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  #1  
Old 12-11-2014, 09:42 PM
93thedangerranger 93thedangerranger is offline
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Exclamation help! battery dies everyday w/ new alternator!

I just replaced the motor in my 93 ranger 2.3l with same oem motor and it runs great, except that I have to recharge/get a new battery every day. I figured it would be the alternator. I had it tested and it was only sending 12.57 volts so I warrantied it and put the new one in. Once again I had it tested and the same thing. 12.57 volts. I'm assuming it is something with the wire harness to the alternator but I'm not sure. Any hints on finding where my voltage drain is?
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  #2  
Old 12-11-2014, 09:47 PM
Bgporkchop Bgporkchop is offline
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Default Re: help! battery dies everyday w/ new alternator!

some times them rebuilt alternators are no good. I went thru 2 myself. go buy you a new one not a rebuilt one
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Old 12-11-2014, 09:51 PM
93thedangerranger 93thedangerranger is offline
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Default Re: help! battery dies everyday w/ new alternator!

It's a new alternator, I have lifetime on the Ultima platinum.
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  #4  
Old 12-12-2014, 04:32 AM
Jswifto Jswifto is offline
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Some of the older Rangers use to have s fuse in the under hood box for the alt. Check that and also getting the parts from a discount auto parts is not always the best way.
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  #5  
Old 12-12-2014, 11:27 AM
cowboybilly9mile cowboybilly9mile is offline
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Default Re: help! battery dies everyday w/ new alternator!

Quote:
Originally Posted by 93thedangerranger View Post
I just replaced the motor in my 93 ranger 2.3l with same oem motor and it runs great, except that I have to recharge/get a new battery every day. I figured it would be the alternator. I had it tested and it was only sending 12.57 volts so I warrantied it and put the new one in. Once again I had it tested and the same thing. 12.57 volts. I'm assuming it is something with the wire harness to the alternator but I'm not sure. Any hints on finding where my voltage drain is?
There is a contradiction in the problem description that needs clarification.

a) You said you replaced you alternator because' " it was only sending 12.57 volts".

b) Any hints on finding where my voltage drain is?

So which is it, an alternator that isn't delivering adequate voltage to keep they battery charged or do you have excess drain (defined as a current draw above 50mA) on your battery when it's not running?
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Old 12-12-2014, 11:38 AM
93thedangerranger 93thedangerranger is offline
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Default Re: help! battery dies everyday w/ new alternator!

I have no problem letting the vehicle sit, the battery only loses charge while driving.
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Old 12-12-2014, 11:58 AM
cowboybilly9mile cowboybilly9mile is offline
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Default Re: help! battery dies everyday w/ new alternator!

Bench test the alternator.
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Old 12-12-2014, 12:09 PM
buggman buggman is offline
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Definitely sounds like a bad alt, possibly bad contacts at the battery or grounds.
Triple check all connections & i'd get the alt swapped if its under warranty.
You should have about 12.5v at rest & about 14.5v when running.
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Old 12-12-2014, 05:29 PM
transman304 transman304 is offline
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Default Re: help! battery dies everyday w/ new alternator!

looks to be a couple fusable links/relays that could be giving you problems.

image.jpg
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  #10  
Old 12-12-2014, 08:21 PM
Jswifto Jswifto is offline
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Where you you testing the alternator voltage at? If you are testing it at the battery then you are reading batt voltage. If you look at at the pic in the last post you will see there is a 15 amp fuse in the distribution box under the hood.
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  #11  
Old 12-13-2014, 01:41 PM
93thedangerranger 93thedangerranger is offline
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Default Re: help! battery dies everyday w/ new alternator!

Thanks for that diagram it helped me fix the problem! The plug underneath the fuse box was undone and the linkage fuse was blown. Thanks yall!
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alternator, battery, drained batt, electrical, voltage

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