Question about 2003 Harley Davidson FLHTCUI Electra Glide Ultra Classic
Ok, let's check the charging system. The battery is easy. Take the battery out of the bike and take it to an automotive parts store. Ask them to load test the battery for you. If the battery is over two years old, it could need replacing.
Once you're sure the battery is good and it is FULLY CHARGED, we can test the rest of the system. You'll need a DVOM (digital volt ohm meter) to check the system. With the battery back in the bike, connect the DVOM across the battery. Red meter lead to the positive terminal of the battery, black meter lead to the negative. Put the meter's function selector switch in DC VOLTS, 20 VOLTS or greater. Start the bike and bring it to a high idle. The meter should read 14.5 - 15.0 volts.
Now, to test the stator, follow the wires from your regulator down to where it goes into the engine cases. Disconnect the connector and look into the engine side of it. You'll see two metal contacts down in there. Set you meter's function selector to AC VOLTS, 50 VOLTS or greater. Start the engine and bring it to a high idle. Touch each one of the metal contacts down in the engine side of the connector with a meter probe. It makes not difference since we're measuring AC voltage at this point. The meter should read at least 30 volts.
Now, if the alternator (stator test) does not put out at least thirty volts, the stator is bad and needs to be replaced. If the alternator does check good but not enough voltage at the battery, your regulator may be the culprit. Make sure all connections are clean and tight and that the body of the regulator is grounded good. Recheck the test at the battery. If it still fails, replace the regulator.
Now, I've seen may problems such as your's that are intermittant. In other words, the problem is here on minute and gone the next. I fought that on one bike for over a year until we finally replaced the entire charging system and fixed it. If your bike proves to be doing that, you may wish to consider that option. Fix the thing and be done with it. I wouldn't buy the rotor, just the stator and the regulator.
Posted on Aug 31, 2010
Testimonial: "right on with the test procedure. Battery didn't show it was charging. While the stator test showed 30vac, an ohm test showed it was grounded. Thanks "
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Jan 07, 2014 | 2011 Harley Davidson FLHTK Electra Glide...
Oct 27, 2013 | Buell Motorcycles
Apr 18, 2011 | Yamaha YZF Thunder ace 1000 R Motorcycles
Oct 25, 2010 | 2000 Harley Davidson FXST Softail Standard
Aug 11, 2010 | 2000 Yamaha YZF-R1
May 21, 2010 | 2000 Harley Davidson FLSTC Heritage...
May 01, 2010 | 2000 Harley Davidson FLHRCI Road King...
Dec 06, 2009 | Jeep Cherokee Cars & Trucks
Jul 25, 2009 | Honda CBR 600 F(4)Y Motorcycles
Jul 09, 2009 | 2006 Harley Davidson FLHR Road king
Jul 09, 2018 | Motorcycles
492 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: