[Supras] Anyone have any issues with the Exide Sub

[Mike Nikolai]

Gentlemen,

I have tested the Alternator again and it passed the testing.  I installed a 
new Optima Battery and the results were similar.

When I tested the voltage from the alternator stud to the battery it was 
.15. and the battery was reading 14.1 volts, then the volts would drop when 
ever I dropped the ebrake, or hit someting that would cause a small draw on 
the current.

I had done some brain storming and thinking...perhaps the electric fans were 
attached to the wrong power source inside the drivers side kick pannel.

I cut the wire that draws power from the drivers side fuse pannel for the 
electric fans that powers the relay I installed and my issue was solved for 
the most part.  It would stay steady at 14.3 Volts to 14 volts no matter 
what I did.  After I cut the wire, the voltage from the alternator to the 
positive terminal was 0.05 volts with the head lights on.

The car ran fine for about 5 min then I was messing around and put more load 
on the car, etc. The voltage would drop them come back on again.  Eventually 
it came to the point where it dropped the voltage down to 12.8 and I shut 
the car off.

I took the newley replaced exide battery in to test it. After being 
installed and running in the car for about 10 minutes earlier in the week, 
it failed the load test again. (I purchased the Optima Battery last night).

Still an ongoing saga, but I am making head way when ever I have time.

Soon the car will be parked for the winter when I will start the proceedure 
to install the new ported and polished head with a 5 angle valve job and 1mm 
oversized valves.

If my issue is not resolved by the time I dissasemble the top half of the 
motor I will go back and look more closely at all the connections and maybe 
just purchase a brand new alternator from toyota or take my other one in to 
be rebuilt for higher amperage by a shop that is reputable.  I am getting 
tired of replacing these partsource jobber/ remanufactured alternators.

Mike


----- Original Message ----- 
From: "Bill" <bwright1818 at comcast.net>
To: <supras at supras.com>
Sent: Tuesday, September 18, 2007 9:10 PM
Subject: Re: [Supras] Anyone have any issues with the Exide Sub


> Geez, for once I have a possible help for someone ELSE, instead of needing 
> it myself. WOW.
>
> First, I would agree that removing the neg. cable with the engine running 
> isn't a great idea. While you could probably get away with it for a moment 
> or two, the battery helps to keep the electrical system stabilized. There 
> are many comparisons between how electricity and water act. Here's 
> another: A battery acts kind of like the pulsation dampener in your home's 
> water line, helping to subdue any quick, radical changes in electrical 
> pressure. Without it in the line, it's easier to get a dangerous spike.
>
> Another couple of ideas for trouble shooting: Try measuring the voltage at 
> the alternator itself, at idle, with both your meter leads at the 
> alternator....One on output, the other on the case. If there is any 
> significant difference between this reading and the reading at the 
> battery, you have a wiring issue....corrosion, loose connection somewhere, 
> high resistance. The other thing that works once in a great while is to 
> measure output at the alternator on the AC scale. Any more than a volt or 
> so shows one or more bad diodes inside. Time for a new alternator, if 
> that's the case.
>
> Good luck,
> Bill
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