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Blowing fuses

T

Turtleman

Tuned and Synch'ed
Joined
Aug 1, 2009
Messages
27
Anybody had any problems with blowing fuses?

Its a 15 amp fuse in the relay box in the front fairing.

In some of the 2008 Stelvios you had to remove a relay (this was issuesd as a technical note by MG) which could cause the starter motors to be continuously powered and cause a short circuit, this relay was removed, but the sometimes the power still stays on to the starter motor. So far not sure what causing the fuse to blow (2 have blown now).

Any ideas ?

Turtleman
 
Not the same fuse, but I had a nasty problem with one of the main underseat fuses blowing repeatedly. Took some investigating but it finally came down to a bad fog light relay. I swapped the factory relay out and haven't had any problems since.
 
Are you saying that the starter sometimes keeps spinning?
If so you need to fix that.

If you mean everything is normal, but out occasionally pops a fuse, when does it pop? When you try to start the bike?
What fuse? If it is the starter fuse, the solenoid may be sticking.
 
Hi Wayne,

Good questions ! What happens is that it occasionally pops a fuse, this seems to be the 15 amp fuse for the "ignition" or "services" not sure which from the wiring diagram (need to check again - but while seated on the bike its the first fuse on the left hand side next to the relays - note this bike has the relays towards the front of the bike with the fuses forward closer to the rider (some are different - my mates is the other way round). The fuse blows when I jab the the starter button. When the fuse has blown the glove box won't open and no neutra light shows so I think this is the "services" fuse.

The starter motor spining seems to be be caused by the starter "switch" which I now noticed sticks on ever so slightly, I took the switch apart last night and the ball bearing in the switch seems to stick occasionally and ever so sightly sometimes. So this may be a separate problem to fuse that blows / or I suppose it could also be causing the fuse to pop if the startmotor is damaged or solenoid is sticking?
 
If the starter solenoid sticks, that will blow a fuse.


Here is a possibility:
The Norge and Breva have a starting issue, looking at the Stelvio schematic, it is the same garbage.

+12 leaves the battery, goes through a 30 amp fuse near the battery, goes forward to the ignition switch. Then to a 15 amp fuse, back to the ignition switch, to the start relay, then to the starter.

On the Norge and Breva with the fuses under the back seat, there is a LOT of wiring, connectors, two fuses, and two passes through the ignition switch. It can fail to pull the starter solenoid. This leaves you with a no start, or a blown fuse. (a solenoid that does not pull draws a lot more power then a solenoid that has pulled)

The Stelvio wiring is just as goofy, BUT, the wire to and from and too and from the ignition switch is a much shorter path, so less likely to be an issue.

If this is it, cleaning the ignition switch contacts with a deoxidizer may help a lot.
 
Doesn’t seem to be the switch as that is now working very well.

The fuse that blows is the F2 15amp which according to the manual and wiring diagram points to the starter motor solenoid (or it could be relay I suppose).

Any particular issues to check on the starter motor/solenoid ?
 
Fixed the problem

Seems to have been a combination of a poor earth, the earth behind the starter motor cover was quited badly crroded, I seem to recall this being an issue on other posts, and (of course) the battery terminals were not in the best of shape, but the battery was working well. Suprised it started at all, anyway several fuses later all now fine.
 
WayneOrwig said:
If the starter solenoid sticks, that will blow a fuse.


Here is a possibility:
The Norge and Breva have a starting issue, looking at the Stelvio schematic, it is the same garbage.

+12 leaves the battery, goes through a 30 amp fuse near the battery, goes forward to the ignition switch. Then to a 15 amp fuse, back to the ignition switch, to the start relay, then to the starter.

On the Norge and Breva with the fuses under the back seat, there is a LOT of wiring, connectors, two fuses, and two passes through the ignition switch. It can fail to pull the starter solenoid. This leaves you with a no start, or a blown fuse. (a solenoid that does not pull draws a lot more power then a solenoid that has pulled)

The Stelvio wiring is just as goofy, BUT, the wire to and from and too and from the ignition switch is a much shorter path, so less likely to be an issue.

If this is it, cleaning the ignition switch contacts with a deoxidizer may help a lot.
Click to expand...
2007 Breva 1100, my starter is sticking, I replaced the solenoid. Still sticks the same. No blown fuses. Chould I try to clean the switch?
 
What do you mean by "sticking"? Does the solenoid engage, but starter doesn't spin? If solenoid engages, it isn't the switch or relay. There are posts on the Bendix failing to engage. Have you done a search? Did you bench test the starter before you installed it? Also these starters are prone to failure I had to replace mine a couple years ago.
 
john zibell said:
What do you mean by "sticking"? Does the solenoid engage, but starter doesn't spin? If solenoid engages, it isn't the switch or relay. There are posts on the Bendix failing to engage. Have you done a search? Did you bench test the starter before you installed it? Also these starters are prone to failure I had to replace mine a couple years ago.
Click to expand...
The solenoid engages, the starter works just fine. I push the starter button, it engages, if I let go of the button before the bike starts, the starter does not disengage from the flywheel. It finally disengages and stops cranking after the engine starts. I'm worried that it will hang and not disengage at some point.
 
@TellicoAndrew ...

I am, predictably, of no technical help, but did want to say that if this issue still "sticks" around or a new one surfaces before the weekend after Labor Day, there will be a passel -- I grew up in Kentucky so I can speak a bit of Tennessee :giggle: -- of Guzzisti staying at the Lodge at Tellico as part of the South'n Spine Raid XX. Some of those folks are gurus of Guzzis, so joining us might be helpful and fun.

Anyway, if you did not know of this, you do now. :clap:

You are, as you well know, a fortunate fellow to live in that part of our planet. There are great rides out of my driveway here at the top of Virginia, but they pale in comparison to yours.

Hope you sort out your starting issue.

Bill

P.S. FWIW -- and that is, as noted above, of likely little help here -- an embarrassing number of my starting issues over the years have been when run to ground [NPI! :)] corrosion inside the ignition switches or gummed-up starter buttons. Obviously, YMMV.
 
TellicoAndrew said:
The solenoid engages, the starter works just fine. I push the starter button, it engages, if I let go of the button before the bike starts, the starter does not disengage from the flywheel. It finally disengages and stops cranking after the engine starts. I'm worried that it will hang and not disengage at some point.
Click to expand...
I don't know about the Breva 1100, but that's normal operation for the 2007 Norge 2V and the 2009 Stelvio 4V. Touch the button, and it spins until it starts ....

Lannis
 
Confirming what Lannis says, once you press the start button and then release it on the Breva 1100 the ECU sends volts to the solenoid for 10 seconds, once it starts and goes over 400 RPM the ECU releases the solenoid. I find on mine if it doesn't start after 5 seconds it would blow a fuse so I'm always ready with my thumb by the kill button.
 
TellicoAndrew said:
The solenoid engages, the starter works just fine. I push the starter button, it engages, if I let go of the button before the bike starts, the starter does not disengage from the flywheel. It finally disengages and stops cranking after the engine starts. I'm worried that it will hang and not disengage at some point.
Click to expand...
That is normal operation as Lannis and Kevin stated for the 1100 Breva. My Breva I just press and release the starter button and the ECU takes over. So in other words, your starter isn't sticking. The bike is operating as designed.
 
john zibell said:
That is normal operation as Lannis and Kevin stated for the 1100 Breva. My Breva I just press and release the starter button and the ECU takes over. So in other words, your starter isn't sticking. The bike is operating as designed.
Click to expand...
Good to know. I remember being able to 'bump' the starter in the past, now this. Thank you for the reply! I appreciate you.
 
Kevin.NZ said:
Confirming what Lannis says, once you press the start button and then release it on the Breva 1100 the ECU sends volts to the solenoid for 10 seconds, once it starts and goes over 400 RPM the ECU releases the solenoid. I find on mine if it doesn't start after 5 seconds it would blow a fuse so I'm always ready with my thumb by the kill button.
Click to expand...
Thank you, Kevin!
 
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