Edit:: I thought you mean the PTU ,  SBS, I have 50k miles on the car.. maybe 150 races and about and equal number of hard launches..  I will see about checking the level and color and smell.

would you recommend adding the 1/3 to 1/2 quart OVER fill to prevent foaming and slippage?

Quote from: SHOdded on January 31, 2018, 10:09:45 AM
Wait, does the tach flutter on cruise with steady load?  That is usually a torque converter symptom.

So far no, only under very sustained WoT load.    If the fluid is bad,  or low .. that may make sense that at higher rpm we start getting jittery / stuttery engagement as the fluid foams heats up or is 'spun to the walls' and not localized to some component?

... maybe .. spit-balling?

Grasping at straws here for you.  But if it is still acting up and you have not changed a bunch of things, maybe try a KAM clear with the handheld and see if it helps for a while?  Just thinking if it was an adaptive issue, that would show it conclusively.

well, to help eliminate the trans, a) make sure the fluid is perfect, and b) maybe top it off by a pint past the hashmarks (tip from LME to help prevent cavitation).  Too little mileage for TSS/OSS sensor or valve body/SBA involvement, but you say you have a lot of track mileage on the SHO, so the "true" mileage could be more than what the numbers tell us.  Some people are fanatical enough to change trans fluid after every track session, and have apparently reaped the benefits of doing so!

BTW, transmission adaptives IME do not change with a KAM reset, that is just the PCM portion.  The TCM / SBA portion has to be reset with IDS or similar highend scan device.

Quote from: SHOdded on January 31, 2018, 05:39:30 PM
BTW, transmission adaptives IME do not change with a KAM reset, that is just the PCM portion.  The TCM / SBA portion has to be reset with IDS or similar highend scan device.

I'm not 100% sure of that? Correct me if I am wrong but LMS has always preached that after an initial flash the transmission shifts can be harsh until the adaptives kick in. I would think that the SCT platform is similar.


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The tuner may reset the TCM adaptive tables, IDK.  You would have to ask them that.  But these tables are independent of the tables in the PCM.

Quote from: stealbluesho on January 31, 2018, 06:13:46 PM

Quote from: SHOdded on January 31, 2018, 05:39:30 PM
BTW, transmission adaptives IME do not change with a KAM reset, that is just the PCM portion.  The TCM / SBA portion has to be reset with IDS or similar highend scan device.

I'm not 100% sure of that? Correct me if I am wrong but LMS has always preached that after an initial flash the transmission shifts can be harsh until the adaptives kick in. I would think that the SCT platform is similar.


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Agreed with SHOdded! THe Trans adaptives can only be reset with IDS or similar high end scan tools!  Z

! No longer available

Added 1/3 to 1/2 a qt of tranny fluid and retested.  Still stuttering hard, making it into 4th was questionable.  I have a brad-cfg log of the event,  not a new tranny log for it so i will upload it later.

I set up a tranny log that has all the tranny pids EXCEPT voltage so i could keep rpm and some of the other normal stuff.  i will try to get a log of the issue using that tonight!

Here is the brad-CFG log of today's run.  Note how long it takes @ WoT to get to 4th gear,  the choppy rpm,  choppy intake timing.  look at the back half of 3rd.  note the waste-gate gets choppy as well and the whole last 3-4 seconds is super jittery awfulness.  yet.. no tell tale source of issues.

I cannot make a tranny log tonight.  it will have to be tomorrow.  

After the tranny log i will follow the Adaptive reset procedure. but i will note that i have had the cables off before for overnight work and not had to do this.  on the good side.. the wife BEGRUDGINGLY singed off on 500-600$ more for a possible TQ-converter. 

But i think that's it.  after that shes done spending money and i sadly think she will be right.

Checking voltage and resistance values on the TCM/SBA will help eliminate that as a physical concern.  Very DIY, will only take your time, and a DVOM.  Same thing with the transmission range sensor.  If the connectors on the PCM have not been inspected, they can be inspected, cleaned and greased as a DIY project.

Let's see what the trans log shows, if anything.

Quote from: TopherSho on January 31, 2018, 10:17:36 PM
Here is the brad-CFG log of today's run.  Note how long it takes @ WoT to get to 4th gear,  the choppy rpm,  choppy intake timing.  look at the back half of 3rd.  note the waste-gate gets choppy as well and the whole last 3-4 seconds is super jittery awfulness.  yet.. no tell tale source of issues.

I cannot make a tranny log tonight.  it will have to be tomorrow.  

After the tranny log i will follow the Adaptive reset procedure. but i will note that i have had the cables off before for overnight work and not had to do this.  on the good side.. the wife BEGRUDGINGLY singed off on 500-600$ more for a possible TQ-converter. 

But i think that's it.  after that shes done spending money and i sadly think she will be right.

I can see in the log EVErYTHING gets choppy halfway through 3rd gear.... wastegate, rpms, manifold pressure, and speedo.. not sure what would be causing EVERYTHING to get choppy like that...

yeah... that is he problem now.  This isn't a TQ converter.  .. this is some kind of 'noise',  bad harness, bad ground, pcm.

Were super close to either being fixed.  Or reverting to stock and selling it.   I am not chasing wiring harness demons.  I just don't have the skill.

I am still going to log the tranny .. but i am mentally prepping that we wont find the TQ converter is bad.  once we see that I will drop in the fresh hand made tune from brad (from scratch new tune on both updated SCT's) and at the same time do the needfull PCM reset for adaptives.

After that all I can do will be to get a PCM on the web,  and try to have ford install it.   That will be the last of the car money, no more water in the well.

Quote from: TopherSho on February 01, 2018, 10:11:11 AM
yeah... that is he problem now.  This isn't a TQ converter.  .. this is some kind of 'noise',  bad harness, bad ground, pcm.

Were super close to either being fixed.  Or reverting to stock and selling it.   I am not chasing wiring harness demons.  I just don't have the skill.

I am still going to log the tranny .. but i am mentally prepping that we wont find the TQ converter is bad.  once we see that I will drop in the fresh hand made tune from brad (from scratch new tune on both updated SCT's) and at the same time do the needfull PCM reset for adaptives.

After that all I can do will be to get a PCM on the web,  and try to have ford install it.   That will be the last of the car money, no more water in the well.

Is it still having the same problems when stock?

Only reason I ask, is if the issue persists while stock, instead of dumping money into guessing, it might be worth while paying a decent dealership hook it up to their IDS system to see if they can find anything. It would be cheaper at this point than throwing parts at it and praying it works.