Question about 2000 Harley Davidson FLTR-FLTRI Road Glide

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2000 HD Road Glide Alternator replacement

My 2000 Road Glide battery is draining and the voltmeter shows no charging - sitting at 11- 11.5 volts while operating. I am thinking I need to replace the alternator but have no idea how easy this job is. Any input?

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Before you spend for the new alternator, look for loose or dirty connectors. That's common on large twins.
You gave us no idea of automotive/Bike/Repair skills, so I don't know how easy/Hard it will be for you.

Posted on May 03, 2010

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Posted on Jan 02, 2017

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1 Answer

Alternator problem


Easy way to check with a voltmeter. Check battery voltage on the battery terminals with key off, engine off, and then check voltage with engine running.
Engine off, a good battery should have voltage between 12.6 volts and 12.9 volts. With engine running, battery voltage should be a minimum of 13.5 volts, somewhere between 13.5 and 14.5 volts. This would indicate the alternator is good and is charging the battery. If voltage is less than 13.5 volts, if it only shows same volts as when not running, the alternator is not working right. Take it off and have tested for free at a parts store. It could be a bad alternator or it could be that the wiring between alternator and battery has a problem. If alternator tests good, start looking into the connections between alternator and battery.
Does your battery or alternator light stay on when engine is running? This would indicate a charging system problem. Time for the voltmeter test.

Apr 10, 2014 | 2000 Toyota Avalon

1 Answer

71 c10 not staying charged... new battery alternator fuses good and new voltage regulator


Maybe it wasn't running long enough to charge up the battery?
Stop trying to jump it, when you are having problems with it dying, take the battery off and have it charged. And/or buy a $20 voltmeter to see what the battery shows. If it says less than 12 volts, it is discharged, and needs charging. A good battery that is not run down should have at least 12.5 volts. A new battery that is charged should have very close to 13 volts, maybe 12.8 volts.
When you have the truck running, check the alternator for charging. You put the voltmeter right on the battery and check it again. This time, with truck running, battery should show at least 13.5 volts. That shows the alternator is working. A good alternator will put out about 13 or 14 volts-the regulator will keep it from going any higher to prevent problems, like a melting battery or electrical parts burning out.
I would say get the charging system working right, then address the problem of dying at stop lights. That could be a carburetor problem, if the alternator is working.

Aug 15, 2013 | Chevrolet Cars & Trucks

1 Answer

Problem with lights on my tracker it drain's my battery i have a good altnator on it


If the lights drain the battery when the engine is running, then you have a bigger problem of the alternator not charging, not working. When the engine is running, the alternator supplies all the current to run the car's electrical systems, while also charging up the battery for the next start-up. If you know the alternator is good, then maybe a fuse or fusible link has blown, preventing the alternator from working. To check, put a voltmeter on the battery with engine running-it should show over 13.5 volts if the charging system is working. If the alternator is not putting out, the voltmeter will read same voltage on the battery as when the engine is not running. A fully charged battery should show "around" 12.6 volts. A discharged battery will show less than 12 volts. That should give you an idea of the range to look for on a voltmeter. I believe some parts stores will check the voltage for free. I know most stores will test the alternator and battery for free if brought into the store, but you need the voltage read while on the car and engine running. If the system is charging normally and the lights kill everything, you may have a short in the lighting system.

May 05, 2013 | 1994 Geo Tracker

1 Answer

Replace voltage regulator 2000 suburban 1500


You don't say what year your truck is but since the 70's the alternator and voltage regulator are housed together. Use a voltmeter to check the output from the alternator to a good battery when running it should be putting out 13-14 volts if not there is your problem.

Jan 17, 2013 | Chevrolet Suburban 1500 Cars & Trucks

1 Answer

Suggestions for finding a short circuit


Hi, John first perform the following tests:
1. Fill acid type batteries to proper levels.
2. Charge battery overnight at 1-2 amps you need 12.5 volts or better after charging.
3. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
4. Hook up battery positive cable, then with your multimeter on the milliamp scale connect one lead to the negative battery post and the other lead to the ground cable. Meter should read 3 milliamps or less, 10 milliamps with a radio, 15 milliamps with radio and CB. If your meter reads higher you need to isolate the circuit by pulling fuses and circuit breakers one at a time and observe meter for a drop in amperage then get out your test light and track down the short in that circuit.
5. Hook up a voltmeter to the battery and start the engine, if meter falls below 9.0 volts while cranking you need to perform a proper load test on the battery and replace if necessary.
6. With the engine running at 3600 RPM, the battery should read 14.3-14.7 volts if not continue tests.
7. Unplug the voltage regulator from the alternator at crankcase by the front of the primary cover.
8. To test voltage regulator go to https://www.youtube.com/watch?v=F8EjV0IjW9Q
9. With ohm meter, one lead grounded, touch alternator pin meter should read infinity, if not replace the stator.
10. With ohm meter, both leads touching alternator pins meter should read 0.1 to 0.2 ohms on 1989 and later models. 0.2 to 0.4 ohms 1988 and earlier models, if not replace the stator.
11. With the voltmeter set on AC scale, both leads touching alternator pins meter should read 16 to 20 volts AC for every 1000 RPM'S 1989 and later and 19 to 26 volts AC for every 1000 RPMS. If not replace the rotor.
For more information about your issue and valuable "FREE" downloads that you will need please visit the websites below. Good luck and have a nice day.
Is it normal for the Venture to drain the battery so fast
Re Parasitic Battery Drain Road Star Forum Yamaha Road Star
http://www.yamahaventure.nl/pdf/servicemanualxvz13tf.pdf
OEM parts for Yamaha
http://www.yamahaventure.nl/pdf/ownersmanualxvz13tf.pdf

Jun 25, 2012 | 2003 Yamaha Royal Star Venture

1 Answer

What should the average volts be for a 2001 HD UltraClassic?


13.8-14.2vdc should be about normal when riding and the charging system is working properly. Have you checked the voltage regulator?

May 08, 2012 | 2001 Harley Davidson FLHTCUI Electra Glide...

1 Answer

2000 pathfinder battery draining


Sounds like your alternator is doing nothing-the car is running only off the battery. Have your charging system checked-does your battery light stay lit? If that bulb is burnt out, that may be why the charging system is not working. On some charging systems, that bulb is crucial for the alternator to work.
Engine off, a fully charged battery should measure 12.5 volts with a voltmeter. Engine idling, and the voltmeter at the same battery should be showing about 13.5 volts. This tells you the charging system is working.

May 13, 2017 | 2000 Nissan Pathfinder

1 Answer

How many amps on amp meter 1995 jeep cherokee


I think you are looking at the voltmeter, not the ammeter.

11 volts means the alternator is not charging if the engine is running. There are some conditions that exist in normal operation where the voltmeter can register 11 volts and it not be an issue, but if you are driving down the road, and only have 11 volts- the vehicle is running off the battery to keep the engine functioning for only a few miles more.

An ammeter in a car or truck has to be able to handle the full output of the alternator- which can range from 35 amps for some, up to 165 amps for others and higher. It is this reason ammeters in motor vehicles rarely have any numbers on them, just plus or minus sign, or the words charge discharge.

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1 Answer

Charging system not working


Are you sure it is 11 amp or is it 11 volt....in which case the battery has a bad cell.
Tom

Nov 29, 2011 | 2000 Chevrolet Astro

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

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