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Thread: RPM Surge And Idling Issues?

  1. #1
    Potential Tuner
    Join Date
    Jun 2016
    Location
    Raleigh,NC
    Posts
    1

    RPM Surge And Idling Issues?

    What can cause this RPM Surge and Idling issues? I was just cruising along then suddenly the RPM shot to the roof of 2500 rpm out of blue.When i apply the brake, the RPM would drop down to 1500 RPM and idling was a high revving sound.This all happen in traffic.

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
    Posts
    13,533
    Massive vacuum leak?

    Hard to say really, I don't have the vehicle in front of me.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.