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Thread: Scan Tool Data Help

  1. #1
    Fuel Injected!
    Join Date
    Apr 2015
    San Francisco Bay Area

    Scan Tool Data Help

    Hello i recently went on a test drive with my motorhome while a snap on verus scan tool was attached. I was wondering if the O2 sensor is supposed to do this jumpy bit. Fast forward to 8:20 as the earlier parts are a wee bit shaky.

    Is the knock sensor supposed to read around 14 - 18?
    This is a 1992 Motorhome with a 454 engine. TBI and 4L80E transmission.

    Thanks for any input.


  2. #2
    Fuel Injected!
    Join Date
    Jul 2012
    Fresno, CA
    The O2 readings are normally like that on a narrow band sensor, so nothing to worry about. That's a fairly low amount of knock counts, so nothing wrong there either.
    1973 K-5 Blazer, TBI 350, TH400, 1 ton axles & 38" SSRs'
    1975 280Z, TBI 350, 700R4
    1953 M-38A1, TBI Buick 231
    1951 Ford Panel, 5.3 with 4L80E

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