Can the altanator be rebuilt right on the car battery light came but charge in battery

The battery indicator is not turned on by the battery it is a warning that the charging system is at fault, you have a failing diode in the alternator or a defective voltage regulator or a defective alternator connector. Knowing the history of this car's charging system from 25 years as a Ford dealer technician I would replace the Alternator with a Ford OEM remanufactured and the wiring harness connector to it as both are troublesome parts. DO NOT USE CHEAP AFTER MARKET REBUILT ALTENRATORS- solder and shrink tube all connectors.

If the battery goes dead while driving, that means that the "charging system" isn't doing the job. The alternator may be fine, but there's something not connecting correctly. Have a competent mechanic check the full charging system.

sounds like you might have lost the altanator. Check the battary to see if it is very low, if so it was running of the battery and not the altanator. try charging the battery and see if it will run. If it does, checkthe voltage on the battery. it should be above 13 volts when runnig.If not it is the altanator.

it is your voltage regulator in your altanator replace it with a rebuilt one

there is a cable mounted on the altanator farsten by a 12mm nut if that is broken or not hooked up
unit will not charge. use a tester to check for continuety or chech conection on battery harness

you will most likely need to get your altanator tested

two things would cause this a totally dead battery. or a loss of the ground. headlights are grounded to the body and run directly off of the battery. since your lights dont work this would point to a dead battery.to find out if the battery is bad or if it was caused by the charging system not working. try jumping the car if you can get it started here are a couple of simple ways to check the charging. one with the car running remove the possitive cable from the battery if the car dies the altanator is not charging replace it. if the car stays running the battery most likely has dead cells and wont hold the charge. the other way is to take a bolt or small ferous metal object and on the back of the altanator there is a round cap in the center of the case if the piece of metal your using will stick to that cap then the altanator is producing a charge and the battery is the problem. if no magnetic field is present then the alternator is bad and needs replaced

YOU DIDN'T SAY HOW OLD RODEO IS. IF YOU HAVE AN OLDER MODEL START BY TESTING THE BATTERY AND ALTANATOR. IF THE BATTERY IS BAD YOU WOULDN'T GET A DEFINATE READING FROM ALTANATOR.

A fresh charged battery does not mean it is a good battery.The battery is working the alternator to death,replace it,it has a bad cell,or the amps are to low,and has a short in it.The alternator senses the battery is in bad need off charge,and puts all out until the alternator has nothing left,This is the most likely cause of this problem.Also be sure the battery cable ends are shiny clean when replacing the battery.

This is caused by a loose belt or it can be caused by brushs wearing out and the altanator is detecting a fault with low votage. if the battery is ok try clean the battery cables first then if the light still comes on I would think of replacing the altanator or at leats the brushes and the split ring commutator.