hay people ,heres my problem when im driving my 1992 eb2 v8 fairmont and i put my foot down all of a sudden the power is lost but if you back of the throttle a bit it comes back,its mainly noticable on hills or when overtaking it really sucks!

the car used to be an automatic and it has a chip in the ecu to suit the change.
maby its thinking about kicking down when i put my foot down ?
any idears would be helpfull,might have to put a carb on it if i cant sort this

possilbly a TPS issue?

fuel pump.

ive checked the voltage on the tps and its fine,it has a twin tps setup with one ontop of the other could one of them be for kicking down ect?
.ill try get ahold of my mates spear fuel pump and see what happins