Motorcycle Repair: Shadow VT 1100 ignition problem, jim bardwell, wiring circuits


Question
This problem has stumped the service department guys. My 1994 Shadow VT 1100 starts if you have it standing up straight. But if you lean it to the left, toward the kickstand, it immediately dies. You can lean it to the right all you won't and it won't die.
I had the iginition control module replaced 4 months ago after a similar problem occurred. Only then, the bike wouldn't start at all.
I'm lost and so are the Honda service guys.
Can you help.
I've checked all wiring connections, replaced battery, even prayed heavily.
So far, no go.
Thanks in advance for your help.
Jim Bardwell

Answer
Jim, surprised that the shop guys can't discover the cause of this as they have all the info on the things that affect the electronics...

As a vintage bike guy, I don't have all the info on this particular model, however I can venture a few guesses...

I would check all the safety switches connected to the ignition system. Look at the handlebar kill switch and wiring, side stand switch and wiring, neutral switch and any related relays and diodes.

As the bike goes to one side, it usually causes the forks to move as well and some of the wiring from the handlebars could be chafing against the frame during this motion.

If the sidestand return spring is not tight or the switch is loose or malfunctioning then the shift of weight to that side could activate the safety switch as the sidestand swings out in that direction.

Make sure that you don't have a big ring of keys on the ignition switch which causes the switch to wear out and loosen internally.

I would set up some test wires/lights on primary circuits and then tip the bike over towards the right and watch what is happening with either the primary power sources or the ignition side wiring circuits, assuming that this is an electrical malfunction.

Bill Silver