Quote:
Originally Posted by easyg
OK: The solution? Spark plugs!
I had systematically worked back through the fuel system until I isolated the electronics as a problem. Disconnecting the two sensors on the throttle body made the motorcycle run again, connecting them and the stalling came back. I thought it was coincidental that two sensors would stop working at the same time but before I got the voltmeter out to check the visually good wiring loom back to the ECU I wanted to rule out the spark plugs I'd recently replaced. I put the old ones back in (which I always keep just in case) and bingo!
So the NGK Iridium DR8EIX spark plug is the culprit. The old stock D8EA's work just fine.
Now I've just got to make good all the work... exposed wiring loom and bike in bits. I'm just grateful the problem is a $15 part and not a $400 part
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Phhhhhhh. grateful that you have found the answer  
I did not understand the half of that, and I have never even heard of a GS211 (are they really that good?) but I was beginning to wonder what could cause such an issue; the "old" answer of it's either fuel or electrics doesn't quite cut it with modern bikes, as you have demonstrated in this narrative.
The standard fault finding technique of "change one thing at a time and see what difference it makes" pointed to the new spark plugs, or did it take a while to develop???
And, no I would never have thought that brand new spark plugs would cause stalling symptoms.
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Dave
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