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Battery light stays on

Batt.light on batt alt and starter check ok?

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Batteries are difficult to test properly. They must be tested under load to determine the internal resistance... once the internal resistance is too high then you must replace the battery. Using a multimeter test the voltage. Write it down. Then turn on the headlights maybe even the radio and the blower, wipers etc (leaving the engine off) then take a voltage reading again. A charged battery should be near 14 volts readings below 12 volts shows a bad battery.

Posted on Oct 18, 2013

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6ya6ya
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Posted on Jan 02, 2017

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stormbrewin
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SOURCE: charging problem 1991 volvo 240

14.6 means your voltage regulator or diode is suspect Despite having new alternator .Ive cross refrenced your smptoms in the haynes workshop manual and alternator is your only end answer.The haynes test is to start vehicle with multi meter connected across the battery terminals,increase the engine speed until the reading remains steady should be approximately 12 to 13v and no more than 14v.switch on as many accessories as possible(headlights heater blower radio etc)check that the alternator maintains the regulated voltage at around 13 to 14v.If the regulated voltage is not as stated then alternator is to be repaired/replaced.Good luck with it and a happy new year.

Posted on Dec 29, 2008

  • 416 Answers

SOURCE: my 1996 nissan altima wont

Cables from alt to battery can be deposited/burned/oxidized. In this case battery wont get charged. Also check the alternator connections. Cable might be burned or not tight enough
Also serpentine belt might be not tight enough
Good Luck

Posted on Jan 17, 2009

bunnydawg
  • 5158 Answers

SOURCE: focus 1.8zetec diagnostic code p103

if the number missing from the code is a zero it would be your maf sensor. the first thing to try is just to reset it. unhook your battery for about ten minutes... hook it back up again. incidentally this could reset the battery light being on... doesn't always work... if it doesn't let us know we will forward other solutions

Posted on Apr 07, 2009

  • 2 Answers

SOURCE: Have a 1987 honda accord and the battery light

Have alternator tested again, seems like alternator has intermitent problem.

Posted on Sep 12, 2009

  • 832 Answers

SOURCE: 1995 saturn wont start

1. Check the ignition systems (CDI, or Ignition Coil, Distributor rotor and cap, Spark Plugs and Cables)
2. Check the fuel system. (Pump, and Distributor nozzles)
We presume you know how to do this checks. Just
send your e-mail for further assistance.

Posted on Oct 17, 2009

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1 Answer

2002 malibu battery light stays on replaced alternator and belt no help


Batt probly not chargn cause main wire in back of alt is wornout. Alternator tho sounds bad..it will drain a battery quik.Disconnect batt ovenite to confirm

Sep 26, 2016 | 2002 Chevrolet Malibu

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Starting problem all dash lights come slow cranking had batt,alt and starter all ok dealer says starter


While it could be the starter, 10 years is pretty early for starter problems. Have somebody else check the battery... I had similar problems which turned out to be a defective battery.

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98 chevy malibu my alt isnt charging new alt batt test good cut out the fuselink on starter the alt wire runs thru firewall If i run a wire straight to the batt it is putting out 19v any suggestions


Did you check the fuse in the under hood fuse box ? GEN / BATT fuse 10amp . Is your check engine light on ? This is a computer controlled charging system , it should have four wires connected to the alternator . 1 - the heavier wire on the back ,this comes fro the starter - the one with fusible link , you could have checked for battery voltage with voltmeter ! The three other wires in the connector are the orange one ,this comes from the GEN / BATT fuse an should have battery voltage ! The last two come from the PCM - engine computer . The gray wire is the turn on signal from the PCM an the Red wire is the control from PCM ! Charging System Wiring Diagram MOTOR Magazine Article MOTOR Information Systems

Aug 14, 2015 | Cars & Trucks

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Battery light is on


check battery cables, conections to starter and batt.

Jan 09, 2013 | 2003 Chevrolet Tahoe

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DO NOT TURN ON ANITHING


Check the battery clamps are tight and good contact, Maybe the battery needs charging, check the fuses.

Jan 15, 2010 | 1998 Ford Escort

1 Answer

Why would battery light stay on light stay on after changing alt


Follow the batt + wire to a large fuse. there are two one for the starter one for the alternator they blow the fuse when the alternatror goes and this will cause the alternator not to charge.

Dec 15, 2009 | 1997 Ford Expedition

1 Answer

Battery light stays on.


If you disconnect the battery for 20 min it should kill all memory and reset everything.If not you charge is still low charge up your batt. with a charger.and test your alt. output 13.9-13.7 you have to check the book.I'm not to sure on that.You might have a voltage regulator problem bad batt. Or somthing is hooked up wrong. Mabey the old alt was fine. Have the batt. tested. All alt. well most are rebuilts so you might have a bad one it happens.Make sure that it's putting out a charge.
Loose alternator drive belt or loose or corroded battery cables. The battery itself may also be bad.

Sep 22, 2009 | 1998 Chevrolet C2500

1 Answer

When I turn the ignition on the battery light comes on and the voltage gauge drops between 9 & 14. Then it slowly goes up to around 14. I replaced the battery. Alternator??


take volt meter check voltage on batt.while truck is idling,voltage should be between 13.5-14.5v,turn headlights on it should stay in that range if it goes below,check for bad wire connection at alt.,if conn. are ok,theres a good chance alt. not charging properly!before doing test make sure batt.is full charge!

Apr 19, 2009 | 2001 Chevrolet Silverado 1500

1 Answer

Dead Batt (poss. Alternator?)


Likely you did this already but check fuses in power distribution box near battery (likely two 60a fuses for alt in there). Additionally, was alternator regulator tested or was alt "full fielded" for test. (regulator failure will prevent power made at alt from reaching the battery). Also, check continuity of leads going to alternator to make sure they're OK.

Mar 09, 2009 | 1994 Jeep Cherokee Country

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