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She done died...

gatdammit

gatdammit

Joined Mar 2013
3K Posts | 161+
Naples, IT
Stradista's,

Bike died during a u-turn, won't crank. CEL and "ERRORS" come on with key and flash when I thumb the starter - nothing mechanical happens, however. Was on my to the gas station and it was bone dry when I checked it. Had the battery disconnected this weekend when I did some work and hoped that the ECU miffed the Trip Fuel calculation (I wasn't near my normal limit). No dice. Disconnected battery roadside and that didn't help. Battery was reading 12.7 volts.

Put a header on, checked the O2's, reset the RB map and some other minor things this weekend. Bike ran exactly as it did before until it died. I did have a standing CEL w/ "ERRORS". A couple weeks ago, the CEL started coming on as soon as I thumbed the starter, instead of around 130 F previously. This is why I thought I was having O2 issues and not something more serious...plus she ran strong.

Fortunately, I'm about 500 miles from 30,000 KM service. Nothing was cracked and it wasn't puking fluids. No funny smells. It died like it ran out of gas and I was on an incline. Is there a priming procedure I'm not aware of?

I only had to push her like 200 yards to safe parking so wasn't super pissed. My starter is only 6 months old and cranks very strong.

Start tossing those ideas!
 
This might sound stupid but I've had an issue with my bike dying when I part it and lock the steering head (really), something must be shorting because I need to replace my 30A fuses when it does, U-turn is like locking the head (if going left), my bike was stone dead, IF you can crank it, it's not this, I no longer lock my steering head when parked it hasn't done it since...
 
Wow, crazy. I never lock mine but was going to start after reading some bike theft articles. I mean, I did go full lock left on the turn...I'm checking fuses and basic **** this morning. I did fiddle with the side stand switch roadside. The blinking CEL/ ERRORS leads me to believe this is something worse.
 
check the fuses, check the wiring at the headstock, remove a plug to see if its wet and see if there is a spark, does the fuel pump prime.
 
Found a blown 10A in the frame fuse box; slot #4. The starter is working now but it won't turn over. The battery was showing around 12.4 V, so I put it on the charger. It felt strong at first so I fear this won't be the ultimate fix.

Can't say I've ever heard the pump priming. I don't have the flapper servo anymore so should be able to hear it. I haven't noticed it in the past. When it died, I didn't get any precursor misfires like when you normally run out of gas. It was running like a ***** ape, did a u-turn, dead.

Next stop will be plugs and spark if it doesn't fire with the full battery.
 
If anyone has run out of gas, please share your experience. I never have so don't know if it needs a lot of kicks to prime or what.
 
Fuse four (front) fuse box feeds both the horizontal and vertical lambda sensors.
It gets its feed from the main relay, which is energised from the immobiliser.

If the fuse blows again, disconnect the lambda sensors.

I know a poor battery can cause all sorts of problems on modern motors, cars and bikes, not saying that's what it is on yours!
 
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Very interesting. I've been suspecting lambda sensor issues for a while now - lots of backfires on decel, slightly ruff feeling, CEL was tripping at 130 F. About 2 weeks ago, it started popping when I thumbed the starter. I inspected both lambda's when I installed the header this weekend and the forward ECU-O2 plug had some corrosion on one of the pins. Cleaned it with sensor cleaner and a brush. No change. I swapped the RB to auto adaptive and checked the O2 cancel feature was active, too.

That would be super cool if it's just a low battery...
 
gatdammit said:
If anyone has run out of gas, please share your experience. I never have so don't know if it needs a lot of kicks to prime or what.
Click to expand...

ran out of gas 2 times with my 939 and after refill did not do anything than press starter and it awaked in 2 seconds to life
 
Further to my last post, fuse four is also a signal wire for the starter solenoid, which is why your starter wouldn't turn, the starter circuit is protected via a 30amp fuse inside the solenoid.

There is a control unit body connector (47 on the electrical drawing) pin 69 R/BK wire that goes from the control unit to the starter solenoid.
(Red with black trace) same wire on the lambda sensors.

Might be worth checking this connector for water ingress/corrosion or just poor connection.

I've been trying to find out what AB_AVVIA relates too?? i've no idea, but the rest of the wires are signal wires for starting the bike, can high and low wires,
Clutch switch, side stand switch, fuel pressure, oil pressure etc.
I'd deffo look at this connector, It will be the smaller of the two going to the main bike ecu

Hope this helps

Mentalist
 

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Thanks, Bro. Everything helps at this point. My starter is only about 6 months old and the leads going to the unit were cleaned. Haven't touched the ECU side but I feel there's some sensing/ sending issue as I can feel it's running just a little rough. Alas, I ride it like it's stolen every day (that it's actually running) and it needs a valve/ cam job. I'm not sure what a desmo bike needing a valve job feels like.
 
Dammit, I rag the arse of my bike every ride, do trackdays with it. its done 25k miles so far, valves were in spec at 18k so next big one at 36 they will be checked again.

Right this AB_AVVIA has been bugging the life out of me, so translated the Italian for it.

Its a start signal, initiate, start up, switch on.

So were in the right area what I have covered.Question is why? the fuse blew that will more than likely be the culprit or a broken wire on that circuit.
Fingers x'd its not the ecu
 
She Lives!

Cleaned all the leads, slapped the charged battery in, and she fired right up. Still have the previous CEL/ ERRORS after it turns over but, it runs fine. That #4 fuse blowing must have clipped her vagi-cles. It must have been that crazy full lock u-turn like Bown mentioned.

Plug a bunch of 10A fuses in those spare slots, fellas...
 
Nice one, glad its running ok. Id be turning the steering lock to lock trying to replicate the fault so you can get it fixed. Dont want it cutting out mid corner. Unless it was a bad connection and youve fixed it cleaning the leads. Get it plugged into a ducati diagnostics laptop. Half hour labour charge to see what the cel code is. Lamda sensor main suspect
 
Yup. She's 500 miles from 18K mile service. I burn 150 miles a week. I just have to contend with Ver Augusto, which is Italian for: "we kinda don't work in August". A double crime as it's the best time to drive here. The traffic was so light last year I turned an average 18 minute ride into 10.

Fotoguzzi has me freaking out about the belts. Alessandra just turned 6 and it would be par to have a belt snap after all the **** I've been dealing with.
 
I don't want to freak anyone out and I'm by far no expert, my guy just pointed out they showed wear. On the outside there was printing that totally wore the lettering off.





 
If something caused a fuse to blow during a full lock turn you may have a short in the harness. Mine shorted out right where the harness attaches the frame. It's ziptied from the factory and that causes sharp bends in the harness that cause problems over time.
 

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