does anyone know why this is happening.
It is not connected to midi but even when i create new presets certain perameters self modulate i.e reverb decay
some of the mod sources bpm are also self modulating?
Pretty much any parameter on an Eclipse can be modulated. My guess is that you have some modulation sources connected without knowing it. You could try either a "clear internal memory" UM p.56, or look at each parameter that is being modulated in turn and check its modulation source (see UM p.40-46).