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Old Oct 19, 2016 | 06:15 PM
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Battery keeps dying

I have a 1999 f250 super duty and something keeps draining my battery, I replaced the old one and im having the same problem. What could it be?
 
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Old Oct 19, 2016 | 06:20 PM
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Does the alternator feel hot after it has sat overnight?

If yes.....it's the alternator.
 
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Old Oct 19, 2016 | 06:43 PM
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Originally Posted by clem1226
Does the alternator feel hot after it has sat overnight?

If yes.....it's the alternator.
I'll look into it, I have been disconnecting the negative terminal on my battery but it doesn't always work. And sometimes it will start up with no problems after sitting for a couple of weeks.
 
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Old Oct 19, 2016 | 07:40 PM
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Do you monitor voltage or anything with a Bluetooth dongle, Scangauge or Tuner? Have you load tested the battery or Alternator? Which Engine do you have? (Please update signature to reflect important details)

I had dirty terminals on mine, once cleaned voltage was back up to 13.8-14v.
 
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Old Oct 19, 2016 | 09:07 PM
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Originally Posted by Bently_Coop
Do you monitor voltage or anything with a Bluetooth dongle, Scangauge or Tuner? Have you load tested the battery or Alternator? Which Engine do you have? (Please update signature to reflect important details)

I had dirty terminals on mine, once cleaned voltage was back up to 13.8-14v.
unfortunately I don't have anything to test the volts battery is brand new, terminals are brand new. I have the 5.4 triton v8
 
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Old Oct 19, 2016 | 11:35 PM
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Mine would drain randomly, sometimes it could sit for a week and be fine, other times the battery would be drained over night. Couldn't figure it out until one day I was driving and the speedo started acting funny, turn signals acted weird, then the speedo quit altogether. When I parked and took out the key I noticed the blower was still running... I started turning the fan to the off position every time I left the truck and it never drained again. Soon after I pulled out the GEM to make sure it wasn't swimming, cleaned it and all the electrical gremlins went away.
 
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Old Oct 20, 2016 | 03:36 AM
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Buy a multimeter; they're handy and easy to use.

You can use it to test the battery while the engine is running; if the volts are over 14.8, then your alternator is overcharging and killing off your battery.
 
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Old Oct 20, 2016 | 06:16 AM
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Originally Posted by khxor
Mine would drain randomly, sometimes it could sit for a week and be fine, other times the battery would be drained over night. Couldn't figure it out until one day I was driving and the speedo started acting funny, turn signals acted weird, then the speedo quit altogether. When I parked and took out the key I noticed the blower was still running... I started turning the fan to the off position every time I left the truck and it never drained again. Soon after I pulled out the GEM to make sure it wasn't swimming, cleaned it and all the electrical gremlins went away.
What did you do to clean the GEM?
 
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Old Oct 20, 2016 | 12:03 PM
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Originally Posted by gabriell12123
What did you do to clean the GEM?
I removed it, expecting to find evidence that it had gotten wet (which it clearly hadn't) opened it and cleaned all the brick dust out of it and the connectors. Apparently that was all mine needed to work properly again.
 
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Old Oct 21, 2016 | 11:43 AM
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Originally Posted by khxor
I removed it, expecting to find evidence that it had gotten wet (which it clearly hadn't) opened it and cleaned all the brick dust out of it and the connectors. Apparently that was all mine needed to work properly again.
I'll tried to remove mine yesterday but it seemed impossible to remove...
 
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Old Oct 21, 2016 | 12:11 PM
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Originally Posted by khxor
I removed it, expecting to find evidence that it had gotten wet (which it clearly hadn't) opened it and cleaned all the brick dust out of it and the connectors. Apparently that was all mine needed to work properly again.
I'll tried to remove mine yesterday but it seemed impossible to remove...
 
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Old Oct 21, 2016 | 07:37 PM
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It can be a little tight getting to the bolts holding the connectors on, but it's not too bad.

Some guidance here:
https://www.ford-trucks.com/forums/1...k-and-gem.html
 
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Old Oct 21, 2016 | 08:01 PM
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Originally Posted by khxor
It can be a little tight getting to the bolts holding the connectors on, but it's not too bad.

Some guidance here:
https://www.ford-trucks.com/forums/1...k-and-gem.html
Thank you, I'll look at this tomorrow.
 
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Old Oct 23, 2016 | 01:57 PM
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Found some corrosion. Is there a way to clean this? GEM wasnt wet or really dusty, but this part itself was kinda dusty
 
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Old Oct 23, 2016 | 10:55 PM
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Originally Posted by gabriell12123
Found some corrosion. Is there a way to clean this? GEM wasnt wet or really dusty, but this part itself was kinda dusty
Compressed air should blow out any dust. If it doesn't, you can try a quality contact cleaner such as CRC
03070 -- Contact Cleaner, 14 Wt Oz
 
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