EVE of Destruction (1991)
Hello mate ... yep I do know the one you mean ... it's this one:
IMDB:
http://www.imdb.com/title/tt0101831/
PLOT:
Eve is a robot, modelled on "her" creator. Eve's armoury includes a nuclear bomb, which for unexplained reasons is on-board during Eve's testing. When things go wrong during the tests, Eve is lost in the big city. Enter the rescue team, which includes the real (human) Eve. They must find and disarm her before she goes "bang". Eve is programmed to protect herself at all costs, so when she runs into a problem, she resorts to her super strength; hence the destruction.
Trying to find it myself ... good movie ... had this on VHS for ages ... never got it on DVD though ... God I'm pi$$ed off I gave all my VHS tapes away ...