From: M35products@aol.com
Date: Wed Feb 06 2002 - 07:27:14 PST
In a message dated 2/6/2002 1:05:16 AM Eastern Standard Time,
aussierob@odyssey.net writes:
<<
It seems, that the low voltage and current somehow "found" its way back to
the firewall and the Neg of the battery.
So, the following is a somewhat educated guess !
For the Ignition circuit, the current return, at first, passed through the
distributor case into the engine block, then into the engine bearings and
crank, then the flywheel & spigot bearing, through the transmission input
shaft, then out the back of the tranny splines, through into the drive
shaft and U Joints, into the rear axles & out through the axle ball
bearings, then into the axle housing, into U-bolts, the springs and
shackles, into rear sub-frame and body metal and through the body back to
the firewall Neg. strap !!!
>>
Amazing that one other person had the same thing happen!!!
I had a 1974 Porsche 914. The engine-to-frame ground strap corroded through.
When cranking, the torque of the engine against the mounts was enough to
shift the strap and make a connection. When idling, if you could call it
that, there was an intermittent flow of current back through the ground
strap.
Eventually, the clutch cable melted. I couldn't understand why, until I
discovered that it was the return path for the headlight current. I had
fitted a bunch of extra high-amperage driving lights. It acted like a fuse,
and finally melted through. Weird.
apb
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