Question about 2005 Harley Davidson FLHTC - FLHTCI Electra Glide classic

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2005 Ultra Clasic volt at idle is 10.5 @ 2500 it reads 12.

If I run It up to 3000 rpm the volts go to13.5. I changed the batt. today. I just got it out of the shop for cylinder replacement. I put a new stater and regulator in Last year.

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  • Dr. Mark CycleSurgeon
    Dr. Mark CycleSurgeon May 11, 2010

    Are you using your bikes voltmeter to read your output? Is your results the same when using an external voltmeter?

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Use a voltmeter hand held NOT that goofy guage on your dash see if their is a difference. HD can slap a meter on it in a jiffy. Idle should be around 13 AND 2000 RPM 14....I have put regulators in that were bad out of the box...Stater have not had a bad one from the box yet. knock on wood.

Posted on Jul 25, 2009

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How to check alternator output


with engine running you should be able to check alternator output on the battery. put your leads on the positive and negative post and see if it reads more then 12 volts DC. usually charges at 13-13.5 volts

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How to check my voltage regulator in 1989 Honda Civic


put a multimeter across the battery terminals and start the car
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if it goes higher then it is suspect
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2002 Harley ultra high voltage


Hi Anonymous, perform the following tests:
1. Fill acid type batteries to proper levels.
2. Charge battery overnight at 1-2 amps you need 12 volts or better after charging.
3. Make sure all connections are clean and tight especially the negative cable at both ends.
4. Hook up volt meter to battery and start engine, if meter falls below 9.5 v replace battery.
5. With engine running at 3600 RPM battery should read 14.3-14.7 volts if not continue tests.
6. Unplug voltage regulator from alternator at crankcase by front of primary cover.
7. To test voltage regulator go to: https://www.youtube.com/watch?v=F8EjV0IjW9Q
8. With ohm meter, one lead grounded, touch alternator pin meter should read infinity, if not replace stator.
9. 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 stator.
10. With volt meter 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 rotor. Good luck

Sep 23, 2013 | 2000 Harley Davidson FLHTCUI Electra Glide...

1 Answer

2000 hd flhtcu doesnt charge battery when running


Hi Anonymous, perform the following tests:
1. Fill acid type batteries to proper levels.
2. Charge battery overnight at 1-2 amps you need 12 volts or better after charging.
3. Make sure all connections are clean and tight especially the negative cable at both ends.
4. Hook up volt meter to battery and start engine, if meter falls below 9.5 v replace battery.
5. With engine running at 3600 RPM battery should read 14.3-14.7 volts if not continue tests.
6. Unplug voltage regulator from alternator at crankcase by front of primary cover.
7. To test voltage regulator go to: https://www.youtube.com/watch?v=F8EjV0IjW9Q
8. With ohm meter, one lead grounded, touch alternator pin meter should read infinity, if not replace stator.
9. 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 stator.
10. With volt meter 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 rotor. Good luck

Apr 10, 2013 | 2007 Harley Davidson FLHTCU Ultra Classic...

1 Answer

Triumph daytona 650 05 model having problems charging the old and new battery told it could be the rectifier /regulator how can I check


I have a good idea, this is if you change the batt and it did not charge try with a volt meter re on the + being red lead B- being minus set to dc volt set to 20 volt check charging system this being 14+ volt is the reading to getand also rev engine to moderet rpmto see if it drop slow or fastif it drops to 12 and below may be reg, now find the three like wire to the reg test for A/C volt 65 and higher at 5000 RPM that will also indecate reg that is if there are no burnt wire which will be see when you go to check the voltage readings. Have fun

Sep 30, 2011 | 2005 Triumph Daytona 650

1 Answer

I have a 2001 flhtcui what are the ac reading coming from stator at 2.5k rpm 3k rpm and 3600 rpm. At 2000 rpm I get about 12 volts dash guage reading but at 3000 I get 13.5 to 14 at lower rpm 2000 or so I...


The AC output of the stator should be 32-40 volts at 2000 RPM (16-20 per 1000 RPM). With the battery fully charged, your regulator should supply between 13.5 and 15.0 DC volts to the battery. This should be the reading you get on your voltmeter. It will vary depending on what lights and other equipment you have turned on. Sounds like everything is working fine to me. The gauge is reading the DC voltage at the battery while the engine is running. At 2000 RPM, 12 volts is a little low but, considering the accuracy of the gauge, as long as it doesn't fall below 12 volts, it's about right. You don't ride for extended periods at engine RPMs that low. Then at 3000 RPM, 14 volts is about right. If your bike never ran anymore than 12 volts, your battery would slowly go down. If it goes any higher than 15.0 volts, it will boil the battery. Usually, about 14.3 or so with no load on the system is about right.

Good Luck
Steve

May 17, 2011 | 2001 Harley Davidson FLHTCUI Electra Glide...

1 Answer

2000 ultra wont charge, iread how to troubleshoot found problem to be stator is it a complicated repair and where is it located thanks


AHHHH the old charging system problems, lol.

Your stator is located on the left side of the engine (as your sitting on it), behind your primary(behind your compensating sprocket, and rotor). Yes, this is a little complicated to diagnose but I will try my best to help you out.

1. Start your bike, and put your multimeter on your battery(black to neg. and red to pos.).
2. at idle you may read 11.5-13.5 Volts, this is normal. now when you rev the engine to 3000 RPM your Voltage should jump to no more than 14.7 or very close to it. If it stays low It could be either your stator or regulator. If its way higher, you need a new regulator. But first, lets test the stator. Turn the engine off.

Locate the stator wires directly in front of your oil filter, see it going into the inner primary?? Ok follow those wires to the regulator, in fron of the frame kind of by the oil filter and front motor mount, but connected to the frame. OK, go it?? Unplug the stator from the regulator. Now your gonna be testing the stator so dont even worry about the regulator. Now that you have the wires from the staor in your hands ( your hands should be filthy by now, lol)

1. Set your multimeter to Volts AC. Youll be going to about less than 100 VAC so set it max off 100 or 200.
2. Remember that this is a 3 phase system so you should 3 pins, so youll have 3 readings, Pin 1-2, pin 1-3, and pin 2-3.

3. Touch your mutlimeter probes to pins 1 and to pin 2, with the engine on and at idle, you should be about 20-30 VAC around there.
4. As you rev the engine, you should jump about 20 VAC per 1000 RPM. This means that at 3000 RPM you should be reading about 60-70 VAC. Do this test with the other pins. Pin 1-2, pins 1-3, pins 2-3. You should have about the same readings on all of them, and, your readings should be steady, and not drop off or gain alot.
5. Remember about 20 VAC per 1000 RPM. But, dont go over 3000 Rpm.

Results:
1. If the AC voltage at the stator is steady at 3000 RPM at about 60 VAC., but, battery voltage stays at 13V at 3000 RPM with stator and regulator hooked up, You got a bad regulator.
2. If your not getting a good AC voltage from the stator, your stator is bad.
3. If the AC voltage from your stator changes drastically as you go up in RPM (meaning as you slowly go up in RPM the AC Voltage goes from 10 Volts to 60 Volts back down to 20 volts.) You have a bad rotor.

Thats pretty much the basics, lol. Also open your clutch cover and smell your primary, if its an overwhelming disgusting burnt smell, and your clutch is working. 99.9% you have a burned stator and needs replaced.

May 03, 2011 | 2000 Harley Davidson FLHTCUI Electra Glide...

1 Answer

I just purchased yesterday and found recall notice in upper tour pack. The battery was low charged over night and am going to check voltage and amps at battery while running today. What are the telltail...


With the battery fully charged, use a DVOM (digital volt ohm meter) to check the output of the charging system. Connect it across the battery, red meter lead to positive, black meter lead to negative. Put the meter's function switch in DC VOLTS, 20 VOLT range. Start the engine and bring it to a high idle of about 1500-2000 RPM. The meter should read 14.5 to 15.0 volts.

If the meter does not read correctly, unplug the regulator where it enters the front of the engine case. You'll be measuring the AC voltage at the engine case side of the plug. Put your meter's function switch in AC VOLTS, 50 VOLT range. Put one meter lead into one metal contact in the plug and the other lead into the other metal contact in the plug. Makes no difference which lead goes to which metal contact. Start the engine and bring it to a high idle. You should read 30 volts or better.

If you do not read 30 volts at the engine, your stator is bad. If you have 30 volts or more at the engine but low voltage at the battery, your regulator is probably bad. This is a simple test and it's accuracy is about 90% or so.

Good Luck
Steve

Oct 31, 2010 | 2000 Harley Davidson FLHTCUI Electra Glide...

1 Answer

Jet 3 Ultra, batteries 1 yr old, charge voltage only 26.3 volts output from onboard charger when batts drained after extended use. After charging overnight, batts are 12 volts each, but chair goes 1.5...


Mark Batteries your charger is putting our enuf 13.15 volts for each battery so after charging all night you should be reading about 13 volts on each. If your batts are only 12 volts after all night charge then batteries are weak Hope this helps

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