Question about 1993 Jeep Grand Cherokee

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Having a problem with charging system new battery new alternator stll only reads like 11 volts what else can it be?

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Have you checked the output directly at the altenator with vehicle on slight revs,if you have and still only getting 11 volts can only be a faulty altenator. best of luck

Posted on Jul 17, 2009

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  • Jeep Master
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Check alternator fuse and fuse link.also make sure alternator electrical wires and connector. are in good shape.

Posted on Jul 17, 2009

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1 Answer

Charging system failed. Why is new alternator output ranging between 11 1/2 and 12 1/2 volts?


11 1/2 to 12 1/2 is not charging . That's less then battery state of charge , Battery stat of charge should be 12.6 volts , when charging with a volt meter you should see 13.1 to 14.1 volt at the battery posts . Is there a battery symbol lit on your instrument cluster ? Is there battery B+ voltage at the wires hooked to the alternator How to Test an Alternator

Feb 18, 2016 | 2001 Kia Spectra

1 Answer

I have a 2002 GMC Envoy, Quite frequently my charging light will come on and state that I only have 10 volts coming out and then all the sudden jump to 14 and work perfectly fine


How many mile are on you vehicle ? Have you ever had Alternator replaced before ? You alternator maybe starting to fail , brushes or the voltage regulator .
Charging System Indicators
BATTERY The IPC illuminates the battery indicator when the following occurs:
?€¢
The PCM detects that the generator output is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the PCM requesting illumination.


?€¢
The IPC determines that the system voltage is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the body control module (BCM) indicating the system voltage.


?€¢
The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.


?€¢
The ignition is on, with the engine off.
BATTERY NOT CHARGING The IPC illuminates the battery not charging indicator in the driver information center when the following occurs:
?€¢
The PCM detects that the generator output is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the PCM requesting illumination.


?€¢
The IPC determines that the system voltage is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the body control module (BCM) indicating the system voltage


It would be a good idea to have it checked out , most auto parts stores will do this for free !

Dec 29, 2015 | GMC Cars & Trucks

2 Answers

My car needing a jump threw out the day


Ok I would have the battery tested. While testing battery make sure all connections are clean and tight on the battery terminals. If battery checks out to be good. Test the charging system, alternator. If alternator tests good make sure you belts are not slipping or worn and stretched out as this could cause a an inconsistent charge. While doing the battery test if posible do a draw test to see if anything is during current all the time as this could be draining or weakening the battery.

Apr 13, 2015 | 2000 Chevrolet Blazer

2 Answers

Hi again just got a new battery, battery light is still on car is starting, but now whats the problem


The BATTERY light indicates that your battery is not getting charged. There could be several reasons for this most probably your alternator, which generates the current to charge the battery when the engine is running. If the new battery is not getting charged, it will eventually drain not start your car. To confirm that the battery is not getting charged and that is the reason for the BATTERY light, put a volt meter across the battery while the engine is running. It should read around 13 volts indicating that current is flowing into the battery. If it reads 11 volts or less, that means the batter is being drained and not charged. Then have your alternator checked.G

Mar 30, 2015 | Cars & Trucks

1 Answer

Battery discharges in about 3 days if not run.


it may have deffective diode on the charging system(the alternator). 14 volts is an over charge in a battery. ampere reading must be on what the battery designed.

Mar 01, 2012 | 1997 Jeep Grand Cherokee

2 Answers

I think I have an alternator problem? The charge needle on the dash guage is spiking to 16 volts off and on. I put a voltmeter to the battery and it is only charged to about 11 volts. With the engine...


Hello
The normal charge of alternator on idling is about 13 to 14 volts. 12 is acceptable but keep in mind it will need attention soon. The needle fluctuates due to the revs of the alternator - there is nothing to worry about. Just look that the charge is always above 12V on idle.

Jul 14, 2011 | 1996 Dodge Intrepid

3 Answers

Charging system light


Have the alternator checked,it should read at the battery 13.65 volts to 14.25 volts,with the ac on high blower,and the headlights on.If it does not read this range,replace it,have the battery checked,make sure it is good,have it load checked.Also tighten the alternator belt,or replace the tensioner if needed,and the belt.

Apr 09, 2010 | 2001 Audi A4

3 Answers

How to check truck altornator


start engine unhook positive cable if it dies its bad alternator or fuesable link between batt and alternator also a volt meter will tell u if its charging a good alternator will charge 13.50 to 14 volts

Mar 18, 2010 | 1988 Chevrolet C1500

1 Answer

Battery light still on after new battery and alternator fitted


Use a volt meter and make sure the battery has 11 volts or better. If not the battery does need replacing. Anything under 11 volts tells you the battery is no good to use any longer and will not hold a charge

Feb 13, 2010 | 1998 Ford Escort

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