I have this weird problem similar to the idleing problem that frock is experiencing on his 2002 Ody. however my RPM gauge is very unstable. at times the rpm is normal having the proper amount of rpms given to the throttle. but whenever I seem to go uphill or down hill I get a RPM malfunction. this happens around 20-40 MPH and my RPM jump from its 2500RPM to 4500RPM. I took it in to Honda twice already and they tryed to fix it but I reall doubt they did. What do you think the problem is. It sucks to have a car not being ready to use.