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Re: Alternator is not charging the battery. wires good...
According to my information, your car has an external voltage regulator, meaning it is NOT part of the alternator. I would check to see if it has failed.
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A connection/connector, wiring, fuses, fusible links etc. can cause a no charge. Check the charging voltage at the cable coming out of the alternator. Make sure the input voltage is good ( field voltage ) into the alternator also.
a bad battery would give a wrong judgement of an alternator output. take off your battery and replace with a working one, test your alternator output using a DMM it should read about 12.5 when engine off and 14v when engine start running any figure more or less shows you have a bad alternator or an incorrect input current to the alternator....hope this fixxx it?
Usually the car has an ac alternator with a built in rectifier ,so if u have good hands replacing rectifier will cost u maybe 15$ and new alternator maybe 150$ or more
Probably because your Battery is Bad... Try Charging and LOAD TESTING our battery and then if the battery tests good, Test your Alternator and see if it is charging properly.
Maybe when you installed the New Alternator, you missed a connection or have too many wires on one connector... You have have to take some pics to see what is going on.
check belt to alternator-if good check wiring and connections to battery and alternator if good than have battery and alternator tested most auto stores offer this service for free ur battery or alternator are not working correctly either alternator not charging or battery not holding charge
MERCEDES C200 Kompressor 2001. battery alternator visit workshop is flashing on trip computer. i have replaced alternator. everything is ok. battery getting charge... i cant see any thing wrong so why workshop flashing?? maybe something wrong with new alternator 4 exampel voltage sensor??
Check the wiring of the new radio installed as follows..
Disconnect battery ground
verify radio ground wire is grounded to metal
verify radio hot wire (normally red and thick) is connected to a power source that is off when the ignition key is in the "off" position.
verify that the always hot wire is connect to a constant 12v power supply even with the ignition off.
make sure the pwr antenna wire if not used is taped at the tip and not touching any metal.
verify that all speaker wires are connect correctly and not shorted to ground.
connect battery ground you may get a small spark if your courtesy lites work.
start engine verify your battery is charging by disconnecting the battery ground cable while the engine is running, it should continue running if it don't, alternator maybe bad.
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