<VV> Electrical question...

[Bryan Blackwell]

Hi Cash,

Not quite right - the alt/fan light comes on if the alternator isn't  
charging sufficiently.  Your 1 to 1 1/2" of slack sounds like too  
much.  I set my belts so I can turn the alternator fan with one  
finger, that seems to work well.  When adjusting the belt, if you  
hold the idler between your thumb and fingers and pull straight back  
that usually results in the correct tension.  A *slightly* loose belt  
is better than a too tight one, but I think you're past the point of  
slightly loose.

If adjusting it fixes the problem, but it gets loose in a few days,  
the belt is breaking internally and needs to be replaced.

--Bryan

On Jan 12, 2009, at 10:47 PM, Cash Case wrote:

> I have a problem with my '65.  As we all know, there are 2 idiot  
> lights one the dash.  One for Alt/Fan and one for Temp/oil  
> pressure.  The Alt/Fan light is orange and lights when the fan belt  
> breaks, if I understand correctly.  The Temp/Oil pressure is red  
> and lights when the oil pressure is low or the temp rises into the  
> danger zone.