Battery Light
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Battery Light
This morning my wife called me and said the battery light came on when she got to work and all the lights dimmed.
So after work I took it to auto zone and had the alternator and battery tested. Both check out good.
When I got it home I took my meter out to check the battery voltage.
12.5v when it was off.
11.7v when it was running.
Wouldn't this mean that there was not charge from the alternator?
I hate to go buy a new alt. if it could be something else.
Any Ideas?
Thanks, David
BTW, the truck is a 2003 F-150 SC 5.4 Auto.
So after work I took it to auto zone and had the alternator and battery tested. Both check out good.
When I got it home I took my meter out to check the battery voltage.
12.5v when it was off.
11.7v when it was running.
Wouldn't this mean that there was not charge from the alternator?
I hate to go buy a new alt. if it could be something else.
Any Ideas?
Thanks, David
BTW, the truck is a 2003 F-150 SC 5.4 Auto.
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Originally Posted by Spotty
When they tested it and said all was OK, was the battery light on or off at that time?
The light was still on.
At first I got the idea the guy didn't know what he was doing.
My wife drove it to work this morning. By the time she got to work the gage was almost to the low line. Looks like I'll be changing the alternator in the parking lot when I get out of work.
David
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Laughing Gas
Joined: Jan 2006
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From: Minnesota
If you can charge up the battery, even a little bit, with no acc. on, you should make it home. Make sure the belt is in good shape and not slipping. Try to buy a GOOD alternator, not the cheapest. The cheapos work, but some whine so bad under load, it will drive you nuts. When you are done, with the engine at idle, put a simple volt meter across the battery terminals, should have 13-14 volts. Good luck, they are not hard to do, I find coming from the top with a 1/2 ratchet and socket is the easiest way to get tension off the belt, you may find another way is easier. Good luck... keep us posted
Spoptty
Spoptty
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Thanks for help guys. I took the alternator off the truck and took it to Advanced Auto to test it and it was only putting out about 4v.
Now the SES light is on. Could this be caused buy having the battery unhooked for so long?
David
Now the SES light is on. Could this be caused buy having the battery unhooked for so long?
David
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