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1998 Ford Explorer, 4.0 engine, new batterry and new alternator, alternator does not recognize battery. alternator gauge shows no charge going to batrery from alternator. Any suggestions??
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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.
I'm not sure if you have all of the info you need to go forward with this. The battery may be rated for 800 amps but could have less than 12 volts if the alternator is not charging it. It could have a dead cell which would keep it from holding a charge. You would need to check the charge of the battery with a volt meter, then see if the alternator is charging at 14 volts when the engine is running. The battery should be at least 12 volts with the engine off. The problem could be in the wiring from the key switch or dash gauges back to the alternator.
Most charging circuits are in two sections, the section that charges the battery and the section that "turns on" the alternator when the engine starts. Your alternator has a built in regulator which is powered by a 15 amp fuse and a 7.5 amp fuse that also handles the gauge on the dash. These circuits would need to be checked with a meter.
you might want to get a scan to see why the engine light is on. it would be unusual to burn the fusible links, but that's about all that could stop the alternator from charging. The links are along the wires from the battery to the alternator.
yes, your problem remains in the alternator, also known as the generator wich alternates current to charge your batterry while accessories are on, eg, lights cd player and so forth, maybe a diode is losing the capability to handle the load, i recommend replacing the alternator or alternatively re-condition it. but that is most definately your problem.
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