Are you insinuating that the 1979 coup occurred because the Shah was planning on nationalizing Iran's oil business, as P.M. Mosaddegh was doing in the early 50's?
Not at all. Rather, the coup that deposed the shah was a result of the communists and Islamists teaming up to sow discord. Then Jimmy Carter pulled the rug out from under Pahlavi. Of course the mullahs killed off the Tudeh Party.
If oil had anything to do with it the revolution never would have happened.