Battery

Tiny
TYEDYEAMY89
  • MEMBER
  • 1992 PLYMOUTH VAN
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
My van wont start. The battery light came on yesterday. The alternator is new and the battery is too. What is wrong?
Friday, January 21st, 2011 AT 4:02 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
Measure the voltage on the two small wires on the back of the alternator while the engine is running. One will have full battery voltage. The secret is the voltage on the other one. It must be less but not 0 volts. Holler back with your measurements. There could be two small wires plugged in or there could be two small nuts on the two small tabs coming out of a small black plastic block.

Caradiodoc
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Friday, January 21st, 2011 AT 7:29 PM

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