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over charging battery

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Old Jul 17, 2014 | 06:43 PM
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Default over charging battery
This is for a 99 xj sport. Alt is testing back fine. What else can cause this or is it just the alt or regulator in the alt. Please let me know.thanks
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Old Jul 17, 2014 | 06:51 PM
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There is a temp sensor in the bottom of the battery tray. If it is giving bad information to the ECM it can cause an over charging condition.
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Old Jul 17, 2014 | 07:11 PM
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Originally Posted by Bustedback
There is a temp sensor in the bottom of the battery tray. If it is giving bad information to the ECM it can cause an over charging condition.
Sweet we will check that out.Thanks
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Old Jul 17, 2014 | 08:41 PM
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Originally Posted by Bustedback
There is a temp sensor in the bottom of the battery tray. If it is giving bad information to the ECM it can cause an over charging condition.


Just found out he already replaced It on his xj
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Old Jul 18, 2014 | 06:50 AM
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Originally Posted by Bustedback
There is a temp sensor in the bottom of the battery tray. If it is giving bad information to the ECM it can cause an over charging condition.

What else could it be if its not the alternator and temp sensor was replaced
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Old Jul 18, 2014 | 07:38 AM
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How old is the battery, and how many CCA is it rated for?
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Old Jul 18, 2014 | 10:30 AM
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Originally Posted by Bustedback
How old is the battery, and how many CCA is it rated for?

Brand new battery about 2 wks old. And 770 CCA
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Old Jul 18, 2014 | 11:05 AM
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If it is an Autozone Duralast (Neverlast) or Walmart Everstart (Neverstart) battery, it very well could have a bad cell in it already.

You need to take it where ever you bought it and have a load test done on it.
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Old Jul 18, 2014 | 11:09 AM
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How do you know that your battery is being overcharged?

Charging voltage is regulated by the ECM.
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Old Jul 18, 2014 | 11:48 AM
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Originally Posted by PocketsEmpty
How do you know that your battery is being overcharged?

Charging voltage is regulated by the ECM.
Battery is leaking replaced it caused it to leak again.
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Old Jul 18, 2014 | 01:17 PM
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Originally Posted by Mikeythrash
Battery is leaking replaced it caused it to leak again.



Leaking...Caused it to leak again....

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Old Jul 18, 2014 | 02:51 PM
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Originally Posted by Mikeythrash
Battery is leaking replaced it caused it to leak again.
boiling out the caps?
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Old Jul 18, 2014 | 04:18 PM
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Originally Posted by Kingfisher

boiling out the caps?
Yup it is
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Old Jul 18, 2014 | 05:11 PM
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Resistance test the cables?
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Old Jul 18, 2014 | 05:25 PM
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Originally Posted by Turbo X_J
Resistance test the cables?
I think it needs a new ecm and its sending information thinking It needs charged when it doesnt causing it to over charge
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