Car not starting after replacing the alternator

1994 HONDA CIVIC
200,000 MILES • 1.5L • 4 CYL • 2WD • MANUAL
Avatar
ILLTELLYOUL8R
  • MEMBER
  • 1 POST
My alternator was going bad so I decided to replace it with a new one and get new spark plugs too. It's my first time doing an alternator and I forgot to undo the battery terminals before I started. I torqued the spark plugs to spec (13 ft/lbs) and put the new alternator the same exact way the old one came out. When I tried to start the car I got nothing. No dash lights no crank no power. I went to AutoZone and O'reilly's to test my battery, alternator, and starter to make sure all parts are still good and they are. I'm not sure why my car isn't starting, the only thing I can think of at this point is a bad wire in the wiring harness to the alternator.
Apr 7, 2021 at 3:02 AM
Advertisement
Avatar
STRAILER
  • Experienced Mechanic
  • 55,292 POSTS
Was there any sparks when doing the job? Let start by checking all fuses. here is a guide to help with the fuse locations in the diagrams below:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If all okay please check the battery cable connections this guide can help:

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
Apr 8, 2021 at 10:07 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.