Hi Phil
I've got a 1999 ST4 down the road from you here in Raleigh that just contracted the problem you seemed to have suffered.
I was heading the the biker breakfast over in Pittsboro this morning and the bike stalled at a light, then wouldn't start again. I get the sound of the fuel pump starting and it cranks fine, but won't fire up. It's been stalling occasionally in traffic, but was running great at speed and previously would always start again on first press of the starter button.
This was the first day running it in a couple of weeks, so may try adding fuel stabilizer first? Fired right up when cold this morning.
Any suggestions?
Thanks
Steve
--- In st2_owners@yahoogroups.com, "brpduck" <colordoc2@...> wrote:
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> --- In st2_owners@yahoogroups.com, "nate_isu_2000" <nateducst2@> wrote:
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> > Sounds dumb, but I wouldn't discount a bad battery either... or the main relay under the left side fairing, or a bad ground. Just guessing really, only things that come to my mind that could cause all those issues, besides a bad ECU/wire. Good luck to you, let us know what you find!
> >
> > Nate
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> > > When I engage the Kill switch and hit the starter, absolutely nothing happens; no engine turn-over; nuttin'. When I disengage it, it turns over; just no spark nor fuel pump engagement.
> >
> Thanks, Nate- how about, all of the above?!
> I received an ECU from ebay. It had a good return policy, so what-the-heck. It worked. I turned the key and the fuel pump whirred to life. Had spark, too.
> It started! However, I still had the problem of intermittent rough running. This is the same problem I had before my R/R fried and then my ECU died.
> I put my old FBF chip in, and it worked, but no better than the stock one.
>
> Something was stressing my charging system. My voltmeter showed charging, but peaked at around 13.8v, which is OK.
> I decided to replace the battery and clean every ground point, coating w/dielectric grease.
> I also installed the Michael Heth ground cable. I already had the beefier aftermarket ground strap, but figured bigger is better.
> Although I didn't do the change one thing at a time deal, it all worked.
> I went for a test ride naked; the bike, not me. and it finally ran great!
> The voltmeter showed charging up to 14.2v; a small but significant improvement. It showed me that something was different.
> I started the bike again this morning, and it ran and idled great. I'm ready tpo button it up and go for a real ride!
> Thanks again, Nate.
> Maybe we'll ride down there some day and visit. You're welcome to come up here to Hendersonville, NC. We can ride the mountain roads!
> Phil
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