Alternator question
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Senior User
Joined: May 2011
Posts: 296
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From: Rockland co. N.Y.
Alternator question
my battery gauge is reading between the OR in normal while driving regularly, which seems to be a little low. other trucks i have had are usually over the M. when i turn my a.c. on it will read over the N which seems way to low. is this a sign of my alternator on its way out?<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
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Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
You should not compare the reading to other trucks. Just this ones passed history.
You need to get a volt meter (DVM) and check the battery voltage while it is running. If that is OK check and make a note of where the dash gauge points to too.
You need to get a volt meter (DVM) and check the battery voltage while it is running. If that is OK check and make a note of where the dash gauge points to too.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
And in case you don't know normal voltage readings at the battery are 12.5 volts engine off and 13.5-14v engine running, if you only get 12.5v or less for both the alternator is a prime suspect.
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