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Charging system

Tiny
NSTEELMAN
  • MEMBER
  • 1998 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
After jumpstarting my truck it only runs a few minutes, all lights go dim and eventually the whole truck shuts off, lights and all.
Thursday, November 2nd, 2017 AT 3:32 PM

3 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Check battery with a load test, you may have to do a bench charge first. Also, check the alternator output voltage at the main terminal on the back of the alternator, you should be seeing around 14.5 volts. Please post back your findings.
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Thursday, November 2nd, 2017 AT 3:34 PM
Tiny
NSTEELMAN
  • MEMBER
  • 1 POST
Alternator reads 12.21 battery has been charging for an hour.
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Thursday, November 2nd, 2017 AT 3:45 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Alternator out put is to low, get it off and bench tested for internal faults.
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Thursday, November 2nd, 2017 AT 4:08 PM

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