Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

Rpms go high without acceleration

Discussion in 'Trucks [ Eighteen Wheelers ]' started by DUNE-T, Dec 1, 2015.

Page 1 of 3
  1. Dec 1, 2015 #1
    DUNE-T

    DUNE-T Road Train Member

    6,379
    14,985
    May 10, 2015
    Detroit, MI
    0
    Volvo 770 13 speed with Cummins N14. Driving today and rpm go high without acceleration and then drop down. What can be the problem? I had a shop install a new injector yesterday, but dont know if it can be connected to the problem. The truck ran fine for 300 miles this morning, but then this thing started.
     
    DUNE-T, Dec 1, 2015
    DUNE-T, Dec 1, 2015
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Dec 1, 2015 #2
    AModelCat

    AModelCat Road Train Member

    27,713
    145,177
    Jul 7, 2015
    Canuckistan
    0
    TPS in the pedal maybe?
     
    AModelCat, Dec 1, 2015
    AModelCat, Dec 1, 2015
    #2
  4. Dec 1, 2015 #3
    062

    062 Road Train Member

    5,849
    31,702
    Oct 20, 2013
    0
    Was this on pedal or cruise?
    You sure the clutch isn't starting to slip?
    See any smoke?
     
    062, Dec 1, 2015
    062, Dec 1, 2015
    #3
  5. Dec 1, 2015 #4
    DUNE-T

    DUNE-T Road Train Member

    6,379
    14,985
    May 10, 2015
    Detroit, MI
    0
    Both, pedal and cruise, no smoke. I am not sure about the clutch, never had one going out on me...
     
    DUNE-T, Dec 1, 2015
    DUNE-T, Dec 1, 2015
    #4
  7. Dec 1, 2015 #5
    DUNE-T

    DUNE-T Road Train Member

    6,379
    14,985
    May 10, 2015
    Detroit, MI
    0
    What's TPS?
     
    DUNE-T, Dec 1, 2015
    DUNE-T, Dec 1, 2015
    #5
  8. Dec 1, 2015 #6
    cdub304

    cdub304 Light Load Member

    162
    68
    Dec 7, 2009
    Rockford,IL
    0
    throttle position sensor
     
    cdub304, Dec 1, 2015
    cdub304, Dec 1, 2015
    #6
  9. Dec 1, 2015 #7
    IH Branded

    IH Branded Medium Load Member

    412
    104
    Jun 4, 2013
    Great Lakes area
    0
    Ours did that a few weeks ago. Was scared the trans. was going. It was slipping in and out of gear but we couldn't tell that. It was the air valve that actuates for high range was not holding. Claim colder weather makes them do that. Replaced and good to go. Was scary.
     
    IH Branded, Dec 1, 2015
    IH Branded, Dec 1, 2015
    #7
    blairandgretchen Thanks this.
  10. Dec 1, 2015 #8
    uncleal13

    uncleal13 Road Train Member

    3,756
    6,193
    Apr 9, 2009
    Humboldt, Sk
    0
    If the rpm went up, but the truck did not accelerate, then the clutch was slipping.
    If the rpm gauge went up, bit it didn't sound like the engine changed its tune any, then it may just be the crankshaft sensor.
     
    uncleal13, Dec 1, 2015
    uncleal13, Dec 1, 2015
    #8
    back street slider Thanks this.
  11. Dec 1, 2015 #9
    DUNE-T

    DUNE-T Road Train Member

    6,379
    14,985
    May 10, 2015
    Detroit, MI
    0
    Thanks, I'll check that.
     
    DUNE-T, Dec 1, 2015
    DUNE-T, Dec 1, 2015
    #9
  12. Dec 1, 2015 #10
    boneebone

    boneebone Road Train Member

    2,232
    2,266
    Mar 13, 2009
    0
    It's called a Accelerator Position Sensor, which could be bad and/ or the Accelerator Pedal itself, which with use and age starts getting worn and gets play in it, so the Sensor doesn't read that it has returned to the 0 position. That's why there is a delay in your throttle response.

    If you buy a new Pedal the APS (Accelerator Position Sensor is included too.
     
    boneebone, Dec 1, 2015
    boneebone, Dec 1, 2015
    #10
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

    • Page 1 of 3