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[sonik]

Hi! Have an   2.5 td ,98  with 324000klms , I change two alternators but not charge , not more than 11,80volts accesories belt new als0 .When connect the a/c sistem battery goes down and megatron start off.please can you help me?

[robson]

Cant bear to see no replies. Were the 2 alternators you tried new .Certainly when my alternator failed it showed about 11 volts. New alternator fitted and all ok

[Stargazer57N]

make sure the wiring to the alternator is good and you have battery voltage at the main wire and the feed wire. ensure you have a good earth connection to the alternator too.
 

[Kevin Wood]

Classic thing to check is that the battery warning light on the dash hasn't blown, as this provides a little current to excite the alternator at start-up. Without this current the alternator won't start charging.