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?
01 379 N14 celect+
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Alan50, May 6, 2025.
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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. -
Memory is a little fuzzy, But I seem to remember having to calibrate a new TPS on an N14
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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.
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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.
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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’sOxbow Thanks this.
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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
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Key on, depress pedal 3 times to the floor. If I recall. As others said it's just not reading zero as input.
Big Road Skateboard, Oxbow, Alan50 and 3 others Thank this.
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