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NEED TO KNOW THE OUTPUT OF THE ALT. TO BATTERY

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  • Ford Master
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14 to 14.5

Posted on Nov 19, 2014

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Posted on Jan 02, 2017

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3 Answers

How do I test the alternator to determine if it's good?


Take the vehicle to a auto parts store , they check them for free .

Apr 21, 2017 | Cars & Trucks

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NEED TO KNOW THE OUTPUT OF THE ALT. TO BATTERY


You should get 13 to 15 volts output .

Nov 19, 2014 | 2000 Ford Explorer

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02 Camry charging circuity


great questions...!!!
no it cant, mine can.
most dmm do 20 amps
most cars do 100 to 500 amps. cranked.
the alt can do 50, some more.
yes, its all DC, and the best tool is a DC amp clamp meter for $50
the alt is AC inside, and DC outside, thus the name.
why jnot say context what are you doing.
i need to know your plans.
dead battery ever 5 hours.
car wont start
battery explodes.
wires melt.
what?

testing the ALT on car , takes some skills
alts. can in fact shut down even when 100% OK (it's loansome)

most folks never read the spec on the VR.
its can be very complex this.

cases in point.
open ground or big wire.
battery going open inside. (cracks in battery or a cell dries up)
over volage (over 16v)
battery shorts. or cables shorts.
cable opens or ground opens/
some newer cars the ECU is the VR. ! !!!!
older cars the charge lamp out , nets you no, start up exciton field current (born dead ALT)

to do this we must know what alt we have.
the FSM covers that as does ALLDATA.com

so here are the 1st test.
12.6v at battery means charged (resetted and not freezing)
13.3- 15v running means the ALT is working
i stall engine
and leave head lights on for 2 mins. or so.. battery was discharged.
so i start up with my amp clamp (DC) clamped on to the
ALT big signal wire, it shows me 40amps.
good.
if not bad.
as i watch it ,it can drift to zero (or to 5amps ignition power)
note polarity , - is drain + is charging.
depends on clamp orientation, that is why i use discharge test first.
+40amps?

need more ask.

Dec 27, 2013 | Toyota Camry Cars & Trucks

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Altenator good battery good starts then 3minute


CHECK ALT.OUTPUT AT BAT. WHEN THE LIGHT IS ON..SHOULD BE 14.5V...IF NOT YOU MOST LIKELY NEED AN ALTERNATOR.. VOLTAGE REG. IS IN ALT.

Mar 20, 2010 | Dodge Stratus Cars & Trucks

1 Answer

Need wiring diagram for 1967 camaro v8 changed from external regulator to alternator with internal regulator


I am assuming you are now using a 1976 style GM alt.
The most common and popular model.
You need one 10 gauge wire from the battery to the alternator output.
This can be run directly from the battery +.
Run a short 10 gauge wire from alt output to large wire at regulator plug on alt.
Run small wire on alt reg plug to Bat light wire.
A new alt regulator plug pigtail can be bought at any parts store and is recommended.

The existing regulator should have the connections marked.
One of those wires will be the bat light wire if needed.
If you have a amp meter or voltmeter in the vehicle.....use your existing large output wire (usually red) to hook up to the new alt output connection.

Sep 15, 2009 | Chevrolet Camaro Cars & Trucks

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What will cause a 1999 dodge diesel not to charge?? I have put new alt. on it and checked everything i know to check


How old are your batteries ? Diesels take a lot of juice to turn them over, I had a similar problem once, turned out to be the positive cable leading between the batteries.I would get a diagnostic on it to confirm your problem, could just be something simple.

Sep 01, 2009 | 1998 Dodge Ram 3500 2WD

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I'm driving down the road and my truck dies, i'll jump start it and it goes for a couple of blocks and dies again. i've had the alternator and battery checked and they say they're both ok. any suggestions


It could be that you are loosing a connection to main power on fuse panel but it is unlikely. In most cases if this is happening it is because the alternator is not charging. I know you will say you have had it tested but most testing procedures do not load test the alternator and does not show the amperage output of an alternator, they show voltage. In most cases there is not enough to back up the rate of charge and run the car so it dies again...

Aug 28, 2009 | 1986 Nissan Pickup 4WD 1986

2 Answers

Battery light on


It is possible that the extra demand placed upon the charging system finally blew the alternator.
You need to have the charging system checked,,or check the output yourself with a volt meter (should be around 14-15 volts) test must be done with the car running.
If the voltage reads up to 14 or 15 volts then it would indicated a short in the dash control circuit.

Jan 30, 2009 | 1990 Pontiac Bonneville

2 Answers

1995 ford 150, battery keeps losing power while running, alternator and battery checked out OK. battery cables and connections replaced still loses power.


Hi,
Ok then lets start right from the beginning, what to check for:
-- loose battery connection pos and neg
-- loose or broken wires on the alt
-- loose alt belt
-- you said that you had the alt and battery tested? that was a load test?
-- battery could be just no good even if its new, that's why I asked if a load test was done, and the output of the alt is ok?

Try these please let me know then we can go from there.

Cheers

Sep 15, 2008 | 1984 Ford F 150

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