when first starting truck fuse blows,truck runs off battery intill battery is dead votage gage goes down battery goes dead and truck stops running. Alternator test good but putting out 28 volts were the main cable comes off the alternator and screws to the 140 amp fuse located in the fuse box under the hood next to the battery.
I tested it with volt meter were it bolt up to the fuse that was being blown.
HOW DO REPLACE THE 140AMP FUSE ON A 2004 LEXUS GX470 TRUCK?
Regulator in alternator obviously faulty, have it bench tested & fixed or replace alternator, and cure your problem.
What engine is in that?
Rather than me go through all necessary tests, which will take forever to type out & explain, try (autozone.com) and register for free, and get access to manuals for your particular vehicle. It gives you pictures etc & will make it easier & faster for you to diagnose. Good Luck.
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is voltage regulator build inside alternator or in the computer and what is the black box thst sit on top of alternator
alternator was checked at autozone test came back ok.
318 dodge magium
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