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From: johngdole on 14 Aug 2007 22:36
Interesting solution. Usually the alternator comes up with enough
juice. Better clean my sparkling battery posts again.



On Aug 14, 3:30 pm, "Honda-Man" <eastviewontheba...(a)verizon.net>
wrote:
> All,
>
> I have solved the problem I posted, and I am a little ashamed at the same
> time. This past weekend I went to start my car and nothing happened, then
> tried it again and it started. I checked the battery and found the positive
> post to be excessively corroded under the red plastic cover. I took the
> connector off and cleaned it well including the battery post. The car
> starts and runs perfect now, NO MORE HESITATION! The lack of battery juice
> must have been causing the bucking and hesitation.
>
> Thanks to all for your suggestions.

From: Mark A on 14 Aug 2007 23:31
<johngdole(a)hotmail.com> wrote in message
news:1187145366.384604.38770(a)i13g2000prf.googlegroups.com...
> Interesting solution. Usually the alternator comes up with enough
> juice. Better clean my sparkling battery posts again.

Normally, the alternator does have enough juice to power your car once it is
started, but a battery with a positive connection that leaks to ground
because of corrosion can act like a "black hole" and suck up current from
the entire electrical circuit.

But even if the battery is OK, think of the battery as a UPS for a computer.
It keeps the current constant during momentary fluctuations in the power.
Considering how many times your spark plugs ignite (about 50 times per
second under normal driving), even the slightest loss of constant power from
the alternator will cause problems. If cars did not have batteries, then
they would need large capacitors (like electronic equipment) to maintain
constant DC current.


From: johngdole on 15 Aug 2007 01:26
Yeah, I notice those large caps on circuit boards are getting larger.

But difficult to believe than even a 90amp alternator working at 30%
capacity can't feed Honda-man's Camry. Now I wonder what plugs were
used and when were they last changed? I use exclusively NGK Iridium -
IX or -Laser on cars I help work on.


On Aug 14, 8:31 pm, "Mark A" <nob...(a)nowhere.com> wrote:
> Normally, the alternator does have enough juice to power your car once it is
> started, but a battery with a positive connection that leaks to ground
> because of corrosion can act like a "black hole" and suck up current from
> the entire electrical circuit.
>
> But even if the battery is OK, think of the battery as a UPS for a computer.
> It keeps the current constant during momentary fluctuations in the power.
> Considering how many times your spark plugs ignite (about 50 times per
> second under normal driving), even the slightest loss of constant power from
> the alternator will cause problems. If cars did not have batteries, then
> they would need large capacitors (like electronic equipment) to maintain
> constant DC current.


From: Mark A on 15 Aug 2007 01:42
<johngdole(a)hotmail.com> wrote in message
news:1187155601.904065.204230(a)g12g2000prg.googlegroups.com...
> Yeah, I notice those large caps on circuit boards are getting larger.
>
> But difficult to believe than even a 90amp alternator working at 30%
> capacity can't feed Honda-man's Camry. Now I wonder what plugs were
> used and when were they last changed? I use exclusively NGK Iridium -
> IX or -Laser on cars I help work on.

It is not a question of whether it can "feed" the plugs. It has to do with
momentary (milliseconds) lapses in DC current. If we were talking about AC,
that would be different, but DC circuits typically require some kind of
battery or capacitor in the power supply. This is especially true with cars
that have computer controlled electronic ignitions (all modern cars).

If you hooked up your desktop computer to a DC alternator without a
capacitor or battery (bypassing your AC to DC power supply), it would
constantly be rebooting.


From: Honda-Man on 15 Aug 2007 08:03
Great conversations, and very informative. In regards to my spark plugs, I
replaced them with bosch four prongs ($4.50 a piece) , since I thought the
plugs may have been the reason for the hesitation. I now know that Toyota
prefers NGK and will use them in the future.


"Mark A" <nobody(a)nowhere.com> wrote in message
news:Rnwwi.21529$jH3.18076(a)bignews6.bellsouth.net...
> <johngdole(a)hotmail.com> wrote in message
> news:1187155601.904065.204230(a)g12g2000prg.googlegroups.com...
>> Yeah, I notice those large caps on circuit boards are getting larger.
>>
>> But difficult to believe than even a 90amp alternator working at 30%
>> capacity can't feed Honda-man's Camry. Now I wonder what plugs were
>> used and when were they last changed? I use exclusively NGK Iridium -
>> IX or -Laser on cars I help work on.
>
> It is not a question of whether it can "feed" the plugs. It has to do with
> momentary (milliseconds) lapses in DC current. If we were talking about
> AC, that would be different, but DC circuits typically require some kind
> of battery or capacitor in the power supply. This is especially true with
> cars that have computer controlled electronic ignitions (all modern cars).
>
> If you hooked up your desktop computer to a DC alternator without a
> capacitor or battery (bypassing your AC to DC power supply), it would
> constantly be rebooting.
>


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