SPONSORED LINKS

Alternator problems 3 rebuilt alternators and 1 new one and they all fail?

Tiny
EDDIEM11959
  • MEMBER
  • 1997 NISSAN ALTIMA
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 129,000 MILES
I've put 3 rebuilt alternators from AutoZone and 1 new one, and they all fail. I took it to my mechanic, and he said the new alternator was putting out 8.4 volts. Also, my dash lights and rpm and speedometer don't work. My fuses seem to be okay. Can you help?
SPONSORED LINKS
Monday, August 21st, 2023 AT 1:42 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,527 POSTS
Yep, so the battery has an internal short or you have high resistance in one of the wires, this guide can help you see what's going on and I have included the alternator wiring diagrams so you can see which wires to test.

https://www.2carpros.com/articles/how-to-check-wiring

and

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

Check out the images (below). Please let us know what happens.
Image (Click to make bigger)
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, August 21st, 2023 AT 4:37 PM

Please login or register to post a reply.

Related Alternator Fuse Content

How to Use a Test Light
VIDEO
How to Use a Test Light
Instructional repair video
Alternator Replacement
GUIDE
Alternator Replacement
Got a red battery warning light on? This most likely means the alternator has gone out and needs a replacement. To confirm the failure use a voltmeter to test the alternator...
VIEW MORE

Sponsored links