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10-27-2017, 04:11 AM | #1 | |
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Join Date: Oct 2017
Location: Houston, Texas
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About Battery Warning Light, Do You Know Something About it?
Hello there,
I have a Mustang 2008 GT and have the battery warning light coming on and off intermittently for the past 3 months or so. Alternating-current generator was replaced 2 years ago and battery less than 1 year ago. Car starts up and drives just fine and never had any issues until today. This morning when I went to put the key into the run position, I noticed that all the analog dials swept to the max position and back to zero. Car starts up just fine. I drove it about 1-2 miles and parked. Came back to the car, key into run position and the dials swept through again. But when I tried to start, the starter clicked and loss all power to the car. No dome lamps, no trunk lights, nothing. Like there wasn't a battery in the car. Popped the hood, and disconnected the negative cable from the battery. I reconnected the negative cable to the battery and the power came back on in the car. Key back in run position, dials sweep and car starts up just fine. Drove another 1-2 miles and parked for about an hour. Went back to car, key in run position, dials do not sweep and starts up just fine. Drove 3-4 miles and the battery warning light came on for a bit, then went away and came back on again. From my Google search, I found a lot of people saying to "check the grounds". I really don't know what that means. Any ideas? Help! Thanks a bunch. Last edited by Stealthee; 10-27-2017 at 05:17 AM. |
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10-27-2017, 12:42 PM | #2 | |
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Re: About Battery Warning Light, Do You Know Something About it?
I don't want to burst your bubble but if you don't know what "check the grounds" means. Then you have no business under the hood checking electric stuff. Odds are you don't own a voltmeter for proper testing. Regardless how old your battery/alternator are. Most auto part stores will do a load test on the battery and test your alternator to ensure it is charging the battery properly.(free of charge) That's the 2 things I would be checking first.
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10-27-2017, 06:23 PM | #3 | |
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Re: About Battery Warning Light, Do You Know Something About it?
Welcome to AF. From your post, I would suspect a bad NEG (aka Ground) battery cable. If (when) the "no power at all" happens, do this. Turn the Parking lights on (they should not come on) and then open the hood and mess (wiggle, bend, cuss,etc.) with the NEG Batt cable. If the Parking lights come on while doing this, you have found your problem. Good luck and please post back what you find.
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