battery light on dashboard on 1997 Plymouth Voyager

the battery light on the dashboard has lit up twice in 2 days after the engine has been running a while in 80 degree dry weather. The electronic odomoter is blinking while the light is on. When I turn off the engine and restart it the light does not light up. Is this a serious problem? What can be the cause?

by in Portland, OR on August 05, 2009
1 answer 2 comments
ANSWER by on August 05, 2009
This is most likely a sign of an internal fault in the alternator. A simple test is to put a volt meter across the battery terminals at rest (engine off) voltage of a fully charged battery should be 12.6 volts, start the engine the voltmeter reading across the battery should immediately increase to 14.6 volts approx.when the engine is started if the alternator/charging system is correct. A simpler test is if the battery light is on with the engine running (hand brake applied) hit the alternator with a light to moderate force, if the battery light goes out as the alternator is struck the fault is internal in the alternator.
COMMENT by on August 16, 2010
The battry light came on , on my dash board; so I replaced the battery and after 2 days it came on again. What could be the possible problem?
COMMENT by on January 03, 2011
I have similar problem. I am going to replace my alternator. What are the steps to get the alternator out of it's "caged-in" location? I've removed the necessary bolts, but I need to know what other components need to be disconnected in order to pull the alternator out. I have a 1999 voyager 2.4 FYI.
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i replace the battery ang alternator and my battery light on the dashboard panel still lights up?