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Unread 04-28-2009, 01:12 PM   #1
repquiroz
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1996 XJ Cherokee 
 
Join Date: Apr 2009
Location: North Carolina
Posts: 1
Battery Drain 96' XJ

I bought the jeep about 6 months ago.. 1996 Jeep Cherokee Sport..
The battery dies overnight.. Im pretty sure there is a battery drain.

MONDAY--I talked to my mechanic over the phone, he said that i should fully charge the battery, hook it up, turn on the car, remove negative battery cable while car is running and if it doesnt shut off than its not the alternator.. He told me to get new battery...

TUESDAY--I got new battery. Brand new... hooked it up.. of course it turned on.. next morning i noticed that the battery was a little iffy (all the lights were dim, and the car barely turned on...)

WEDNESDAY-- Morning after that the battery is dead again... I check all the fuses (i looked at them and replace one...)

What do you think it is?, Please help...
If you think is a battery drain, how can i stop the drain??
I dont really want to take it to the shop if i can do it my self...

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Unread 04-29-2009, 08:32 AM   #2
Angry_bald_guy
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1985 J-Series Truck 
 
Join Date: Feb 2009
Location: Lancaster, Kentucky
Posts: 620
You will have to hunt down the circuit that is draining the battery. Start checking voltage with a multi meter, once you find a wire with voltage on it and everything is off, you may have found your drain. BUT, make sure that the wire you have voltage on is not supposed to have voltage on it... For instance, if your hood is up, and you are detecting voltage on the circuit for the hood light... use some common sense...
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Unread 04-29-2009, 03:22 PM   #3
scout80xj
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2000 XJ Cherokee 
 
Join Date: Mar 2009
Location: Iron Mountain MI
Posts: 23
Quote:
Originally Posted by repquiroz View Post
I bought the jeep about 6 months ago.. 1996 Jeep Cherokee Sport..
The battery dies overnight.. Im pretty sure there is a battery drain.

MONDAY--I talked to my mechanic over the phone, he said that i should fully charge the battery, hook it up, turn on the car, remove negative battery cable while car is running and if it doesnt shut off than its not the alternator.. He told me to get new battery...

TUESDAY--I got new battery. Brand new... hooked it up.. of course it turned on.. next morning i noticed that the battery was a little iffy (all the lights were dim, and the car barely turned on...)

WEDNESDAY-- Morning after that the battery is dead again... I check all the fuses (i looked at them and replace one...)

What do you think it is?, Please help...
If you think is a battery drain, how can i stop the drain??
I dont really want to take it to the shop if i can do it my self...
First off DO NOT disconnect the battery with the engine running. Doing so could cause high voltage spikes which could fry your alternator and damage other electronics. To check parasitic drain you need an ammeter (most good multimeters have ability to read amps). And to check alternator you need to have an inductive amp probe or you could take the alternator off and bench test it (most auto parts stores will do this)
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Unread 04-29-2009, 03:50 PM   #4
customizer1000
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1995 XJ Cherokee 
 
Join Date: Apr 2009
Location: ohio
Posts: 240
un hook your neg cable put a test light from the neg to ground and start pulling fuses whichever one makes the light go out is the circut that has the draw on it good luck
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