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Volvo gauge cluster vs speed?

Discussion in 'Volvo Forum' started by S M D, Jul 16, 2016.

  1. Jul 16, 2016 #1
    S M D

    S M D Road Train Member

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    So before I waste my time at a Volvo stealership here's the low down .

    Put a new trans into my 06 670 speedo is way off compared to actual speed 74 mph gps actually shows 81 on the cluster. ..


    Sooooo questions

    Would this be a speed sensor issues or would they be able to program it recalibrate by plugging it in.?

    It's annoying because Im either driving too fast or too slow lol.
     
    S M D, Jul 16, 2016
    S M D, Jul 16, 2016
    #1
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  3. Jul 16, 2016 #2
    Trkr3529

    Trkr3529 Light Load Member

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    Was the transmission the exact same model? If it wasn't it could have a different final drive ratio that could put it out.

    I would doubt the speed sensor would do that, usually they either work or they dont
     
    Trkr3529, Jul 16, 2016
    Trkr3529, Jul 16, 2016
    #2
    S M D and flood Thank this.
  4. Jul 16, 2016 #3
    CoyoteExpress

    CoyoteExpress Medium Load Member

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    Tire size ...
    A augocom h8 adapter with software is less then 300usd ink shipping ...
     
    CoyoteExpress, Jul 16, 2016
    CoyoteExpress, Jul 16, 2016
    #3
    S M D Thanks this.
  5. Jul 16, 2016 #4
    nasriza

    nasriza Road Train Member

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    Prob Transmission output shaft teeth are different so it's not calculating proper speed. need some good reprograming by someone that knows what the hell they are doing and you'll be all good .
     
    nasriza, Jul 16, 2016
    nasriza, Jul 16, 2016
    #4
    S M D Thanks this.
  7. Jul 16, 2016 #5
    S M D

    S M D Road Train Member

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    sacramento ca
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    Yup figured, I stopped by at volvo in Cheynee wy and they wasted an hour of my time telling me how it's easy to do it on the cat motor lol. It failed so when I get back to Cali I'll take it to Volvo and see if they can do it
     
    S M D, Jul 16, 2016
    S M D, Jul 16, 2016
    #5
  8. Jul 22, 2016 #6
    benrab

    benrab Medium Load Member

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    Apr 5, 2015
    Quebec ,Canada
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    On a Volvo truck 2006 the information who can affect the speedo is located in the parameter of the VECU they call K-Facto, the VECU share that information with the EECU.

    K-Factor= Turn per mile of rear tire X rear axle ratio X transmission output shaft tone wheel.
    You should do the calculation with a calculator and then program that big number in the VECU parameter with the proper tool.
    Note: Fuller transmission use 16 teeth tone wheel and Volvo I-Shift transmission use 6 teeth tone wheel for the output shaft.
    The accuracy of the Volvo cluster (speedo) is +3 km -0 km
    Ben
     
    benrab, Jul 22, 2016
    benrab, Jul 22, 2016
    #6
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