My neighbor has a 2004 ford focus that after changing the alternator twice and replacing the battery, still wiil not charge. She has been a real trooper and done all the work herself, anyone who has changed an alternator on this model knows what I am talking about. I have tried to help but I have never encountered a charging problem that the alternator or battery did not fix. All connections have been checked.
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Check whether is there any charging relay in the fuse box.
SOURCE: 2000 Ford Ranger Alternator
have the alt tested there not very good do you have 12 volts going to the big wire on the alt and with key on you should have it to a small wire going to the regulator to turn it on
SOURCE: 2003 focus electrical issue- not charging properly
If you replaced the alternator and you have checked all fushes and wires. you most likly recieved bad alt. I would take it off and have it tested.
SOURCE: ford tractor alternator problem
Alternater has two leads(wires) take a jumper wire and zap the snall wire connection. just zap it, don't hold power to it... injury hazard when around running componants. have engine running when zapping. good luck and be careful
SOURCE: Battery in a 2001 Ford Escape won't hold charge.
After eight years, if the battery hasn't been replaced already, then it may be just that. Otherwise the only thing left to check is the battery cables themselves. Corrosion at the battery terminals is obvious but the alternator lead connection to the battery terminal might need to be verified electricaly. Also check the negative battery cable at the block and chassis. Basic charging system test is: Voltage at the positive terminal with ignition and all accessories off should be at least 12.6 volts. If below 12.6 even after 2 hour charge, replace the battery. With engine running at 1500 rpm, between 14.1.and 14.7 volts. With the accessories turned on one at a time, the charging voltage should drop and then come back up and not drop below 14.1 volts. If it does, the regulator is deffective. The voltage should change in response to loads and engine speed. Good luck, Techjoel
SOURCE: replaced the battery and the alternator in 2006 ford taurus
check the alternator fuse and grounding
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I had the same problem last year it ended up being the positive battery cable there is a fusale link in it that went bad i bought a new one from the dealer for $100 and that fixed it .
It could be the pig tail connector going to the alternator too
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