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What should the 24 volt alternator be putting out for voltage

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6ya6ya
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Posted on Jan 02, 2017

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bump425c
  • 16 Answers

SOURCE: 1984 Ford F250 5.8L 2

This is not rare. Possibly bad "new" alternator or bad "new" regulator. Have seen it happen many times. :-)

Posted on Jan 07, 2009

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bunnydawg
  • 5158 Answers

SOURCE: alternator putting out 16.5volts

or and more likely... the voltage regulator either mounted on the alternator or on the wheel well is defective.

Posted on Feb 26, 2009

  • 142 Answers

SOURCE: 12 volt alternator putting 24 to 48 vols

Try another multi-meter or change the settings... 12V alternators cannot produce 48V.

Posted on Jul 02, 2009

  • 138 Answers

SOURCE: Low voltage

what is the condition of the battery cables you are probably onto something about a ground but i dont think your ground issue is going to be at the batteries you may not have a good ground on the alternator. The next thing I would check is ... the alternator itself do you know that you are getting between 13.6 and 14.2 volts out of the alternator, a under charge or a overcharge condition both are bad for batteries.

I would check alternator output first if it is not within the above range you need to replace it

If the alternator is putting out in the range of 13.6 to 14.2 then you need to look elsewhere... you may have something draing the batteries overtime interior lights, electric brake controller for trailor brakes if equipped sound system if anything is getting power without going through a switched circuit this could also be your cause.

hope this helps

Posted on Aug 23, 2009

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  • 1 Answer

SOURCE: Alternator voltage drops to twelve volts whenever

MINE HAS THE SAME PROBLEM! that answer didnt tell me anything.

Posted on Dec 09, 2009

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1 Answer

Battery keeps going dead


24 volts is way to high, the battery should be 12 volts, the alternator should put out 13 volts up to 15.5 volts, if the alternator belt is excessively loose, it wont charge properly, if the belt is tight check the alternator output, (you can ck it at the battery) make sure the output is a minium of 13 should be not less when reving the engine up a little the voltage should increase, but not above 15.5 volts

Apr 12, 2014 | Cars & Trucks

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

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2004 sprinter headlights keep blowing out


Hi, what voltage is the alternator putting out? Put a voltmeter across the battery - it should be reading between 13.8 to 14.4volts. Any more than this and the regulator unit on the alternator is likely to be faulty. Normally a cheap fix

Aug 25, 2012 | 2004 Dodge Sprinter

1 Answer

2005 lincon aviator charing system 12.2 volts after alternator install


check the black/orange wire at the alternator for battery voltage if no power check the fuesable link ( A )

check the orange/light blue wire at the alternator for battery voltage if no power check the fuesable links ( B & C )

check the light green/red wire for 12 volt with the engine running if no power replace the PCM.

if all wires have the proper voltage then replace the alternator

GOOD LUCK

Dec 31, 2011 | Oldsmobile Aurora Cars & Trucks

2 Answers

How do I determine if a battery is bad or its the alternator?


check voltage at battery with engine running. If voltage is less than 14 volts, alternator is bad.

Dec 09, 2010 | 2003 Toyota ECHO

1 Answer

Charging sytem light came on but battery and alternator are brand new.


CHECK ALTERNATOR VOLTAGE OUT PUT AT BATTERY USING A DIGITAL VOLTMETER.WITH ENGINE RUNNING IT SHOULD BE 13.5 TO 14.5 VOLTS.IF NOT YOU HAVE A BLOWN ALTERNATOR FUSE.OR DAMAGE WIRES TO ALTERNATOR.IF VOLTAGE IS OVER 15 VOLTS NEW ALTERNATOR HAS FAULTY VOLTAGE REGULATOR.

Sep 29, 2009 | 2001 Ford Windstar

2 Answers

Produce 24v 300amps of power from alternator w/out car engine


Yes, BUT, you better have a battery, or batteries installed in the system, that add up to 24 volts (I assume this 24 volt alternator has a built-in voltage regulator?)

If there isn't anything to 'tell' the voltage regulator, to just put out the needed voltage to keep 24 volts running smoothly, it will put out way more than that, And BURN up!

Aug 07, 2009 | Rolls Royce Camargue Cars & Trucks

1 Answer

12 volt alternator putting 24 to 48 vols


Try another multi-meter or change the settings... 12V alternators cannot produce 48V.

Jul 02, 2009 | 1993 GMC Sierra K1500

1 Answer

Alternator putting out 16.5volts


or and more likely... the voltage regulator either mounted on the alternator or on the wheel well is defective.

Feb 26, 2009 | 2003 Chevrolet Impala

1 Answer

24 volt charging problems .2 12 volt batteries 1 battery 16volts and the other about 9-10 volts


A 12 volt battery is actually 13.2 volts fully charged. If you are reading 16 volts, you are probably getting extranious voltage from the system somewhere, especially if the vehicle is running when you check the voltage. The alternator will put out about 15-18 volts to charge the battery normally, and yours may put out 28-32 volts to charge them in series, but the batteries, when disconnected, should never read more than about 13.2 volts each. Typically, it will read about 12 1/2 volts when disconnected. COMPLETELY DISCONNECT BOTH OF THE BATTERIES. If you still read 16 volts when it is disconnected, you must have a bad meter because the battery can't produce that much voltage, no matter what. (Six 2.2 volt cells connected in series inside the case.) Put the meter on a known good battery on another car that is not running and see if you get the same reading. It sounds like the other battery is almost dead, regardless, and it sounds like your series/parallel switch may be malfunctioning. (That is the switch that puts the battery in series to run the 24 volt starter, then puts the batteries in parallel to run the remainder of the vehicle on 12 volts. This is all assuming that you have a diesel vehicle with a 24 volt starter and that is why you have two batteries.

Aug 19, 2008 | Toyota Land Cruiser Cars & Trucks

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