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18 SCrew 2.7 xlt accelerates on its own

 
Old 07-07-2018, 06:42 PM
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Default 18 SCrew 2.7 xlt accelerates on its own

So me and my wife have both noticed when we let off the gas the truck will start accelerating by itself sometimes alot maybe 5mph which is alot when your coasting to a stop. It doesnt happen all the time but I was wondering if anyone has experience with this? I thought maybe the turbos are still spooled but it will do it at stop sign to stop sign once I get my cluster I can see if its boost or what but with the throttle closed the bypass should be activated and all boost is dumped into the intercooler or wherever it goes. My truck is all stock besides a factory trailer brake controller and hill descent control.
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Old 07-07-2018, 07:09 PM
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Mine does it sometimes when up shifting from 1st to 3rd with my foot off the pedal.
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Old 07-07-2018, 07:25 PM
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Does it do it all the time or intermittently?
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Old 07-08-2018, 06:50 AM
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Mine does it randomly. When shifting from park, sometimes it takes off like I'm at ~20% throttle. And like swampvol, on occasion it does it when up-shifting.
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Old 07-08-2018, 12:07 PM
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Mine will lunge forward when I left off the brake but this isnt torque converter just pushing me rpms come up like its giving itself more fuel
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Old 07-08-2018, 12:59 PM
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I've noticed it too, almost seems a bit worse in Sport mode. I think it's just some transmission rev-matching logic.
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Old 07-08-2018, 01:05 PM
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Its gonna end up causing an accident it accelerates fairly hard like 5mph sometimes unless you lay on the whoa pedal. Do any of you have a 6 speed or is this a 10 speed 2.7 issue?
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Old 07-08-2018, 03:40 PM
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Mine's certainly not that bad. I'd start by documenting the issue (do you see it on the speedo/tach? If so, get video) then taking it to the dealer. It may be a firmware bug, and updating everything may solve the problem.
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Old 07-08-2018, 03:46 PM
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Yea u can see engine rpm's jump and speedo move.
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Old 07-09-2018, 12:34 PM
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Yes, mine does this too.
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