> There are two copper contacts that conduct battery current to the
> motor through the plunger solenoid. These wear out with time and
[quoted text clipped - 6 lines]
>
> http://www.4x4wire.com/toyota/maintenance/starter/
I tested the horn and it was way down low.
This seems to point to the alternator after all: I previously tested that by
removing the negative on the battery when the engine was running, and it
kept running. I also tested the alternator by shining the lights at a wall
and revving the engine, noticing no change in the intensity of the light.
When I got an instant start with a jump, I realize it must be the alternator
after all.
Am I right?
---firefly
johngdole@hotmail.com - 21 May 2008 05:10 GMT
Quiet horn -- Low current form the battery?
Battery and alternator brush assemblies are periodic maintenance
items. The brushes ($20) wear out typically around 120K miles. The
battery I just replace every 5-6 years no questions asked. Walmart has
excellent ones made by Johnson Controls (~$45). A weak battery strains
and wears out the altrnator and vise versa.
If the car keeps running AFTER starting, then your alternator is
providing enough current and most likely still good. So how old is the
battery? I wouldn't ignore the starter contacts either, especially if
you can start after repeated clicking.
> I tested the horn and it was way down low.
>
[quoted text clipped - 9 lines]
>
> ---firefly
johngdole@hotmail.com - 21 May 2008 05:17 GMT
Oh BTW about low horn, the battery could be low because of repeated
cranking. The alternator really isn't meant to charge a completely low
battery. This puts a lot of strain on it and it will run very hot.
Best to get a battery charger (Black and Decker or Schumacher) high
frequency charger 2/4/6 amps around $30.
> I tested the horn and it was way down low.
>
[quoted text clipped - 9 lines]
>
> ---firefly
Ray O - 21 May 2008 05:48 GMT
>> There are two copper contacts that conduct battery current to the
>> motor through the plunger solenoid. These wear out with time and
[quoted text clipped - 21 lines]
>
> ---firefly
The proper way to test the vehicle's charging and starting system is with an
ammeter, voltmeter, and load tester. There are places that will check this
stuff for little or no cost, usually much less than the cost of a
hit-or-miss parts replacement.

Signature
Ray O
(correct punctuation to reply)
johngdole@hotmail.com - 21 May 2008 06:04 GMT
Ray is right. Should have also mentioned that Autozone, your local
NAPA store and others will test many models of alternators, starters
and batteries.
> The proper way to test the vehicle's charging and starting system is with an
> ammeter, voltmeter, and load tester. There are places that will check this
[quoted text clipped - 4 lines]
> Ray O
> (correct punctuation to reply)