SPONSORED LINKS

1979 Other Chevrolet Models Alternator won't charge the elec

Tiny
BILLREYN
  • MEMBER
  • 1979 CHEVROLET
  • V8
  • 4WD
  • AUTOMATIC
  • 108,000 MILES
I have a 1979 Chevy K20 that I have been working on. I recently replaced the alternator because the one that was in it went bad. About two weeks after I replaced it my truck refused to start so I replaced the battery. It worked for a few days then would only work after I jumped the battery. I had the battery tested and was told it was fine however the truck continues to not start. When I hook up a battery charger to it everything works however when I disconect the cables I have no taillights, break lights, windshield wipers etc. I replaced the alternator again with no change. Any suggestions as to where to go from here?
SPONSORED LINKS
Friday, June 13th, 2008 AT 4:39 PM

1 Reply

Tiny
KLSHIEL
  • MECHANIC
  • 163 POSTS
I would check any fuses. Sometimes a fuse will burn up only to re-fuse to itself. This will allow power through, but at a high resistance. Also I would check and clean the grounds as this can add resistance to the system. Also check the resistance on any wires to be sure that it is low, sometimes they rust internally and block flow.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, July 17th, 2008 AT 1:47 PM

Please login or register to post a reply.

Related Alternator Not Charging Content

Alternator Replacement
VIDEO
Alternator Replacement
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