Re: Charging question

Posted by BigKev On 2018/10/29 7:17:33

My 54 has a standard GM 10SI 3-wire alternator, and if I restart the engine after its already warmed up, then the GEN light will come on as the engine is at a hot idle and the rpms are too low to "excite" the alternator. If I goose the accelerator to bring up the rpms for a second or so, the alternator will kick on and stay on (GEN light turns off) even though the rpms drop back down. Most alternator need to reach a certain RPM to kick on, but they dont have to stay above that RPM to continue to work.