My alternator and AC does this at idle. The problem is the alternator is not hardly charging anything at idle. We need a smaller pulley on our alternators to get our fancy modern alternators to work. I have my idle set to 1200rpm to combat this, but my AC will drop my engine to 750rpm at idle.Hello. I'm hoping to get some advice. I have a rebuilt 71 - 1.9 to 2,0. Combo cam, big valves etc. I have a Kenlowe electric fan drawing 28 amps. A bit more at start up. Also a Gm alternator 105 amps. With the Combo cam the Idle is somewhat loppy which I like. My problem is that when the fan kicks in it puts such a load on the alternator it wants to kill the Idle. Is there a way to wire it so it doesn't draw so bad on the alternator. I have put the fan back on and have the electric as back-up but I'd sure love to take it off.Thanks for any suggestions.
I’m working on making a fast idle solenoid or a smaller pulley to increase the rotations of my alternator to fix this.