Weird miss with tuner - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 18 (permalink) Old 02-18-2014, 02:29 AM Thread Starter
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Weird miss with tuner

I have recently purchased an 05 F350 King Ranch with 50k miles (first diesel). I have done the egr delete and blue spring upgrade so far. I have an SCT Livewire tuner. I have just been running the canned tunes but whenever I use the street tune, the truck acts like it's missing or guessing which gear to shift to at either WOT or rolling into WOT. The truck runs fine on the tow tunes though. Any advice would be appreciated.
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post #2 of 18 (permalink) Old 02-18-2014, 02:39 AM
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Re: Weird miss with tuner

Have you put many miles on it after changing tunes?

I ask b/c on most tuners the tranny will have to "relearn" and shifting will be a little off for the first 20 or so complete gear cycles.
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post #3 of 18 (permalink) Old 02-18-2014, 02:57 AM Thread Starter
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Re: Weird miss with tuner

I had about 10 miles with that tune. I changed it back to the tow tune in fear if breaking or damaging something. I also adjusted the rev limiter but had no luck there.
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post #4 of 18 (permalink) Old 02-18-2014, 03:07 AM
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Re: Weird miss with tuner

I would put the street tune back on the truck and drive it in at an easy pace in a rural area if you can. come to complete stops then get it up to about 55-60 if it will without too much drama, then slow back down to a stop. do this about 10 times and see if it gets any better. if it is bucking really bad or feels like it is gonna break something stop. if it is just kinda shifting hard or in unusual spots keep driving and see if it gets better.
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post #5 of 18 (permalink) Old 02-18-2014, 03:07 AM
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Re: Weird miss with tuner

Tunes will make an issues with your truck very obvious. The tow tune is very mild and wouldn't show as much of an issue like the street or race tune.

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post #6 of 18 (permalink) Old 02-18-2014, 03:22 AM Thread Starter
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Re: Weird miss with tuner

I give it a try tomorrow. Thanks for the idea, I'll respond with my results.
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post #7 of 18 (permalink) Old 02-19-2014, 01:06 AM Thread Starter
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Re: Weird miss with tuner

I tried the accelerate to 55-60 them stop. The truck will shift correctly now if I accelerate from a stop or while driving. I am still having a surge issue tho. I noticed the truck isn't following the commanded gears on the tuner correctly.
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post #8 of 18 (permalink) Old 02-19-2014, 01:39 AM
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Re: Weird miss with tuner

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Originally Posted by Farchie32 View Post
I tried the accelerate to 55-60 them stop. The truck will shift correctly now if I accelerate from a stop or while driving. I am still having a surge issue tho. I noticed the truck isn't following the commanded gears on the tuner correctly.
sorry I cant help you on this part. im running the sct handheld and an edege for monitoring and ficm tuning. im sure a tuner or someone with more experience will chime in.
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post #9 of 18 (permalink) Old 02-19-2014, 01:43 AM
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Re: Weird miss with tuner

Call drew at back road performance he might have some
insight

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post #10 of 18 (permalink) Old 02-19-2014, 01:45 AM
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Re: Weird miss with tuner

Quote:
Originally Posted by 2Dstorm View Post
Call drew at back road performance he might have some
insight

2004 6.0 ccsb Warren 430/150 hybrids, Warren Comp Trans, Warren Dual Hpop, Billet S475 w/race cover, Marty's A1000 Fuel System, Colt Stage 2, and all the other supporting stuff
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