PCM think battery overheats.
the fSM covers all tests above.

pick car here, then pick charging.
5 alternators used on the 5 diffr.engines. got the wrong one?

the see wiring diagrams at end and chapter 20 inside, charge.
pdf page 118 for gas engine, if diesel next few.

Jan 07, 2014 | 1998 Jeep Cherokee

1 Answer

84 dodge wont charge battery


hook a test lit at the alt big wire this wire must be hot all times and most of the times is protected with a fusible link prone to burn when hooked backward

Dec 22, 2013 | Dodge Cars & Trucks

1 Answer

95 Geo Prism head lights, dash board lights go dim, slows in power, check engine light comes on.


does the alt light glow, keyon (aka. chargelamp)? if not BAD !
fix that FIRST !
This is really simple in most cases.
it's a system, called a charge system.
it has 3 /4 parts.
1: Alternator must spin about 2 times crank speed.
if the engine RPM is 400 , the Alternator will give UP.
so first engine RPM 800 then i strobe the alt pulley, oops belt slips, mine runs at 1.8 ratio or 1400 rpm at alt pulley.
for a DIY is the belt tight?
2: is engine RPM at 800? no , fix that first.
3: RPM good.
The system now is ALT wires and battery. 3 things.
if the ALT is good and the battery is good (tested)
then it must be what. the wires.
The alt can put out 50+ amps..
there are at least 4 wires on most alts and any can fail.
1: big red. (huge charge wire,, or the inline fuse blown.
2: ground, old cars , and for sure in the SALT belt the gound fails
do to RUST, or better word, Corrosion and both.
alum and steel (iron) both corroded, add salt and its worses
in 2 ways corrosion and electrolysis. (google that)
so the ALT case must be grounded to the engine. 100% perfect
then engine ground stap to battery minus. if not the ALT will FAIL.
now we land on 2 more wires, most cars.
that rear connector.
1 is ignition sense wire, if open alt goes nuts.
2: is the idiot lamp. if lamp is bad, (dead) the alt can shut down.
this lamp creates boot up , initial excitation current, so the ALT can start up. most ALTS have no residual magetism to start up.
so it needs a bias circuit, to do that.
and guess what, each brand of ALT uses different parts here.
EVEN REBUILTS, so best practice, is to assume the lamp
must be good, and fix that first (early cars, ) new cars the ECU
runs the alt and is 10x smarter, not this car. at all.

no lie , testing the alt, in car is hard.
many times the ALt just shuts down. (faults)
and with zero current flow, you can not find the voltage drop
that precipitate that fall out/
there is a method but is risky , on car, called "full fielding"
it can blow up electronics,. so that is my warning.
does this help?

one other crazy failure
some cars have DRL , in uSA , some, in canada , many.
i fix them all. but the DRL in many cars, (this year)
connects the alternator, and DRL burns up and kills the ALT.
the reason DRL uses the charge lamp is easy
it shuts down DRL any time the Charge lamp is dead.
allowing more battery volteage (& current) to start, HEADLAMPS off.
same with cruise control some drop out , if change lamp is on.
to understand all this , its all in the manual. (parts effected)
at alldata dot com.

Aug 02, 2012 | 1995 Geo Prizm

1 Answer

1979 dodge d-150 truck .. The battery wont stay charged we have put new battery, wiring harness, voltage regulator, alternator and coil what else could be the problem


I can only guess here but clean your wires going into the bat terminals, also check for a light that may be stuck on when it is parkes such as trunk engine or glove compartment.. since you did all these things also check the alt/charge fuse

Dec 10, 2010 | Dodge Ram 150 Cars & Trucks

2 Answers

Light stays on . i have a new alt and new battery and new wire leading from battery to starter to alt. if i disconect the battery the car dies. the alt was bench tested and puts out 15.1 volts yet wont...


Check the drive belt tension and wiring connection at the alternator and at the battery. Check for a blown fuse in the fuse block . -hope this helps

Feb 24, 2010 | 1985 Cadillac DeVille

2 Answers

The alternator wont charge and all engine lights come on and rpm


I had the same problem, my 99 ram 2500 wouldn't charge and I one day after spending 1500.00 on it at a dealer reached up behind the altinator wiggled the wire & plug, low and behold the thing **** into charging.. cost of new alt. wire plug 35.00....from dodge dealer..

Jun 26, 2009 | 2001 Dodge Ram 2500 Truck

2 Answers

Losing charge


are the starter motor wires loose?

Jan 06, 2009 | 2003 Ford Focus

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