[s-cars] Current draw/dead battery "a short story"

[Jim Furdyn]

I understood your point Tom, I read you 5 X 5. As indicated in the wiring
diagram, that relay from pin 5/87a also feeds (J69) After-run coolant fan
control relay at 4/86 and pulls the relay closed to feed V7 (Coolant Fan) to
start spinning. V7 is only protected with a 25 Amp fuse (S 19)

J69 location is on Aux Relay Panel I (under hood)
F98 location is on the coolant manifold, forward position, 2-pin
J155 location is on the Aux Relay Panel III, position 5
S61 location is on the Aux Relay Panel III, position 8, 12 Amp C/B (Blue)

Jim

-----Original Message-----
From: Tom Green [mailto:trgreen at comcast.net] 
Sent: Thursday, December 27, 2007 4:43 PM
To: Jim Furdyn
Cc: 's-car-list'
Subject: Re: [s-cars] Current draw/dead battery "a short story"

My point on the after run circuit is that the fan runs as well as the  
little coolant
pump you might not hear.  The fan is what depletes the battery in  
short order
when this circuit stays on, and can even catch on fire, so you don't  
want to mess
with a suspect relay.  Unfortunately, there are so many other places  
for the current
to leak.

When you celebrate success in this endeavor,  I recommend a bottle of  
"Jarhead
Red" from Firestone vineyards in Los Olivios, Ca, a product of Adam  
Firestone,
Capt, USMC, 84-91, proceeds to the Marine Corps foundation.

Tom

On Dec 27, 2007, at 4:15 PM, Jim Furdyn wrote:

> Thanks for info Tom and I appreciate your recommendations. I have  
> checked
> the voltage at the alternator and at the battery for comparison,  
> they were
> less than a half a volt difference and this was one of the first  
> things I
> checked. All connectors at the alternator and starter were secure  
> and in
> good condition. Since this relay is not the mechanical type that  
> you can
> actually hear open and closing, this was not easy to spot. As  
> previously
> stated in an earlier post, I unplugged the aux coolant pump and  
> waited until
> the next day. The battery still went to less than 10 volts. I then  
> started
> to dig deeper into that circuit and found the smelly coolant pump  
> relay.
> This does not mean that I still do not have a possible bad TC temp  
> sensor
> feeding the relay a false signal and the relay staying closed  
> therefore
> draining most of the battery voltage. I have the TC temp sensor  
> coming and
> will install that first. This aux coolant relay smells fried but  
> looks good.
> I don't have to be a rocket scientist to say that I no longer trust  
> its
> functionality so I will be replacing this as well. None of this is any
> guarantee that this problem is cured. If this does hold a charge  
> over my
> upcoming long weekend, I'll call it good at that point.
>
> Jim
> USMC (1989-1992)
> Floyd, Semper Fi brother!
>