Also try cleaning the wheel speed sensors in each front wheel. And make sure the throttle linkage is clean and lubricated and has a little play. Bad throttle body has to be the most misdiagnosed, overdiagosed problem ever. In my last five cars I've gotten at least 10 diagnoses, amateur and professional, of a bad throttle body and never once has that actually been the problem. It's a very fashionable diagnosis but you should exhaust all other possibilities first. An awful lot of throttle bodies get replaced at great cost only to have the problem persist.