2002 Ducati 998 S Bostrom "causes rpm needle jump" Questions

needle began to be jumping up and down! When i began to give throttle it just sat at 0 and not move at all! Now i dont know w hat my rpm's are when shifting gears. What could be the problem. The meter

...rpm`s the engine starts to stutter and dies. If throttle is turned quickly the bike also starts to stutter, can this be the throttle positioning sensor that causes this, if so how can it be tested? ...

rpm the engine stutters and dies. If the throttle is opened fast the engine stutters and dies. Could this maybe be the throttle positioning sensor that causes the problem and if, how can it be tested?

...rpm and read 13.7 V on the multimeter must be enough. I didn't bother to measure the regulator, cause the charging system seems to be working just fine. Took the bike for a spin around the block, ...

...rpm and read 13.7 V on the multimeter must be enough. I didn't bother to measure the regulator, cause the charging system seems to be working just fine. Took the bike for a spin around the block, ...

...rpm and read 13.7 V on the multimeter must be enough. I didn't bother to measure the regulator, cause the charging system seems to be working just fine. Took the bike for a spin around the block, ...

...rpm and read 13.7 V on the multimeter must be enough. I didn't bother to measure the regulator, cause the charging system seems to be working just fine. Took the bike for a spin around the block, ...

...rpm and read 13.7 V on the multimeter must be enough. I didn't bother to measure the regulator, cause the charging system seems to be working just fine. Took the bike for a spin around the block, ...

...rpm and read 13.7 V on the multimeter must be enough. I didn't bother to measure the regulator, cause the charging system seems to be working just fine. Took the bike for a spin around the block, ...

...rpm and read 13.7 V on the multimeter must be enough. I didn't bother to measure the regulator, cause the charging system seems to be working just fine. Took the bike for a spin around the block, ...