Posted by Dan Barnhill on August 20, 2009, 9:47 am
Hey all,
Have an 84 Yamaha Venture. Has this quirk where every so often when
firing up the bike - when the start button is pressed, the power to
the entire bike shuts off. Dash goes blank as if the battery had been
removed.
Popping the leads off the battery and then reconnecting solves the
problem and the bike then starts up fine.
Yesterday, however, power to the entire bike cut out without any
prompting from me while I was full throttle down the highway. Had to
coast onto a thin left shoulder of a busy bridge with cagers climbing
up my tailpipe.
Again, I popped the battery leads, reconnected and was able to start
the bike. Then went 300 more miles on the day without any trouble.
Before I start ripping things apart - does anyone have any ideas as to
what's going on?
Thanks,
DB
Posted by Mark Olson on August 20, 2009, 9:52 am
Dan Barnhill wrote:
> Hey all,
>
> Have an 84 Yamaha Venture. Has this quirk where every so often when
> firing up the bike - when the start button is pressed, the power to
> the entire bike shuts off. Dash goes blank as if the battery had been
> removed.
>
> Popping the leads off the battery and then reconnecting solves the
> problem and the bike then starts up fine.
>
> Yesterday, however, power to the entire bike cut out without any
> prompting from me while I was full throttle down the highway. Had to
> coast onto a thin left shoulder of a busy bridge with cagers climbing
> up my tailpipe.
>
> Again, I popped the battery leads, reconnected and was able to start
> the bike. Then went 300 more miles on the day without any trouble.
>
> Before I start ripping things apart - does anyone have any ideas as to
> what's going on?
Either an intermittent open inside the battery (is it a Yuasa by any
chance?) or a loose cable connection, removing and reconnecting the
leads is irrelevant- the key is you wiggle things around when you R&R
the leads.
Posted by Rob Kleinschmidt on August 20, 2009, 11:39 am
> Dan Barnhill wrote:
> > Hey all,
> > Have an 84 Yamaha Venture. Has this quirk where every so often when
> > firing up the bike - when the start button is pressed, the power to
> > the entire bike shuts off. Dash goes blank as if the battery had been
> > removed.
> > Popping the leads off the battery and then reconnecting solves the
> > problem and the bike then starts up fine.
> > Yesterday, however, power to the entire bike cut out without any
> > prompting from me while I was full throttle down the highway. Had to
> > coast onto a thin left shoulder of a busy bridge with cagers climbing
> > up my tailpipe.
> > Again, I popped the battery leads, reconnected and was able to start
> > the bike. Then went 300 more miles on the day without any trouble.
> > Before I start ripping things apart - does anyone have any ideas as to
> > what's going on?
> Either an intermittent open inside the battery (is it a Yuasa by any
> chance?) or a loose cable connection, removing and reconnecting the
> leads is irrelevant- the key is you wiggle things around when you R&R
> the leads.
Take a look at the other ends of the battery cables.
If they respond well to wiggling at the battery end,
my bet is a loose connection at the other end.
Posted by little man upon the stair on August 20, 2009, 2:26 pm
> Have an 84 Yamaha Venture. Has this quirk where every so often when
> firing up the bike - when the start button is pressed, the power to
> the entire bike shuts off. Dash goes blank as if the battery had been
> removed.
I would troubleshoot the battery buss (1), all the way from where the
buss gets power from the battery, through the main fuse, on through
the ignition key, and back to the ignition buss on the fuse panel.
Sometime the main fuze holder gets hot and oxidized and won't allow
much power through it.
Sometimes the ignition switch gets so hot it melts the solder off the
wires connected to it, and sometimes the switch contacts get all
burned and oxidized inside where you cannot see the problem.
(1) Clue: the battery buss is not yellow, but it's powered by the
battery...
Posted by anonymous on August 21, 2009, 1:05 am
> Hey all,
> Have an 84 Yamaha Venture. Has this quirk where every so often when
> firing up the bike - when the start button is pressed, the power to
> the entire bike shuts off. Dash goes blank as if the battery had been
> removed.
> Popping the leads off the battery and then reconnecting solves the
> problem and the bike then starts up fine.
> Yesterday, however, power to the entire bike cut out without any
> prompting from me while I was full throttle down the highway. Had to
> coast onto a thin left shoulder of a busy bridge with cagers climbing
> up my tailpipe.
> Again, I popped the battery leads, reconnected and was able to start
> the bike. Then went 300 more miles on the day without any trouble.
> Before I start ripping things apart - does anyone have any ideas as to
> what's going on?
> Thanks,
> DB
Whatever is the problem, don't ride the bike until it's been
correctly fixed. Your highway experience was a warning.
Don't wind up in the morgue.
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>
> Have an 84 Yamaha Venture. Has this quirk where every so often when
> firing up the bike - when the start button is pressed, the power to
> the entire bike shuts off. Dash goes blank as if the battery had been
> removed.
>
> Popping the leads off the battery and then reconnecting solves the
> problem and the bike then starts up fine.
>
> Yesterday, however, power to the entire bike cut out without any
> prompting from me while I was full throttle down the highway. Had to
> coast onto a thin left shoulder of a busy bridge with cagers climbing
> up my tailpipe.
>
> Again, I popped the battery leads, reconnected and was able to start
> the bike. Then went 300 more miles on the day without any trouble.
>
> Before I start ripping things apart - does anyone have any ideas as to
> what's going on?