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RPM's bouncing while coasting

Discussion in '2nd Gen. Tacomas (2005-2015)' started by snowgod06, Jun 15, 2016.

  1. Jun 15, 2016 at 6:39 PM
    #1
    snowgod06

    #1
    snowgod06 [OP] UG legend wannabe

    Joined:
    Apr 26, 2009
    Member:
    #16454
    Messages:
    5,571
    Gender:
    Male
    First Name:
    Rob
    A farm field, OREGON
    Vehicle:
    06 Access Cab
    crap bolted and welded together....
    2006, V6 6=speed, scanned with no codes found.

    While coasting my RPMS will bounce from about 1k to 2k, then back to 1k then 2k again. It will repeat this until im at a stop.

    My assumption was I have a vacuum leak somewhere, havent found a leak to save my life. My next guess is low coolant which is what im going to address here shortly.

    Anyone have any possible ideas or leads to what may be the issue?
     
    snowgod06, Jun 15, 2016
    #1
  2. Jun 15, 2016 at 8:41 PM
    #2
    crashnburn80

    #2
    crashnburn80 Vehicle Design Engineer

    Joined:
    Jun 6, 2015
    Member:
    #156893
    Messages:
    14,772
    Gender:
    Male
    Kirkland, WA
    Vehicle:
    2003 DCSB TRD OR
    On the older truck this could be caused by a faulty MAF. Though admittedly I am not as up to speed on the 2nd gen engine management electronics.
     
    crashnburn80, Jun 15, 2016
    #2

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