Autobox - jumping?

[S1RS]

In the last few days I have found that when accelerating medium hard the auto box is kind of jumping, like its about to change down but doesnt quite get there. Is this terminal or will a change of fluid help? Where do you top up fluid?

[Niles]

top it up through the gearbox dip stick tube. Flushing the fluid may help your problem. Other than that I dont know mate.

[Terminator]

Personally, I would do a complete ATF change rather than just top up the old fluid which has most likely degraded. Use a good quality Dexron III spec ATF and as has been said fill via the ATF dipstick tube.