brain box? alternator?
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Joined: Jul 2006
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brain box? alternator?
i replaced battery and alternator...drove 20 miles...during the trip, i had complete decline in battery power...all dash lights lit up...gauges started spinning...truck dies on highway...brain box replacement? i know someones got the experience...help
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
Well I'd have the vehicles electrical system load checked, with all it's parts in place, in the vehicle.
Just because those parts are new, doesn't mean their good.
Could also be a loose connector to the alternator, that didn't get plugged in good enough, seing as how it was recently messed with.
Anyway, first check the obvious things, If none are found, your local autoparts store has a portable electrical system tester that can do this electrical system check up & will likely be able so sniff out the culprit.
If that doesn't turn up anything, have them scan the computer for trouble codes & see what clues it'll offer up.
Most auoparts stores will do these tests at no charge.
If the battery is run down, recharge it overnight at a low rate, say about 4- 6 amps, so you don't overheat & damage the plates & so you can drive it & then take it in for the check up.
Let us know what you find.
Just because those parts are new, doesn't mean their good.
Could also be a loose connector to the alternator, that didn't get plugged in good enough, seing as how it was recently messed with.
Anyway, first check the obvious things, If none are found, your local autoparts store has a portable electrical system tester that can do this electrical system check up & will likely be able so sniff out the culprit.
If that doesn't turn up anything, have them scan the computer for trouble codes & see what clues it'll offer up.
Most auoparts stores will do these tests at no charge.
If the battery is run down, recharge it overnight at a low rate, say about 4- 6 amps, so you don't overheat & damage the plates & so you can drive it & then take it in for the check up.
Let us know what you find.
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Postmaster
Joined: Oct 2003
Posts: 4,516
Likes: 1
From: SoCal
In addition to pawpaws excellent advice take a look in your owners manual & see if theres a fuse listing for "Generator/voltage regulator"
Not sure why Ford uses that terminology since you have an alternator. Tradition I guess.
Older Fords used a fuse link to provide excitor voltage to the voltage regulator, newer Fords use a fuse, not sure what yours has.
If theres no excitor voltage to the voltage regulator the alternator wont charge your battery.
Not sure why Ford uses that terminology since you have an alternator. Tradition I guess.
Older Fords used a fuse link to provide excitor voltage to the voltage regulator, newer Fords use a fuse, not sure what yours has.
If theres no excitor voltage to the voltage regulator the alternator wont charge your battery.
