2003 Honda S2000 Q&A
2003 Honda S2000 Question: Shifting problem
Clutch operation? Have it inspected for wear... - DaveJHM
Moisture in the shifter housing can cause difficulty in selecting reverse or fifth gear. Removing cleaning and lubricating the shift lever will repair this problem.
The MAP sensor contacts can shift at high RPM causing a hesitation. Replacing the MAP sensor will repair the problem.