Gen 2 light comes on when I restart engine

[1 Patriot-of-many]

I read somewhere in the TM's to blip the throttle, I do that and mine goes out and stays out. Wondering why it comes on though in the first place? Brand new batteries BTW.

 

[M1008driver]

I think it just works that way. I've never driven one where it didn't come on until you hit the pedal.

GEN 1 and GEN 2 Lights. On all models except the M1010 Ambulance, generator lights come on when ignition key is in the “ON” position, but before engine isstarted. After engine starts, lights should go out and remain out. If either or both lights remain on after engine starts, press accelerator and let engine return to idle. If lights remain on or come on during operation of truck, IMMEDIATELY SHUT DOWN ENGINE and notify your supervisor. M1010
Ambulance has no generator warning lights.

 

[doghead]

The alternator needs to rev up, to get started working. (layman's terms)

 

[doghead]

I always start with the pedal depressed a bit. Never have the light on dim, and the fast idle solenoid drops into place easier. Hot or cold, it's just a habit to me.


I rebuilt my alts with low cut in regulators, and it eliminates the light issue.