Olds 88 acceleration issue

We have a 97 Olds 88, suddenly began sputtering, hesitating while sitting idle but especially with acceleration and takes at least 1-2 miles to get to 45 mph. Took to auto store- code reads Throttle Body censor. Does this sound like the probable cause? Before I dropped $$ into it, thought I'd get another opinion. Someone mentioned the cadilac converter might be an issue...

Welcome to AF, need the exact code to help you, TB sensor is not accurate.