surging rpm

  1. akaNYr

    Sudden RIM surging

    I have a 95 Mustang GT 5.O SN95 that has been random surging RPM's for months. It happens about 20 minutes after I start driving on the highway or streets. The car don't move any faster but will jerk if I'm on the highway & the RPM surges. It surges anywhere from 1000 to 2000 above normal. I...