FUSE BLOWING

[BOBUP68]

Does anyone know why sometimes when I hit the starter button the fuse blows.Just got gs500f A couple of weeks ago.

[dgyver]

Something is shorting out. Has the bike been wrecked or down?

[BOBUP68]

I believe it was put down once but not to bad by the looks of it .So far it only has done it when it is warm.the motor that is.Could it be something in the starter itself shorting out?

[dchrist]

maybe not something in the starter button itself.... but certainly possible its something in the ignition system shorting out. do you have a manual? I would start by checking all your ground wires on the various switches through the ignition system. this wiring diagram along with the system specific diagrams in the manual were very helpful for me.

http://cgi.stanford.edu/~sanjayd/gs500/Main/USEKModel

I'm assuming you're in the US if not pick your diagram here.

http://cgi.stanford.edu/~sanjayd/gs500/Main/WiringDiagrams

if you follow the red wire from the battery to the fuse you will see that there is nothing but the starter relay between the two... for this reason I suspect that unit is faulty in some way. not sure why temperature effects it but if the issue is intermittent it could just be that a part is in its death throws and only works when it wants to.  If you remove the relay from the bike and take it to a shop they can probably test it for you (free of charge most of the time). or you can test it yourself, looking for continuity with a multimeter (as outlined in the manual) and listening for an audible click from the unit when 12 volts are applied directly.

I suspected the same part in some recent work I did but even though it failed my continuity test the part was good (confirmed by the shop tech). It turned out to be a bad ground in the sidestand switch was shorting the bike out. It wasn't bad enough to blow the fuse I guess but every time I hit the starter switch I'd get a loud pop and all the electircals would die for a few seconds then come back on.... not sure if you're getting something similar.

find a good starting point and test upstream or downstream until you find the culprit...

hope this helps...

good luck

d

[mach1]

quickest way to find a bad relay is to just replace it they dont cost much, or remove the relay and stock a paper clip between the closed side(open  or what ever you call it the side that let juice pass through to the starter)
so jump the two terminal and if the fuse if fine you have the lil bugger but thats a easy quik fix and used in the shops I worked in to make easy money no messing with DVOM's or crap lik ethat.

[BOBUP68]

Thanks guys I'm gonna try tracing all the wires after the fuse and see what I get.Rode yesterday started it like 6 times no problems.WIERD?

[dchrist]

not necessarily too weird. when mine had issues it would start fine sometime and not start at all other times.... just look out for the problem to worsen over time.... if the issue never comes back, count yourself lucky.


d

[BOBUP68]

Well tore it all down,did not find any bad wires .The battery had hardly any fluid in it at all.Would that cause the fuse to blow? I was supprised it even started at all. Has not blown since I filled battery up. Rode to work yesterday and on the way home this morning it was 33 degrees.BURRRR!

[jhutch2115]

I would do a resistance check on the wires because you may have a small cut in the insulation. You should ahve no to very little resistance in your wire, because the purpose of the wire is to allow the flow of electrons and not to prevent them from flowing. The only way I could see that the Bat. could contribute is if it was shorted it out or you had a short in the cells from an accident. Just get your self an inexpensive digital volt meeter select the ohms or resistance operation and check from point to point. Best of luck jim:)