What controls the voltage regulater output?

Tiny
CINCOACDOGGIE
  • MEMBER
  • 2003 PONTIAC SUNFIRE
  • 114,000 MILES
New alternater, new batte. Ry, voltage output 12.6 volts to battery.
Monday, September 12th, 2011 AT 8:21 PM

1 Reply

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Did you have the new alternator tested before you left the store?Also make sure you have battery voltage going to the B+ terminal of the alternator the one with the nut holding the wire to the alternator. The pcm controls the voltage on the alternator. Do you have any codes?Have you checked yet?If not scan the computer for codes and let me know the exact code numbers you have.
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Monday, September 12th, 2011 AT 9:11 PM

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