Honda Car Forum

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AZ Nomad wrote:

> On Tue, 14 Feb 2006 11:51:26 -0500, Steve W. <Dugdug56@what.com> wrote:
>
>>...work. The alternator requires voltage to it before it will generate any
>>power. Spinning it won't make any difference.
>
>
> Is that really true?

<Shrek>
Really really.
</Shrek>

> How is it possible to push start a car w/
> a manual tranny if the alternator will never put out any current when
> the battery is dead? Perhaps when a battery is "dead", it still has a few
> volts and that is enough for the alternator to operate?

Yep. Older cars could be push-started with the battery down to 3-4 volts
since all that had to work was the ignition coil. Modern
computer-powered cars are SOL if the voltage drops much below 8-10 volts
because the computer and various sensors won't operate to fire the plugs
and the fuel injectors, and the electric fuel pump may not be able to
develop the required pressure to get the mixture rich enough to fire.

..