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Grasshopper mower not charging battary alt. putting out 14 volt

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  • Cars & Trucks Master
  • 5,341 Answers

Is this a 12 volt system? Have the battery tested for a dead cell.

Posted on Nov 03, 2012

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Posted on Jan 02, 2017

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tunde007
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SOURCE: 2002 kia Rio Altenator

Hi, the actual output voltage produced by the alternator will vary depending on temperature and load, but will typically be about 1-1/2 to 2 volts higher than battery voltage. At idle, most charging systems will produce 13.8 to 15.3 volts with no lights or accessories on. This can be measured by connecting the positive (+) and negative (-) test leads of a voltmeter to the battery posts while the engine is running.

Possible cause of the alternator not charging includes Slipping or broken alternator belt, Open diode, Open circuit in stator windings, Open charging circuit, Open field circuit, Worn brushes or slip ring and Defective voltage regulator..

Posted on Feb 27, 2011

  • 14036 Answers

SOURCE: alternator not charging

ALTERNATOR DRIVE BELT SLIPPING OR BATTERY CABLES NEED REPLACING IF THEY ARE THE ORIGINAL ONES.THE VOLT GAUGE COULD BE FAULTY.TO TELL GET A DIGITAL VOLTMETER HOOK TO CAR BATTERY CRANK CAR UP.BATTERY VOLTAGE SHOULD BE 13.5 TO 14.5 VOLTS. WITH NEW CABLES. IF NOT CHECK ALTERNATOR FIELD WIRES FOR DAMAGE ALSO ALTERNATOR POSITIVE WIRE FOR DAMAGE.

Posted on May 30, 2010

  • 4044 Answers

SOURCE: 2000 sunfire charging system

Alternator is bad or the voltage regulator. Both are easily tested. Remove the Alternator and have it tested at Auto Zone or O'Rielley's.

Posted on Jun 18, 2010

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2002 mitsubishi eclipse alternator doesn't charge when cold replaced battery replaced alt had new alt tested checked grounds all good dose this paticular car have a alt relay?


No, cars do not have alternator relays. You say it doesn't charge but checks tested ok, and obviously that can't be true. Test it again. You put a voltmeter across the 2 batter terminals. With engine off, you should get 12.5 volts. While cranking, it should drop to 10 volts. When running, it should be over 14 volts. Cold or hot should make no difference at all, unless the belt slips or something? Why do you think it does not charge when cold? You have not told us everything.

Jan 10, 2016 | Mitsubishi Cars & Trucks

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I have95cadyceville pcm tells me high volts theres one wire off the back of alt true? Change alt will solve?


check voltage manually with volt meter check at the battery and check off the charge wire coming off the alternator should be 13-14 volts +/- anything over 14 volts would be to high a voltage

Apr 21, 2015 | Cars & Trucks

1 Answer

Alternator not charging


is it charging at 14.9 ? 14. any thing is at 1000rpms ( no lights or radio etc working) 13.23 to 13.86 volt is good enough to charge battery. what is the charge rate.

Jan 30, 2014 | Acura CL Cars & Trucks

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I have a 1990 dodge w150 4x4. put new alt & battery in it. still not charging wright. pull positive cable and motor dies. already went through 4 alt. could it be the black box that connects at the alt.


you need to check your electrical system with a digital volt meter-when the vehicle sits overnight, the battery should read about 12.5 volts before startup. You should get the same (or very close) reading at the large post on the rear of the alternator, then start it up. Readings should go to close to 15 volts, and gradually drop down to close to 14 volts at idle, again at the battery and the rear of the alternator. If it is much less than 14 (like 13) or more than 15 (like 16) you have a problem either with the voltage regulator or the ecm.

Mar 22, 2011 | Dodge W150 Cars & Trucks

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I have a big problim with mt 91 honda accord my battary wount charge i put new altanater new battary all cables are great but it wount seem to charge the battary if i charge the battary it well last up to...


With the engine running are you getting any voltage off the alternator? check with a multimeter. Check voltage at battery while running should be 13 volts or more.

May 16, 2010 | 1991 Honda Accord

1 Answer

My battery light stays on and the battarie will not charge. could it be a fuse or do i have to change my alternator?


You will need to test your charging system on your car and verify that it is working. The alternator should be putting out 13 to 14 volts. More than likely it is the alternator. Many places offer free battery/charging system tests because they would like to sell you a battery or alternator. Other places will do it for a minumal fee. You can also buy a handheld unit that can test the charging system and battery.

Oct 27, 2009 | 2004 Nissan Murano

2 Answers

Alternator not delievering a charge


Trace the wire from the alternator to battery for a fusable link, might be burnt. Not knowing what year your truck is, I don't know if your truck has the external voltage regulator which is usually mounted on the inner fender well, or if it's built in the alternator.If it does have the external one try replacing it. Hope this helps.

Jan 23, 2009 | 1983 Ford F 250

2 Answers

Elec problem between alternator and battery


Rest at ease the 14 volts will not hurt your system idealy your alt will charge at around 14 to 14,5 volts at the alternator and probably have a slightly lower charge rate at your battery at around 14 to 13.5 at the battery this is completely normal

Jan 22, 2009 | 1997 Dodge Caravan

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