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Charging issues after replacing starter??

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Old Nov 11, 2025 | 06:58 PM
  #1  
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Charging issues after replacing starter??

I recently had to replace my starter on my 7.3idi, and I went to a gear reduction one from oreilly’s (P/N R812323). With the excess cranking from the poor starter beforehand, it fried my alternator. Replaced it and jumped it, still wasn’t charging. Checked regulator by unplugging and jumping F and A terminals in the plug, and it still isn’t charging.
what should I check next? Both the alternator and regulator are new. Could it just be a poor connection from the alternator to the batteries? Or could it be something different?

Also, I replaced the starter solenoid right behind the battery at the same time I was replacing the starter. Could I have simply misplaced a wire to the wrong stud when installing the new one?

I will add a photo of the new solenoid with wires hooked up later this evening so yall can see if any are hooked up wrong.



EDIT:
Figured it out. I had the fusible link wire going to the battery lug on the alternator on the wrong side. Guess I should pay more attention to wire locations in the future when I take stuff off lol
 

Last edited by RUSTEZE; Nov 11, 2025 at 10:42 PM.
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Old Nov 12, 2025 | 06:29 AM
  #2  
tjc transport's Avatar
tjc transport
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mehh. dont beat yourself up too hard, it is an easy mistake to make. none of us are perfect askwholes, no matter what our wives may say
 
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Old Nov 12, 2025 | 08:19 AM
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From: Ougadougou
Originally Posted by RUSTEZE
I recently had to replace my starter on my 7.3idi, and I went to a gear reduction one from oreilly’s (P/N R812323). With the excess cranking from the poor starter beforehand, it fried my alternator. Replaced it and jumped it, still wasn’t charging. Checked regulator by unplugging and jumping F and A terminals in the plug, and it still isn’t charging.
what should I check next? Both the alternator and regulator are new. Could it just be a poor connection from the alternator to the batteries? Or could it be something different?

Also, I replaced the starter solenoid right behind the battery at the same time I was replacing the starter. Could I have simply misplaced a wire to the wrong stud when installing the new one?

I will add a photo of the new solenoid with wires hooked up later this evening so yall can see if any are hooked up wrong.



EDIT:
Figured it out. I had the fusible link wire going to the battery lug on the alternator on the wrong side. Guess I should pay more attention to wire locations in the future when I take stuff off lol
Anymore when it comes to wiring I ALWAYS take a picture before disconnecting a bunch of wires because there will always be that one wire that you can't quite be sure where it went.
 
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Old Nov 12, 2025 | 09:28 AM
  #4  
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From: Western Mass
Originally Posted by WCMtn1990
Anymore when it comes to wiring I ALWAYS take a picture before disconnecting a bunch of wires because there will always be that one wire that you can't quite be sure where it went.
That's one of the best features of a smart phone! Can take a picture, even in the dark, and instantly be able to reference it. Great for wiring, brakes, basically anything you have to disassemble. Alot faster and more reliable than trying to draw a picture.
 
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