Alternator Doesnt Charge Battery Until I Blip the Gas - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

vegita319 · 10-19-2006, 04:02 AM

So after getting a new alternator and redoing the lower wiring harness, the alternator doesnt charge my battery until I blip the gas pedal. My voltage will be at around 11.9 - 12.1 or so. As soon as I blip the throttle, it jumps up to 13.8-14.2 where it should be.

After talking to a bunch of people, they say that my voltage regulator is not getting a signal and thus when I blip it, it bypasses the signal and charges the system anyways. This is the reason why I redid my lower harness. I checked for continuity on all my wires and they all check out ok. I also sanded down the connectors and cleaned out the pins and plugs.

Now I'm stumped. Maybe I'm not looking at the right places. I printed out the wiring diagram for the charging system and everything checks outl.

Anyone know anything about charging systems that can offer me some input on other locations to check? Maybe its some other place besides the voltage regulator.

P.S. All the fuses are good and the car does drive once i blip the gas. It's just the initial startup. I read somewhere that the alternator might need the engine idle to be at a cerrtain rpm before it charges the system. I turned up the Idle and nothing, still the same thing.

10-19-2006, 04:02 AM	#1
vegita319 Zilvia Junkie Join Date: Aug 2004 Location: Long Beach, CA Age: 39 Posts: 460 Trader Rating: (1) Feedback Score: 1 reviews	Alternator Doesnt Charge Battery Until I Blip the Gas So after getting a new alternator and redoing the lower wiring harness, the alternator doesnt charge my battery until I blip the gas pedal. My voltage will be at around 11.9 - 12.1 or so. As soon as I blip the throttle, it jumps up to 13.8-14.2 where it should be. After talking to a bunch of people, they say that my voltage regulator is not getting a signal and thus when I blip it, it bypasses the signal and charges the system anyways. This is the reason why I redid my lower harness. I checked for continuity on all my wires and they all check out ok. I also sanded down the connectors and cleaned out the pins and plugs. Now I'm stumped. Maybe I'm not looking at the right places. I printed out the wiring diagram for the charging system and everything checks outl. Anyone know anything about charging systems that can offer me some input on other locations to check? Maybe its some other place besides the voltage regulator. P.S. All the fuses are good and the car does drive once i blip the gas. It's just the initial startup. I read somewhere that the alternator might need the engine idle to be at a cerrtain rpm before it charges the system. I turned up the Idle and nothing, still the same thing.