When a charging system quits charging from engine speed rather than from electrical load, it is usually from the alternator. The main culpret in this situation is a rotor winding that is grounding out or shorting from centrifical force as spins faster. It would be wise to check the alternator output and the battery before replacing anything though. If nothing shows up, and even if the alternator tests good, go for the alternator.


Jim Johnson
98 SVT