I have an excellent independent Honda mechanic. My Alternator light is on. He has checked the alternator belts, brushes, etc and the alternator is not charging the battery. He has replaced the alternator with a new factory replacement alternator and it is not charging the battery either. He showed me the wiring diagram for the model and it shows a single wire from the alternator (the voltage regulator, etc) self contained in the alternator. I believe the wire went to the alternator light indicating when it is charging. The diagram does not show, nor can he find any description as to whether the voltage should be +12v or ground. Do you know?
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Could be the alternator bearings, there are two of them, one inside in the front, one inside in the back. You can sometimes tell by using a mechanic's stethoscope, which is a long screwdriver or an long thin stick. Place one end on the alternator (when the motor is running) and the other end in your good ear. A bad bearing will scream at you. The other think more likely is a worn out belt. They make an awful noise sometime when the rubber gets hard. The can chatter, squawk, and other sounds mimicking the alternator. Also, be sure to check the belt for cracks on the inside surface. Changing the belt is cheaper that replacing the alternator, if you'd care to try the least expensive fix first, and you still aren't sure.
COULD BE LOOSE ALTERNATOR BELT.TRY ADJUSTING ALTENATOR BELT SEE IF HELPS PROBLEM.IF ALTERNATOR NOT CHARGING BATTERY THE ECM CANT WORK NONE OF ENGINE CONTROL SYSTEMS.IF ALTERNATOR DRIVE BELT TENSION CORRECT REMOVE ALTERNATOR TAKE TO ANY AUTO PARTS STORES THEY WILL CHECK IT OUT SEE ITS WORKING OR YOU CAN TAKE DIGITAL OR ANALOG VOLT METER TO CHECK ALTERNATOR OUT PUT AT BATTERY WITH ENGINE RUNNING SHOULD HAVE 13.5 - 14.5 VOLTS IF ALTERNATOR IE CHARGING THE BATTERY.
Disconnect battery. Remove under engine shroud if it's still there. The alternator is at the front of the engine down low on the radiator side. Loosen drive belt, the alternator can be removed by patient use of a 14mm wrench, the wires should be removed before dropping the alternator out. Frankly I forget whether they are in a jack or screwed on. It is necessary to turn the alternator sideways to get it out. Have fun!
hi mate,your problem is fairly easy to fix-----remove the plastic under tray on the drivers side,from underneath, undo the main alternator bolt,just enough to move the alternator, now from the top undo the belt tension adjustment locking bolt,then back off the tension adjuster itself until the alternator belt is loose and can slip off the pulleys-----fitting your new belt is the reverse to this. all the best.