ZD30 with auto trans. Gear shift trouble

[dagwill]

Lately i have been having gear shift troubles [ intermitant ] When the revs build and it should shift, it begins to shift, revs drop a little then it feels like its gone into limp mode, i can flatten it and no great response. Then if i take my foot off it completes the change, put my foot back down and it goes like normal. any ideas please.
Thanks David

 

[tweak'e]

what vehicle? patrol, terrano ??
auto d22's are pretty rare especially with zd30.

 

[dagwill]

2003 GU patrol