Anyone running a D975?

[kl0wn]

No, not idle, just running at a stop light. Lol no I get 14.0+ at idle without any serious current draw.

I am confused on what you are saying. So when you are driving, and come up to a red light, you stop, turn your music down/off, and your voltage is down at 12.4?

[RooTxBeeR]

No, not full tilt, just 12.4 at a red light no bass or no serious current draw. Once I give it any throttle or take off the light it goes up to alt charging level, 14.0+. I just want to know what the resting voltages of people that have a D975, so I can see what to expect when my alt isn't putting charging power when I am stopped.

[OrionStang]

Sounds like a bad alternator

[Guest]

12.4 while idling sounds like a bad alternator, or just one that doesn't output enough current while turning at slower speeds (idling). isnt yours like 60 amps?

[mrd6]

Yeah I would be more worried about your alt at this point. Your battery should be resting higher but if you dont have a charger, then its probably resting that low due to the bad alt

[J R]

SO WHAT YOUR SAYING IS..................

LOL.

12.4 at idle means you got some wacky ass alternator, or you must have some gay electric car that shuts off at a red light?

edit: Alternators toast.

[RooTxBeeR]

Well I don't believe my alt is toast, because while driving, I never get below 13.2 at full tilt, and yes its a 60A alt. My car is what is in my sig, and not an electric car. Also how could it not be my battery, when the battery itself is sitting at 12.4 like that? I have drained it numerous times and had to get it jumped a lot. The battery has seen lots of abuse.

[Guest]

alt just probably cant sustain the car enough while idling. probably outputs like 30 amps or some shit.

[J R]

Alternators should be charging even at idle.

12.4v is what your battery will hold when the car is off. Meaning your alternator isn't charging at all at idle.

Yes, it is charging while driving, but absolutely should be charging at idle.

My truck idles a 14.3 when hot and that's stock electrical. My 1972 Monte Carlo with a cheap ass battery and the original wiring and alternator will never read below 13.8v.

Just saying, you should replace or upgrade and Kranny is right about very low output.

[RooTxBeeR]

Dont get me wrong, In neutral, and Park, it normally is at 14.0+. Somtimes it goes down but the alt will kick in and jump it back up. it only does this when I am in drive and braking or stopped and there is nothing putting a higher RPM to the alt. I think it's a combination of the Honda's ELD system, and the low Amperage of the stock alt. And possibly my battery, I am sure it's not made for what I am doing to it. What I have is just a little bit before it's limits lol.