My alternator at cold start up charges the battery at 14.4 and the alternator putting out 98 amps, with the head lamps, Cooling fans, and AC blower motor running. After about 10 minutes, the charging voltage drops to 12.85 and the amps down to 75. I'v replaced the alternator with a stock 75 amp from napa twice. I just replaced it with a performance 200 amp alternator. So i'm sure its not the alternator itself. I also just replaced all chargeing cables, negative battery to block, and block to car ground. I changed the voltage sensor wire for the voltage regulator. But yet the car still loses its chargeing voltage slowly once its warmed up. The battery is also recently new as once the voltage gets that low it becomes a 5 amp discharge on the battery for everything to continue to run.
All main charging and negative wires are 0 gauge wires.
So with battery and alternator 100 percent not the problem, and main cables. Can someone please help me with this issue.
have the same problem?
Wednesday, June 20th, 2007 AT 9:23 PM