Triumphrat

Natron037

I just broke out my 02 TT600 yesterday and have had some wierd happenings. First of all the battery was almost dead, granted it did sit all winter in a garage that isn't heated, but I did put it on a 2 amp charge for about 2 hours and it started fine. I then took it on a 20 min ride after I let it heat up for about 10 min, then later took it home which is about a 35 min ride. Halfway through the ride home I stopped to run into a place and left it running. I heard it shut off and heard the fan run for about another 10 sec. I went out and the temp was at 104c (when my fan kicks on) It started right back up and I rode it home. Today I had to run an errand for work and on the way back I was just about to pull out from a stoplight and it did it again, A motorcycle shutting off in an intersection is not fun! It would always drop the RPM a little when the fan kicked on last year but never shut off. The short of it is.. Is it the battery.. is it the fan getting old.. is it the charging system..has anyone else experienced this and what did they do to fix it? The bike has less than 3000 miles on it, not much is worn out on it. Any help would be appreciated! Thanks
Nathan

themaster

My guess would be the battery. If the fan is taking too much power the ECU won't have enough to work its magic and the whole thing will die. But ... I ain't no mechanic - just picking up on things others have written so you might want to wait for a second opinion.

You might try riding with the lights off too and see if that makes any difference.

Will

He cannot do that if it is a US model. The lights are hardwired. I expect a battery problem as well, but you could also check faulty connections to the alternator.

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Will
It's a squid thing. You wouldn't understand.

Diego

Agreed, the battery is the most likely culprit. One that is been allowed to go almost completely dead will build up sulfation on the plates, and thus have a high internal resistance, even if it appears to take a charge. In addition, if it had any age on it before being allowed to sit, that will compound the problem.

The increased internal resistance means a sudden current drain, such as the fan switching on, will cause a more serious dip in voltage than would happen with a fresh battery possessing low internal resistance. At or near idle, the alternator won't be putting out enough power to make up the difference.

In practice, the ECU can function with quite a low voltage...but the fuel pump and injectors can't, and I expect the ignitor modules don't produce a lot of spark either. Result: engine stops.

Check connections at the battery terminals and the other connectors as Will suggests, but the odds are high that you will end up needing to replace the battery anyway. Have the charging system checked when you do that, just to be on the safe side. Good luck!

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John

Natron037

Last night the fan came on twice, first time it stayed running second time it died. I also noticed at an idle the dash illumination was flickering a little with the unsteady idle. I could only notice this at night and if I reved it up to 2000 rpm it went solid. Now I'd imagine at idle the charging system is doing almost nothing, but the battery should buffer and make the lights stay solid. I'm starting to think it is the battery too. My bike idles at 1200 and about 1000 with the fan on, is that about right? The battery is probably the original, so I'd guess it's about due. Thanks for the help guys!
Nathan

rustbucket

This may or may not apply, but earlier this year I had the same problem with my car. I replaced the battery and shortly thereafter the alternator died. It turned out the electric motor that ran the fans was shot, and it was drawing so my current that it blew the alternator, and was also the culprit for the dead battery (from the fans running after the engine was turned off).

I'm not saying that's what's going on, but just something to be aware of...

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kubbie

usually when the lights pulse w/ the throttle the battery ispretty much toast.

get a new battery, and while your tinkering around double check the connector coming out of the stator (mine melted, and left me stranded one day)

good luck

kubbie

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kubbie
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