2003 f-150 4.6 new battery, new alternator, new alt. plug pig tail. All fuses and fusible links good, Still not charging????

Asked by May 01, 2016 at 09:09 PM about the 2003 Ford F-150 XLT Crew Cab SB

Question type: Maintenance & Repair

2003 f-150 4.6 new battery, new alternator, new alt. plug pig tail. All fuses and
fusible links good, Still not charging????

2 Answers

12,825

At idle whats your multimeter reading at the battery terminals? did you perform any voltage drop tests.

19,860

Check connections on the alternator for good contact and correctness. Use a multimeter to check the voltage at the battery with the engine running. Check the grounds. Hopefully you disconnected the battery prior to installing the new alternator. Alternators now contain electronic components. Reversing the polarity by mistake and harm the new alternator.

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