Join Date: May 2002
Location: punta gorda fl usa
89 350 firebird automatic .ever since i bought this car i have had this condition. from time to time, especially in the morning at highway speeds, the rpm's will fluctuate between 1700 and 2000 rpm's . it only seems to do it when on the highway at higher speeds(70-75) any ideas what is causing this, and how to fix (other than a engine swap). thanks ahead of time.