Question about 1998 Jaguar XJ8L

3 Answers

Jag xj8 3.2 v8 charge light staying on

Put new alternater in
charging at 13.9v
warning light staying on
no signel from wirning on alt

Posted by on

3 Answers

Thanks dean
i found that the new alternater was faulty from jag
put in new reg and fixed the problem

Posted on Sep 12, 2008

Thanks dean
i found that the new alternater was faulty from jag
put in new reg and fixed the problem

Posted on Sep 12, 2008

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Try putting your vehicle on a diagnostic check although you have changed the alternator the ECU ( car computer ) may still think that the alternator is still faulty a diagnostic check will cure your problem by clearing the fault codes on your ECU

dean

Posted on Sep 11, 2008

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1 Answer

Battery ok alt new battery light stays on


The light means the alternator is not charging the battery. Once the charging circuit is completed, the warning light looses its ground connection.
You may need to double check the circuit going from the alternator to the battery, or the warning light circuit going to the alternator as it could be shorted to ground.

Sep 22, 2015 | 1995 Honda Civic del sol

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Batterie will not stay charged///the light comes on showing the battery


Not good to pull cable off batteries to test alternators an yes could be alternator or u may not have power to the alt.meaning the wire on top of alt or may havy bad plug wire boyh easy to check

May 15, 2014 | 1998 Oldsmobile Silhouette

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Put in new alternator,shows charging and battery holding charge but battery light stays on. You start car and light stays off for about 15 to 30 sec. than on.


The alt should charge at around fourteen volls , any ways, yogi need to put another battery. A weak alt will kill a good bat.and vise versa

Aug 30, 2011 | 2003 Ford Taurus

1 Answer

Battery is only chargeing intermittently I think. Both lights and battery warning dashboard warnings come on, and stay on when I start the car. I believe the lights icon is only to alert you to a failed...


You need to measure the charging voltage and current using a multimeter while Rev'ing the engine. If there is no clean flow to the battery then you need to start from the alternator, the output ac and the charging regulator section which rectifies and controls the charging. The alternator can be taken out and checked individually , if there is a steady AC flow. Check the battery ground and also the charging regulator which is usually an extra unit- trace the lines of the alternator to this unit.
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http://www.fixya.com/cars/r5824824-draining_car_battery_charge

Feb 21, 2011 | 1991 Toyota Camry

1 Answer

Not charging smells of burning lights on dash stay on car wont tick over when connected


Have charging rate checked at the battery. Should be between 13.6 to 14.2. Above 14.2 is not good and will overheat your lights and cause burnout. Under 13.6, will cause alternater failure by overheating the alt.

Nov 09, 2009 | 1992 Isuzu Trooper

1 Answer

Not charging


First tell me why you don't think it's charging.
Because of the voltage reading you are getting at the battery terminals? The range you want is between 13.6v to 14.2v. The higher the voltage the lower the amps. and true the other way, the lower the voltage the higher the amps. If you get a reading of 13.6v or lower, the alt is nearing or at max output. An alt can only run at maximum for around fifteen minutes and it will start slinging solder from overheating. It's a good indication the battery is either totally dead or junk. Charging above 14.2 the alternater is running wide open and is only putting out high volts which will cause the battery to boil , in turn destroying it. This is a bad alternater. All alternaters have integrated voltage regulater with the exception of ver few of the earlier ones. You cannot test an alternater by removing a battery cable to see if the engine keeps running without taking great risk of damaging the alt, regulator. So tell me why you feel it isn't charging. Remember an alt is not made to charge dead batteries. Their sole function is to maintain the battery charge. Without a battery, the alt won't last 10 seconds.
Hope to hear from you and good luck.

Sep 23, 2009 | 1986 Chrysler LeBaron

4 Answers

BATTERY LIGHT STAYS ON. NEW BATTERY. ALTERNATOR CHARGING OK


Mazda Mpv 2000 I also have the same problem, the alternater is testing good- 14.12Amp, so what is the problem the battery light will not go off.

Jul 15, 2008 | Mazda Tribute Cars & Trucks

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