PTU blew.. (confirmed PTU now)

[TopherSho]

OK we have update(s)

I'm glad i am a backup nut job.  they were able to recover the stock tune from mt .BEF backup files that i make EVERY SINGLE time AJP sent me a update.

The SCT lady who was very helpful did say that the device should not have been able to pull a bad file FROM the ECU to the SCT device. but also said in the same sentence that it may be possible if the car goes from running to accessory mode.. and you try it there.  I might have done  that in error as i was swapping back to the 2 bar before reverting to stock.

it is idling correctly and no wrench codes.  i will try to rev it after it idles for a while,  and then drive it if no codes pop up.

 

[StealBlueSHO]

Dude... clean your air filter... Ford says so!!!

 

[TopherSho]

Dude... clean your air filter... Ford says so!!!

Heh .. I am not entirely sure what they considered dirty as I cleaned it no less than 4 weeks ago myself

As to the car now that I'm running fine on stock I can confirm that there is zero issues with the stock performance..


The only way I can get the behavior to occur now is to turn hard left or right and floor it, but that's always been the way these cars behave

EDIT :: i will wait on brads thoughts.  im leaning towards from scratch retuning it.  but its up to him.

 

[TopherSho]

Brad has built a fresh tune based off of the last good REV,  i will try it out. in a little bit.

I predict the issue will still occur,  I think it is the TQ converter as a random topher guess.

 

[TopherSho]

Testing is NOT complete.  But so far the new tune is running well.  Rain has stopped me from testing any further.

 

[SHOdded]

Rain?  So your SHO does not have AWD? 

 

[SHOme]

I think I concur.

Brad has built a fresh tune based off of the last good REV,  i will try it out. in a little bit.

I predict the issue will still occur,  I think it is the TQ converter as a random topher guess.

Sent from my XT1585 using Tapatalk

 

[TopherSho]

Rain?  So your SHO does not have AWD? 

WoT with the 100% meth in the rain *MMIIGGHTT* skew my results a tad when trying to determine TQ issues on the fronts

 

[Macgyver]

Since they serviced and flushed etc your Trans.

What is the fluid level at ?

Isnt the recommendation here to slightly over fill these units?

 

[TopherSho]

Since they serviced and flushed etc your Trans.

What is the fluid level at ?

Isnt the recommendation here to slightly over fill these units?

yes ... hmmm by 1/3-1/2 a quart .. hmmmmmmm that might help.  it seems better but i will know more tomorrow when it is dead cold.  i will see about adding fluid tonight ..

 

[TopherSho]

Since they serviced and flushed etc your Trans.

What is the fluid level at ?

Isnt the recommendation here to slightly over fill these units?

yes ... hmmm by 1/3-1/2 a quart .. hmmmmmmm that might help.  it seems better but i will know more tomorrow when it is dead cold.  i will see about adding fluid tonight ..

Anyone have a preference on tranny fluid for the extra 1/3 to 1/2? keep in mind it will be mixed with the oem generic crap from the dealership.

 

[TopherSho]

Ok, on the way to the store it did it again stone cold.  Will add fluid.. test again tomorrow

 

[ajpturbo]

Topher few things I also saw. You hit the rev limiter every time on the shifts even though your shift points are lower than stock. When you see torque source 4 in the log that is rev. limit.

When you look at commanded gear is starts at 1 like it should then goes to 2 like it should then back to 1 even thouh you actually get to 3rd gear.

And when you look at vehicle speed it's the most jagged line I have ever seen in a log. It's like it's not commanding the correct gear or there is an electrical or sensor problem

It's odd. I'll attach a screen shot the way I view it.. RPM, commanded gear and vehicle speed.

 

[TopherSho]

This is my last trip to this dealership.  Tranny fluid barely on the stick.

Post video later

 

[TopherSho]

Topher few things I also saw. You hit the rev limiter every time on the shifts even though your shift points are lower than stock. When you see torque source 4 in the log that is rev. limit.

When you look at commanded gear is starts at 1 like it should then goes to 2 like it should then back to 1 even thouh you actually get to 3rd gear.

And when you look at vehicle speed it's the most jagged line I have ever seen in a log. It's like it's not commanding the correct gear or there is an electrical or sensor problem

It's odd. I'll attach a screen shot the way I view it.. RPM, commanded gear and vehicle speed.

See and you thought I was crazy .. let's see if the @#$_ing quart and a tiny bit more to full stick solves it

 

[ajpturbo]

Topher few things I also saw. You hit the rev limiter every time on the shifts even though your shift points are lower than stock. When you see torque source 4 in the log that is rev. limit.

When you look at commanded gear is starts at 1 like it should then goes to 2 like it should then back to 1 even thouh you actually get to 3rd gear.

And when you look at vehicle speed it's the most jagged line I have ever seen in a log. It's like it's not commanding the correct gear or there is an electrical or sensor problem

It's odd. I'll attach a screen shot the way I view it.. RPM, commanded gear and vehicle speed.

See and you thought I was crazy .. let's see if the @#$_ing quart and a tiny bit more to full stick solves it

I'm no trans expert but I've had cars with low fluid and they slip terribly and don't catch gear...Topher I fear for your car already...If it's slipping that bad I'm wondering about the clutches too.

The ECU calculates gear sometimes by what's called N/V ratio..I forget what that stands for exactly ...Engine speed over vehicle speed...And it gets used someway but the car won't shift correctly...So if it's slipping engine speed may be out of whack for the vehicle speed and also if the vehicle speed isn't being reported correctly as seen in that pic, then things could be all out of whack.

Spit balling here also.

 

[ajpturbo]

Here is a screen shot of a WOT pull showing what vehicle speed increase SHOULD look like....You can even see a little spinning on the 1-2 shift....And you see the commanded gear lines increase as they should through the gears.

Topher, your's is jagged like nothing I've seen.

 

[TopherSho]

ok in total I added 1 quart, and a tiny bit more.. like a 1/8th more.  The ball is now covered right up to but NOT on the cable part as i remember doing it when i initially had the other guys tune. 

I will test it dead cold in the morning .. but i am 99% confident it is now solved.

https://www.facebook.com/topher.mctopherton/videos/10155853283557685/

 

[SHOdded]

If the issue persists, you can try logging more trans related pids, that will show shift lag, tc slippage, etc.  Good luck with the testing tomorrow/today!

Might also be looking at a TSS/OSS sensor issue (and MAYBE a TRS issue) now/down the road.

 

[TopherSho]

If the issue persists, you can try logging more trans related pids, that will show shift lag, tc slippage, etc.  Good luck with the testing tomorrow/today!

Might also be looking at a TSS/OSS sensor issue (and MAYBE a TRS issue) now/down the road.

Will do.

Test went 90% good.  10% suspicious.

From a dead cold start from last night i hard accelerated from a left hand turn to my Dairymart for Diet Mt.Dew, no issue.  When i left i gave it the hard boot again,  no  issue.

at a stop light i power braked it to about 2200 rpm and let go and it ran great but it seemed to skip either at shift or before **** i honestly could not tell.  that made me suspicious so i did it again on a side road.

it did hiccup around 4000 rpm.. but it was NOTHING like what is has been doing.  i did it a few more times but now it is hot and not doing any of the behaviors.

Next test :
-turn meth onset down (up) a quarter turn, its cold for meth out here now,  remove chances of wet/misting the plug
-from a dead cold sit power brake to 2000 rpm and try again.

Tophs ...