battery or alternator

2004 FORD MUSTANG
6 CYL • 2WD • MANUAL
Avatar
DYLANJFIELDS
  • MEMBER
  • 1 POST
My car has been working fine the last couple of weeks but today when i was driving it it started to die according to the meter and then just quit after all the battery juice was gone then i got a jump and it died almost immediatley
Aug 13, 2011 at 6:05 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
CARADIODOC
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 34,308 POSTS
Generator is not recharging the battery. Use an inexpensive digital voltmeter to measure the battery voltage with the engine off and with it running. A fully charged battery will measure 12.6 volts. A good but discharged one will read closer to 12.0 volts.

With the engine running, the voltage must be between 13.75 and 14.75 volts. If it's low, measure the voltages on the back of the generator by back-probing the wires through the rubber seals. Holler back with those numbers.
Aug 13, 2011 at 6:17 AM
Advertisement