01 379 N14 celect+

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Alan50, May 6, 2025.

  1. Alan50

    Alan50 Bobtail Member

    11
    6
    Sep 29, 2021
    0
    Hope someone can tell me if they know why when I replace my TPS sensor i have no Jake’s! I put the old sensor back on and bam. Jake’s will work again but, idles rough and loses power. I put the new sensor and truck pulls like I’ve never felt before. I mean seriously I probably been running it in limp mode since I’ve owned it. I just have no Jake’s on all 3 stages. Cruise control works fine and idles beautifully. Also all my gauges are reading fine but old tps= Jake’s will come on, oil temp surges. New sensor= reading 180-200 oil temp, steady idle, No Jake’s. I’m bamboozled at this point. Anybody had a similar problem?
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  3. Big Road Skateboard

    Big Road Skateboard Road Train Member

    5,891
    31,458
    May 2, 2021
    0
    TPS counts are probably not at zero, or throttle % not at zero, with the new sensor.

    Basically the ECM is seeing it as your foot is still on the throttle.

    Is it the correct part#?
     
    AModelCat, Oxbow and blairandgretchen Thank this.
  4. Star Rider

    Star Rider Road Train Member

    1,365
    11,084
    Sep 23, 2019
    Michigan
    0
    Memory is a little fuzzy, But I seem to remember having to calibrate a new TPS on an N14
     
    lester, Oxbow, IH9300SBA and 2 others Thank this.
  5. Big Road Skateboard

    Big Road Skateboard Road Train Member

    5,891
    31,458
    May 2, 2021
    0
    That would make sense. I don't know for certain I've ever had to replace one on a truck with Cummins or Cat.
     
    Oxbow Thanks this.
  6. blairandgretchen

    blairandgretchen Road Train Member

    13,305
    71,204
    Dec 9, 2011
    South west Missouri
    0
    Makes sense - and you could plug in a cheap Scan guage D , scroll to TPS, and see what % it reads with pedal up.
     
    Oxbow and Big Road Skateboard Thank this.
  7. Alan50

    Alan50 Bobtail Member

    11
    6
    Sep 29, 2021
    0
     
    Oxbow Thanks this.
  8. Alan50

    Alan50 Bobtail Member

    11
    6
    Sep 29, 2021
    0
    I forgot to mention my pedal is broken in half as well I don’t know if that would make a difference but it worked fine on the last TPS sensor but it idles rough and has no power. Not the way this one has. It’s just annoying not having Jake’s
     
    Oxbow Thanks this.
  9. Alan50

    Alan50 Bobtail Member

    11
    6
    Sep 29, 2021
    0
    It idles and responds fine though I just have no Jake’s I mean I’m pulling 85k to 90k up hill and still picking up speed. It sounds like a well oiled machine. I looked at schematic and it’s wired right im just lost at this point
     
  10. jamespmack

    jamespmack Road Train Member

    19,918
    214,810
    Mar 25, 2014
    OH
    0
    Key on, depress pedal 3 times to the floor. If I recall. As others said it's just not reading zero as input.
     
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

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