I have a brand new S4R Testastretta.  I'm still breaking it in.  It has like 250 miles on it.  I've been varying the load on the engine, varying the gears and RPM's.  staying below 6K, and mostly keeping it between 4 and 5K.

My bike has died a few time for no reason.  Today while setting at a stop light after putting like 80 miles on it, it dies.  The Temp said it was 218 so it wasn't cold.      It hasn't happened much, maybe 3 or 4 times  but it just seem like it shouldn't be happening at all.  It always start right back up.

Also when do the fans on the Radiator come on?

This is my first Duc, so I don't really know whats is and isn't normal.

The engines are pretty tight to begin with, so they are more prone to dying.

What's your idle running when the engine's up to temp?
If it's below 1100 or so, it'll be prone to dying.

Fans are spec'd to come on at 217 degF, so you've likely gotten it close.
The fans are very quiet and don't move much air, so unless you *look* at 'em, it's unlikely that you'll notice when they come on.

My S4 is a lot happier below 200 degF, above that it's a bit finicky.

1500 miles on my S4Rs.  Dies occassionally too at idle or just off idle.  Usually just a little cough then silence. Even after so many years it still makes me feel like a noobie when it happens just as I start slipping the clutch.  Makes me glad for the times it does it when just idling.

FWIW my Buell did the same thing.  Little cough then nothing.  I'm interested in the response this ? gets.

At least you're not alone.......

'07 S2R 1000. Full Termi including ECU.

Never died.  Not once. 

Don't know if that helps or hurts 

Just want to clarify...

Clickjack, you have a regular S4R, not S4Rs or S4Rt, right?

S4Rs and S4Rt are different critters, as they have an idle air servo run by the ECU.

S4R is old-school style.

I have never had mine die at idle, but it dies when downshifting.  Maybe 6 times in the last 1200 miles.  There is a little backfire (not the usual popping at decel) and then nothing.  It always starts right back up, but very unnerving when getting ready to take a turn.

05 S2R stock everything.  5500mi.  Starts and runs perfectly. Idles fine 99.9% of the time.    Mine dies in two scenarios:

1.  I'm sitting at a stoplight, at idle, clutch in....'click' sound, then instantly...dies.  Starts right back up again. 

2.  Downshifting, gets to about idle speed...'click' sound, dies.   Starts right back up again. 

I took my kickstand kill switch off and cleaned it thinking maybe that was the culprit.  Nope.

Happened two times during an hour ride on Sunday.  Hasn't happened for a while before that.

Quote from: Speeddog on September 16, 2008, 07:14:19 PM
Just want to clarify...

Clickjack, you have a regular S4R, not S4Rs or S4Rt, right?

It's an 07 S4R Testastretta.  Is that what you meant by S4Rt?

Quote from: Clickjack on September 16, 2008, 08:26:50 PM
It's an 07 S4R Testastretta.  Is that what you meant by S4Rt?

Yes.

Idle speed is controlled by the ECU, with it adjusting how far 'open' the idle air valve is.

I'm not aware of how that can be altered.
It'll likely improve as the engine gets some miles on it and loosens up a bit.
Whether it'll be enough, though....

So this isn't anything I should be worried about?

Hehe, I was about to start this topic. Am I glad I'm not the only one with this problem, sorry

I have a 696 and the last two night have been around 65 degree F. It never experience this low temperature since I got it. Both nights it died on the first try but started back up just fine. I did fully turn on the fast idle lever prior to starting it. 

It also once died when I down shift from 2 to 1 approaching a stop light in 80 degree F; started up just fine.

I'm sure I dont have the coil issue as I checked it myself.

I am easily paranoid when it comes to my ride.

Sucks to hear this happens to quite a few here

My S4Rs died quite often.  I thought I'd made a mistake buying it.  Then I bought the DP ECU about 1 1/2 years ago and it hasn't died a single time since.

Unfortunately, I think you're in for a long road with this until you decide to install an exhaust/ecu combo or just the ecu (eeek!). The bikes are SOOOO damn lean for the E3 emissions, it's not even funny. Though mine never died, it hated life at anything above 190 deg if I was trying to manage around town type stuff. When I did the install of my full Termi system and removed the stock pipes, the insides of the pieps and exhaust ports on the heads were pure white!! That's how lean it was running!! 

You'll have a much happier bike (and rider) once you get some fuel in there! 

My bike dies every time I hit the kill switch or pull the key out or have the kickstand down and in gear. Thats about it

2007 S4RS... never "dies".  Open airbox/stock ECU/Termi shorty on udder (for now).