Check Charging Message - Bad Alternator/Diode?

2011SVT · Jul 14, 2011

Getting this message again

Got it once last year and attributed it to starting with a low battery. Charged it up and all was good.

This year I have an AeroForce gauge and it shows between 10-11 volts and that does not vary significantly with RPM which seems off to me (previous Mustang GT showed 14.7-14.9 like clockwork).

Anyone else see this issue? Suggestion for diagnosis?

Thanks!

kurtdog · Jul 15, 2011

You got a bad alternator. Caveman simple way to verify, disconnect the positive battery cable while it's running. If it dies, bad alternator. Your gauge showing 10 to 11 volts pretty much tells the story.

big_ole_truck · Jul 15, 2011

Your alternator is dying a slow death, so far. Bring it back to the dealer for a new one installed.

Gremaldi · Aug 17, 2011

The alternator is not functioning well anymore mate. Probably need a replacement or maybe few alternator parts I guess? Good luck mate.:smokin:

2011SVT · Aug 18, 2011

Thanks guys!

Actually turned out to be a bad battery. Alternator is fine.

Check Charging Message - Bad Alternator/Diode?

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