Joined Oct 2015
545 Posts | 0+
Minnesota
Joined Sep 2017
595 Posts | 121+
Lansing Mi
Inconsistent voltage coming from the sensors. Apparently it's a common issue with all Ducati 's. This is said to be what is causing my sputtering and surging while maintaining a steady throttle. I have gone through so much with this bike and this is just about the only thing left. I have read numerous links and posts that point to the TPS, only a few were for the hyper though. New plugs, new eldor coils, new lithium battery, rewire the wiring harness, clean all contact points to every connector, clean O2 sensors(thought #2 was bad but switched it with #1 and the #2 still says it's too rich), verified that the drive by wire throttle tube is operating properly, plus a few other things. Many of the posts I have read, the TPS is something that has a tenancy to wear out and cause my exact issue. Some of the posts said that it happens after having the dealer sync/reset the TPS. I recently had that done and have been having issues ever since.
there are no contacts inside the throttle
i would change the hole throttle grip, which includes everything involved
Joined Sep 2017
595 Posts | 121+
Lansing Mi
The service bulletin was supposedly covered back in 2016 according to the 2 dealers in Michigan(I called them both because I didnt believe them). They replaced the throttle for that bulletin.
Joined Sep 2017
595 Posts | 121+
Lansing Mi
I have a rapidbike module and the rapidbike technicians went in 2 times remotely to try and resolve my issue and it did not fix the problem which is why I have been digging into it deeper.
Joined Mar 2013
3K Posts | 161+
Naples, IT
Mentalist,
By lambda sensor, do you mean the entire 02 sensor unit? If so, which one? I have the exact same issue as OP. Also have RB Evo. I think he isolated his 02's during one test and no change.
Joined Apr 2013
804 Posts | 22+
uk
Hi, my front O2 sensor failed and had to be replaced, prior to that when the throttle was playing up I found that the block connector and terminals for the front sensor where water contaminated and corroded. Note that the rapid bike loom plugs into these sensors. There are resistance checks you can carry out from the connector to see if the sensor has failed.
Joined Apr 2013
804 Posts | 22+
uk
Joined Sep 2017
595 Posts | 121+
Lansing Mi
I disconnected both lambda sensors and turned autotune off and the bike has been running great the past 2 days. The connectors are clean. I think its the sensors themselves. I do have a service light on the dash but I can live with that till I get around to replacing the sensors.
This makes sense. Idle and just off idle FI is closed loop and at that point the system is looking to the sensor for info and not getting it. So the TCU is functioning, bt the cpu isn't getting the info it's looking for based on the TCU position, so it's probably programmed to "guess' which leads to excessive surging.
What's needed to remove the sensor leads? I have rapidbike Evo. Would like to disconnect the sensors but what else do I need to do?
Joined Apr 2013
804 Posts | 22+
uk
Why do you want to disconnect your leads?? do you have a running issue too?
Your rapid bike evo needs the info from these sensors to adapt.
If they are faulty you need to replace the sensors not just remove them.
Joined Apr 2013
804 Posts | 22+
uk
Carry out a resistance test on both sensors, only one might need replacing.
They aren't cheap unless you find a good second hand one, like I did.
Joined Apr 2013
804 Posts | 22+
uk
Carry out a resistance test on both sensors, only one might need replacing.
They aren't cheap unless you find a good second hand one, like I did.
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