Question about 1984 Ford Econoline

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ALTERNATOR JUST REPLACED STILL ONLY 12 VOLTS BEING RECIEVED FROM ALTERNATOR

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On fords you need a fully charged battery or you may burn up the replacement alt.

Posted on Oct 24, 2010

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Posted on Jan 02, 2017

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My Volvo s60 battery died jumped got it started let it run 10 mind tried again now nothing


Sounds like 2 possibilities, A) your alternator is not charging the battery or B) your battery is pooched.

To check your alternator, 1) without the engine running apply a volt meter to your battery, it should read somewhere around 12 volts. 2) boost the car, and with the engine running test your battery again, it should read approx. 14-15 volts.

If it reads 15 volts, your alternator is fine, and your battery is suspect, if it only reads 12 volts when running, then your alternator needs to be replaced.

Oct 17, 2015 | Volvo Cars & Trucks

1 Answer

My 2003 Bravada has "battery not charging" light, but car starts fine. Auto Zone tested battery...Fine. Said it was alternator, but how do i know?


Suing a volt meter check to see what the charging voltage is at the battery with the engine running. If you see more than 14 volts than the alternator is working. If you see less than 13 and most likely you will see 12, the alternator is not working. Next shut off the engine and make sure there is 12 volts on the large cable/terminal on the back of the alternator. If there is replace the alternator.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Sep 01, 2014 | 2003 Oldsmobile Bravada

1 Answer

Mondeo elproblem


May be but I doubt it. The alternator is not putting enough power to keep the light out. IT works like this battery power (12 volts) flows through the light to the alternator and puts it on when the alternator starts to charge the extra voltage from the alternator (14.5 volts) flows back through the light and as the 2 volts difference is not enough to make the light work it goes out . IF you are measuring 12 volts at the battery and 12 volts at the alternator then then the alternator is not charging. What you should have is 12 volts at the battery and as you rev up the engine the voltage should increase at the battery up to 15 volts maximum at around 2000 RPM

Jan 13, 2014 | Toyota Cars & Trucks

3 Answers

2000 chevy silverado. alternator problems. start truck and meter shows about 11 to 12 amps for a few minutes then goes up over 14. Did this for several days. today started and went right to 14 amps then...


amps or volts
11 to 12 amps indicates nothing but if it is volts then it indicates that the alternator is not charging the battery
Battery voltage is 12 -13.5 volts and when charging is 14.5-14.8 volts dc
the rest of your statement indicates that the alternator or voltage regulator is faulty and you should have the charging system checked by an accredited auto electrician

Feb 26, 2018 | Cars & Trucks

1 Answer

Code p0562


The code you have is an OBD2 diagnostic code P0652 whcich is a System Voltage Low. In shirt the engine ECM is telling you the voltage it is recieving (battery voltage) is too low or below specs.
Possible causes are: - Loose or missing alternator drive belt
- Faulty alternator
- Battery defective
- Open or short system voltage circuit
I would start by checking the battery and belts and possibly alternator. The are required to keep battery voltage at 12 volts or higher.

Sep 24, 2012 | Cars & Trucks

1 Answer

I have a old tow motor w/ a wisconsin air cooled engine . I'm looking to change the 6 volt system to 12 volt system. looking for a basic 12 volt wiring diagram for GM alt. and wisconsin parts?


to change the points to electronic you will need to get the manufacturer of the distributor and contact them for a compatible electronic kit to replace the points or replacement distributor
to fit an alternator , get one with an internal voltage regulator ( talk with an auto electrician for the best unit --it is not necessary to go big amperage units so one about 35-60 amps will suffice and cheaper as well)
wiring will be the same as will fuses (neither volt sensitive)
gauges will have to be changed to 12 volt units
bulbs changed from 6 volt to 12 bulbs and switches will be the same as they are no volt sensitive
basically the same circuit can be used and the only place to be careful is the alternator wire to the battery and the charge light or volt gauge ( auto electrician can advise here )
starter motor will have to be changed to 12 volts and you will again have to get the replacement unit from an auto electrician as the bendix pitch , movement and mounting neck will be critical
wisconsin did not make electrical components but used off the shelf companies such as delco remy, lucas , bosch, ac etc for the accessories to the engine
it is an interesting project so collect as much information from auto electricians and web sites to help you

Jun 06, 2017 | Cars & Trucks

1 Answer

Battery not charging light came on


Sounds like your alternator is the problem however get a mulitmeter and make sure your battery has 12-12.5 volts then start up you car the volts should go up 1.5 volts from the batteries original resting voltage when the cars running there should be 13.5-14 volts with the alternator running if theres no change with the 12 volt reading once the car is started replace the alternator....

Dec 07, 2010 | 2006 Isuzu Ascender

2 Answers

Will not charge. replaced alternator, and voltage regulator. fusible link is good. battery tests good


good the alternator you installed be bad? if it tests good then theres a fuse or a wire thats bad, check links at starter and battery and alternator if it has them there,start there, i would first have that alternator tested.good luck. also check wiring to regulator had problems with that!!!!

Nov 14, 2009 | Lincoln Mark VII Cars & Trucks

1 Answer

84 CK TRK, 2500, 5.7L 55,000 miles have replaced alternator twice - battery still reads 12 volts. Trickle charge on battery OK and engine starts up OK - terminal 1 on alternator wire (brown) reads 2.4volts...


On some of the older style GM's you can take that brown wire and cut it and take the end leading from the alternator and hook it directly to the hot terminal on the alternator and just leave it hooked up and it will work. But I have ran into the occasional problem where leaving it hooked up will drain the battery when the vehicle isn't running. Hope this helps..

Oct 24, 2009 | Chevrolet Silverado 2500 Cars & Trucks

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