battery light shining

[goodyfleecee]

Good day and greetings from the Green Mountain State of Vermont. I have a 1997 Powerstroke 7.3 in an F250. 275,000 and it runs really well. The battery light comes on at times and seems to not a rhyme or reason. It'll come on at start up and not go off when revving up to 2000 R's. Then it'll go off as it idles back down. Sometimes it will come on as I am cruising at 55 mph and then go off again seemingly for no real reason. Where do I start and how do I check this issue out.
thanks,
Goody

[Brian]

welcome to the forum!
you may have a bad alt, hich also helps kill your batterys.
see if you can get your alt tested.

[bigcountrysg]

Welcome to the Org.

Check your and clean your battery cables, check and clean the connections on the alternator, have the alternator tested, as well as the batteries. You may have a battery that is bad. Being your have 2 batteries this is not really a problem. But once it gets cold it will be a big problem. Or you have a something draining the batteries. Also it could be a faulty voltage sensor or regulator.

To clean the battery cables get some baking soda, wire brush, safety glass, and rubber gloves. Remove the battery cables from the batteries, take the wire brush to the terminals on the battery and the cables. Then pour some water on the battery terminals and sprinkle baking soda on them. The baking soda will neutralize the acid. Do this to all the battery terminals and cables. Then put some electric grease on the terminals to prevent the corrission. To clean the connections on the alternator just use the wire brush. Then while using a voltmeter check the voltage coming from the alternator, while the engine is running it should be 14 volts. Then check the voltage while cranking should be 13 volts with no load, and should drop no lower then 11volts while cranking.

[SMKSTAX]

to the ORG!!

[pipelayerjdh]

Welcome to the ORG.!

BC has you pretty well covered. Let us know how you make out.

[goodyfleecee]

I am glad to announce that the sound suggestions that were made have proven to be just that! SOUND. I cleaned all four of the terminals with a wire brush (wearing safety glasses and gloves) and baking soda'd the tops of the batteries as well. I found that one of the terminal posts (pos on driver's side) has a slight loose feeling to it. I will probably end up replacing the pair sometime this next year. Anyhoo, thanks for the advice, it worked. No more battery light!!!

Goodyfleece

[bigcountrysg]

Originally Posted by goodyfleecee

I am glad to announce that the sound suggestions that were made have proven to be just that! SOUND. I cleaned all four of the terminals with a wire brush (wearing safety glasses and gloves) and baking soda'd the tops of the batteries as well. I found that one of the terminal posts (pos on driver's side) has a slight loose feeling to it. I will probably end up replacing the pair sometime this next year. Anyhoo, thanks for the advice, it worked. No more battery light!!!

Goodyfleece

Glad you got the problem resolved. Glad to be some help to you and hopefully saved you some money for now.

[WEWILLE]

Welcome to the site we have some really bright people on here willing to help you out.

[Blue01F250]

Welcome to the .org man! Glad to have you here and is always awesome to see the .org help someone out!