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new battery and alternator not charging

 
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Old 03-13-2019, 03:33 PM
Rugratt69
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Angry new battery and alternator not charging

I have a 92 f150 noticed that it wasnt charging so replaced the alternator and charged fine for a day and then back to no charge
what are the causes and solutions

Thanks
 
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Old 03-13-2019, 03:48 PM
lisagoud
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terrible connections will definately cause that problem. However, I have received numerous junk alternators right out of the box. I alwaYS HAVE THE PARTS STORE HOOK UP THEIR ALTERNATOR ON THEIR TESTER BEFORE i PURCHASE IT, i WOULD BRING IT BACK TO THEM TO SEE IF IT'S ANY GOOD. IF GOOD, I WOULD DEFINATELY REPLACE BATTERY TERMINALS, ALSO YOU DIDN'T SAY WHAT TYPE OF ALTERNATOR IT IS.
 
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Old 03-13-2019, 04:19 PM
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The battery light is not burned out?
 
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Old 03-13-2019, 05:04 PM
Rugratt69
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Originally Posted by lisagoud View Post
terrible connections will definately cause that problem. However, I have received numerous junk alternators right out of the box. I alwaYS HAVE THE PARTS STORE HOOK UP THEIR ALTERNATOR ON THEIR TESTER BEFORE i PURCHASE IT, i WOULD BRING IT BACK TO THEM TO SEE IF IT'S ANY GOOD. IF GOOD, I WOULD DEFINATELY REPLACE BATTERY TERMINALS, ALSO YOU DIDN'T SAY WHAT TYPE OF ALTERNATOR IT IS.
yeah sorry i had to look also. Its a 2g
 
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Old 03-13-2019, 05:06 PM
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[QUOTE=ford390gashog;18538118]The battery light is not burned out.
never seen it on before
 
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Old 03-13-2019, 05:10 PM
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Yup

Originally Posted by lisagoud View Post
terrible connections will definately cause that problem. However, I have received numerous junk alternators right out of the box. I alwaYS HAVE THE PARTS STORE HOOK UP THEIR ALTERNATOR ON THEIR TESTER BEFORE i PURCHASE IT, i WOULD BRING IT BACK TO THEM TO SEE IF IT'S ANY GOOD. IF GOOD, I WOULD DEFINATELY REPLACE BATTERY TERMINALS, ALSO YOU DIDN'T SAY WHAT TYPE OF ALTERNATOR IT IS.
im also gonna do that just called as a matter of fact lol thx
 
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Old 03-13-2019, 05:13 PM
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2g's have the 3 wire plug-in as I remember...they are also famous for being completely junked up and a lot of times a new connector will put you far head in solving this issue.,
 
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Old 03-13-2019, 05:24 PM
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Originally Posted by lisagoud View Post
2g's have the 3 wire plug-in as I remember...they are also famous for being completely junked up and a lot of times a new connector will put you far head in solving this issue.,
Ive changed the stator connector but not the voltage regulator connecror
 
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Old 03-13-2019, 05:27 PM
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[QUOTE=Rugratt69;18538178]
Originally Posted by ford390gashog View Post
The battery light is not burned out.
never seen it on before
what would that do for it
 
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Old 03-13-2019, 06:26 PM
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Has the cluster been replaced?
 
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Old 03-13-2019, 06:26 PM
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[QUOTE=Rugratt69;18538203]
Originally Posted by Rugratt69 View Post
what would that do for it
If your alternator (battery or charge indicator) light is burned out then your alternator won't charge. When you start your vehicle the bulb supplies just enough resistance to trigger the alternator to begin charging. Some have replaced all of their dash lights with LED's, including the battery light, and many have discovered their alternator won't charge. Putting the regular bulb back in for the alternator solves the issue.
 
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Old 03-13-2019, 06:34 PM
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Oh ok

[QUOTE=Ddaybc;18538295]
Originally Posted by Rugratt69 View Post
If your alternator (battery or charge indicator) light is burned out then your alternator won't charge. When you start your vehicle the bulb supplies just enough resistance to trigger the alternator to begin charging. Some have replaced all of their dash lights with LED's, including the battery light, and many have discovered their alternator won't charge. Putting the regular bulb back in for the alternator solves the issue.
good to know but nevr touched the cluster at all mind you the light as far as i know hasnt worked before
 
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Old 03-13-2019, 06:43 PM
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[QUOTE=Rugratt69;18538306]
Originally Posted by Ddaybc View Post
good to know but nevr touched the cluster at all mind you the light as far as i know hasnt worked before
The instrument cluster has lights on when i turn the lughts on but the battery light amongst the tack dont illuminate
 
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Old 03-13-2019, 09:40 PM
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The battery light should light when you turn the key to "ON", without the engine running. As mentioned, the current through the bulb is what triggers the alternator to start charging. Not sure what the dash layout is on the '92, but on my 90 and 91, that little battery light is easy to miss at start up.
 
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Old 03-14-2019, 07:17 AM
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There is a resistor in parallel with the instrument cluster bulb that is used to supply a current path if the bulb burns out. That resistor could now be open or has a bad connection. I have seen a few examples where the resistor is missing from the factory. Since the OP states the bulb has never lit up, but the alternator was previously charging, I suspect this is not the case but something has happened. Time to pull the cluster.

A diagram for reference:


 

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