Volvo vnl cruise control not working

Discussion in 'Volvo Forum' started by goranvolvo, Mar 7, 2013.

  1. goranvolvo

    goranvolvo Bobtail Member

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    Mar 2, 2013
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    yes i can rise rpm up down no codes i do have dealer tech tool with laptop so i did road test and no problems shown .
     
    Sancastrese Thanks this.
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  3. bravoo67

    bravoo67 Light Load Member

    248
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    Mar 15, 2012
    Brooklyn NY
    0
    my friend has a volvo with volvo D12 and was explaining it to me since I have exactly the same problem but I never got it to work really..

    so what he said was :
    before moving the truck and after releasing both brakes he presses the brake pedal all the way down, up to some pressure point on the gauges..

    only after that hes able to engage cruise control while on the road

    It never worked for me though :/


    hope it helps

    good luck!!
     
  4. Pablo-UA

    Pablo-UA Road Train Member

    7,604
    1,632
    Oct 11, 2010
    Borispol, Ukraine
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    do not look for cruise problem in engine ECU. After 1998 Volvo use VECU to controll engine (not with N14 and early Series 60). So no difference what engine you have, all switches in cab are connected to VECU
     
  5. Tam_Tam

    Tam_Tam Light Load Member

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    Mar 19, 2012
    Edmonton, Alberta
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    Before we sold it our VNL (2006 EGR only D16) was "hunting". It would jump and drop about 50 RPM everytime we used the cruise, rapidly over and over.

    It was the engine computer. To completely fix this we needed a new ECM.
     
  6. ah fai

    ah fai Light Load Member

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    Aug 21, 2012
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    Hello, i am facing same problem with 2 of my FM12 truck , i think i will try to replace a good working condition VECU tomorrow and see....
     
  7. goranvolvo

    goranvolvo Bobtail Member

    19
    4
    Mar 2, 2013
    0
    It is working now I was testing every wire and sensor took the truck for test drive and it is working now

    So
    Check switch on brake and clutch pedal there is also air switch connected to the cruise it is on the left side off the clutch pedal pull the plastic panel off you will se it on the right top, check speed sensor
     
    gregor Thanks this.
  8. ah fai

    ah fai Light Load Member

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    Aug 21, 2012
    0
    Funny thing, cruise control working only when the truck reverse, stop work in forward...
     
  9. gregor

    gregor Light Load Member

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    May 13, 2011
    chicago,il
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    i had that thing too, i solved this by replaced the V shape spring which holds clutch pedal in top position, you need to remove plastic panel on the left side to the steering column, spring costed me 8.67$ ,plus mechanic adjust a bit little bolt in service brake valve ( under hood on firewall ) ,thats it !! problem solved, try this it might help
     
  10. ah fai

    ah fai Light Load Member

    178
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    Aug 21, 2012
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  11. Danisuba19

    Danisuba19 Bobtail Member

    38
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    Jan 11, 2013
    Chicago il
    0
    So what exactly did u do to make it work? I have the same problem, I would appreciate the help.
     
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