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| 2004 to 2008 F-150 and Mark-LT 4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs. |
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Thread Tools | Display Modes |
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#1
Wed, April 29th, 2009, 10:02 PM
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New Issue
Ok, this is hard to expalin but here we go. The tranny does like these new tunes. The 1-2 shift rarely feels smooth and almost seems to bind up sometimes. Sometimes under light throttle it almost feels like the engine is bogging down but the RPM's are not altered. It is very wierd. THe other day it did it on the highway so bad I thought I had a flat tire and I had to pull out of traffic. Thats how rough it was. But the RPM's were fine staying around 1800.
I flashed it back to stock and drove 2 tanks through it and no problems. I flashed the 87 perf tune back in and 2 days later it started again. THe tranny issues are always there for some reason, but the engine/tranny stutter is not cool. No DTC's, safe mode, or any form of error signals..... At a loss here.... A side note the other am when I was leaving the house 1st thing it backfired up front. Sounded like it came from the intake but I was half awake and could not really tell. Need some help on this one guys...gonna flash back to my VMP tune until I can get this resolved... Perf wise my Mods are AFE CAI, SIDO Super 40's, Livewire (VMP-Troyer/Gryphon (PHP) depending on whose tune I am running.
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Last edited by SinCityFX4; Wed, April 29th, 2009 at 10:17 PM. 
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#2
Wed, April 29th, 2009, 11:51 PM
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What do you have everything set up at?
What's the torque coverter doing? What's on the display? What's the shift firmness setting at? Lars
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SENIOR MODERATOR--PTLA God doesn't have a Facebook but he's my friend. God doesn't have a twitter, but I follow him.
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#3
Thu, April 30th, 2009, 12:25 AM
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Quote:
The edge/gryphon software/settings is new to me..
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#4
Thu, April 30th, 2009, 01:15 AM
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Interesting, I was just reading a tech article about TC hard lockup issues and they pointed out that its not always TC/ trans issue
"A simple random misfire could prevent the PCM from engaging the converter clutch, and there need not be a DTC set for this to occur. Yet openloop scenarios, faulty ECT sensors and VSS problems are still the familiar reasons for a loss of TCC. A more sophisticated TCC apply strategy provides additional possible causes for its malfunction" Probably not you case but you may want to PM Cody and see if he has any ideas...
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DJ Phoenix (my modded) Hi-1200/240Tow/75FS/80DD/100/140SS +Minotaur ASE Master Auto Technician  2001 Ford Excursion 7.3 4x4 Projects. 1970's Hustler and Max II Amphibious ATV's
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#5
Thu, April 30th, 2009, 02:05 AM
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I don't think he's got a diesel, southpaw.
But, it works good for a while and then goes south? I suspect, sadly, this is another job for the Mad Doctor! - Jack
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 2024 F150 Platinum SCrew 3.5L PowerBoost FX4, Peragon Tonneau Cover, LineX Bed, 35% Window Tint on All Sides and Rear, Full Nose Paint Protection Film, Husky Mud Guards, Lasfit Floor Liners, VIOFO Dash Cam
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#6
Thu, April 30th, 2009, 02:21 AM
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THe tranny always does not shift good from 1-2 at any load and sometimes 3-4 under light-moderate load.
The bizarre shudder wtf deal happens every now and then. I tried PM'ing Bill. We'll see.
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#7
Thu, April 30th, 2009, 07:32 PM
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Quote:
The backfire you describe can be one of two things. 1. Lean condition. The mixture is lean enough that it's burning slowly and still "on fire" when the intake valve opens again. It's common in a carbureted vehicle to exhibit this same condition when overly rich as well since the extra fuel will pool up (become a liquid again) and cause a lean condition. Since it's hard to get THAT rich with an EFI vehicle unless the ECT sensor is open and giving a reading of -40 degrees........... 2. Exhaust valve not opening. I doubt this is the case since you don't have any other engine related problems. Your transmission issue really sounds like a shift timing problem, but it's difficult to get the PCM to command 2 gears at once without it knowing about it.
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Tuning, flashing, burning chips, and repairing all aspects of 7.3L Powerstrokes. SEVEN 7.3L-powered vehicles in the driveway. Two didn't come that way from the factory!
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#8
Fri, May 1st, 2009, 12:41 AM
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The 1-2v shift is rarley smooth as it should be regardless of throttle level. The serious shudder issues are always under light-moderate throttle and never at WOT. Honestly I am afraid it will cause an issue so I have not been at WOT for the last few days. It did it again where it shuddered REAL hard from 1-2 at light-moderate throttle coming through a rolling stop at a stop sign. My 10 year old looked over and asked "dad, what the heck was that?"
 Flashed back to stock and loaded up my VMP tune. Hopefully I can get answer from Bill. Til then the PHP tune will have to sit on the shelf. I dont have 15k on my truck yet and do not want to shorten the tranny lifespan. 
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#9
Fri, May 1st, 2009, 11:55 AM
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Hey SiCityFX4 I have a 07 F150 4.6 with an AFE CAI and my truck does the same backfiring thing when it is cold in the morning. I was told that it was from being too lean and that Bill would be able to fix it with my custom tune that he is making for me, but now I am nervous. I am staring to think that it is from the AFE brand CAI bc the only people on this site that are having the same problems as we are have an AFE CAI.
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#10
Fri, May 1st, 2009, 12:06 PM
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Quote:
- Jack
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Hybrid Mode
