[email protected]hi there . My name is majid from iran .I need your help about my american ford explorer truble and ill apperciate your help because as you know we have problem here to get good supply in part and good mecanice?! ANY WAY .im having a ford explorer 2005 v6 the 1 I brought from uae to iran . Before some time I feel my batt charging sistem its nt working . During hight speed its OK but during stop, my gage going down.I replaiced new battery it was OK 4 two days and again problem start.I checked also when I removed batt connection during run engine my car goes off . And also in my car compiuter showig CHARGING SISTEM OK ! Please guide me what I should do ? Thanks a lot . God bless you all . YOURS majid reza

The problem is likely with the alternator, so I would check it out. Ford alternators are excellent and are very well made. It may be something as simple as replacing the voltage regulator and brush holder assembly on the back of the alternator.

Before working on the alternator, be sure to disconnect the negative battery cable.

. Clean battery terminals, battery cable connections, and connections on the back of the alternator.
. Apply dielectric grease to the connections.
. Check alternator wiring.
. Ensure battery and alternator cable connections are tight.
. Check drivebelt condition and tension.
. Run the engine and check the alternator for abnormal noise.
. Use a voltmeter to check the battery voltage with the engine off. It should be approximately 12 volts.
. Start engine and check the battery voltage again. It should now be approximately 14 to 15 volts. Check the 30-ampere alternator field circuit fuse, located inside the under hood fuse box, and the 130-ampere megafuse, located on the end of the under hood fuse box, if the voltage reading is less than the specified charging voltage. If either fuse is blown, replace them. If the fuses are good, replace the voltage regulator and brush holder assembly.

Here's how to check all under hood fuses with a test light or multimeter, not visually:

https://www.askmehelpdesk.com/cars-t...tml#post252145

You want to test for power through the fuse, not just inspect visually. If there's no power, but the fuse is good, remove and clean the contacts.

Alternator problems tend to involve worn brushes and bearings. New brush length is likely 12.7 mm (minimum brush length is likely 6.4 mm). The flow is from the alternator, to the megafuse, to the positive battery terminal.

If you think the problem may be overnight battery drain, this link may help:

https://www.askmehelpdesk.com/cars-t...tml#post241804

God bless.