I have already changed battery and alternator why wont my car charge? It is a 2003 Ford Escape
RESPONSE
There are several reasons why your car won’t charge:
- Faulty “NEW” alternator – How to test an Alternator
- Faulty “NEW” battery
- Bad connections or corrosion
- Blown Fuse – fuse B, 120 amp or Fuse 11, 15 amp
- Bad wiring – Wiring Harness
The charging system consists of the following components:
- generator
- integral voltage regulator
The generator maximum output provides 110 amps.
Charging System
The charging system is a negative ground system consisting of the following:
- generator
- PCM (2.0L Zetec)
- internal voltage regulator
- charging system warning indicator
- battery
- circuitry and cables
The generator is belt-driven by the engine accessory drive system.
Battery
The battery is a 12 volt direct current source connected in a negative ground system. The battery case is sealed and includes two vent holes to release gases. The battery has three major functions:
- engine cranking power source
- voltage stabilizer for the electrical system
- temporary power when electrical loads exceed the generator output current