Hesitation and high KR Cold weather issues?

[ShoBoat]

Ran the tank out and filled up at another station. Still no change. Getting KR all over the place.


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[SHOnUup]

Knock sensor or wide band O2 maybe?

Rich

[AJP turbo]

It's time for a tune revision friend...I'd ask for V9 tune...something has changed from last year....or like I said before...let the sensors make the changes..that's partly what they are there for...


Think of it this way...u are on the cusp of knock and running the max amount of timing and riding the edge and making max power and the ecu is keeping it in check....revise the tune and pull a few degrees in certain places and u will not have the knock retard but still end up at the same timing because it won't be pulling any ....maybe the ecu is not pulling timing because u have a problem but because u are slightly over advanced to begin with

[ShoBoat]

SHOuUp, doubtful. As I have 0 issues with the stock tune.

ajpturbo. Unfortunately LMS won't even acknowledge an issue. Their take is that monitoring through the OBD2 port is not supported, and very unreliable on the Ecoboost. They will not issue a tune revision, only if I drive down there and put it on their dyno. I understand that the car will adjust and make corrections on the fly based on what is happening. I am still thinking that the fuel has something to do with it. Winter gas really sucks to begin with, I really should have tried the 91 Shell but I tried another 94 Petro Canada. By the end of the week I will have run this tank out and will try the 91 Shell with the 91 V8 Tune. I do know that with the V1 93 tune that I had in it. I ran it all winter long and never had any issues.

[SHOnUup]

Man, I feel like sending you a jug of E/85...lol

Rich

[AJP turbo]

Oops I accidentally hit the thank you button.....anyway sorry if I missed it but have u simply tried a bottle of quality octane booster?

[ShoBoat]

Oops I accidentally hit the thank you button.....anyway sorry if I missed it but have u simply tried a bottle of quality octane booster?

Going to try that today. I have a bottle of Torco Accelerator, going to stick in 16oz and see what happens.

[ZSHO]

Did the dealer ever re-program the PCM on your last visit?how long have you been using those ngk plugs based on your sig.Z

[ShoBoat]

Did the dealer ever re-program the PCM on your last visit?how long have you been using those ngk plugs based on your sig.Z

According to the work order that I got no they did not. I had only 10k km on the NGKs. I swapped them out for a set of SP534. Which made no difference.


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[ShoBoat]

http://www.chargerforums.com/forums/archive/index.php/t-118227.html

A possible cause!


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[ZSHO]

Did you ever check out this TSB REFERENCE.Z    TSB #ASI-44315

NHTSA ID #10054975

Date Announced:
DECEMBER 01 2013

Additional Info:
How to Fix

Summary: FORD: DUE TO FUEL VAPOR LINE NOT BEING CONNECTED PROPERLY (FULLY SEATED) TO UNDERSIDE OF FUEL DELIVER MODULE (FDM), WHICH LEADS TO CARBON CANISTER SATURATED WITH LIQUID FUEL AND A FUEL ODOR, SLOW FILL, OR HESITATION OR STUMBLE, OCCURS WHIL

[panther427]

Have you checked the knock sensor wiring.   Or bad sensor.

[ShoBoat]

Did you ever check out this TSB REFERENCE.Z    TSB #ASI-44315

NHTSA ID #10054975

Date Announced:
DECEMBER 01 2013

Additional Info:
How to Fix

Summary: FORD: DUE TO FUEL VAPOR LINE NOT BEING CONNECTED PROPERLY (FULLY SEATED) TO UNDERSIDE OF FUEL DELIVER MODULE (FDM), WHICH LEADS TO CARBON CANISTER SATURATED WITH LIQUID FUEL AND A FUEL ODOR, SLOW FILL, OR HESITATION OR STUMBLE, OCCURS WHIL

I had the recall performed on mine, not sure what it entailed. I know they needed to do something with the fuel pump. However, I have not noticed the other symptoms.

I did put in 16oz of Torco Accelerator to a full tank. Which should raise the Octane 2-3 points. Took it out again, and it's not as pronounced. I loaded the 91 tune, it's all but gone Only a bit at WOT and 2 KR lugging before a downshift. I honestly can't believe that "winter gas" is that different?? If it is the fuel I can't imagine that more people are not having the same issue.

panther I have 0 issues with the stock tune. Even then I did spend a fair bit of time under the hood looking at the knock sensor wires and potential sources of noise. Nada.

[AJP turbo]

Shoboat the fact that it goes away when u return to stock tells me all I need to know and it's all tune....and that the torco helped...that is the stuff I would've said to u use I just didn't know if u had that up there in canadia lol.

And as far as u being surprised that more people don't notice Id say because people don't pay as much attention as u...I've honestly never looked at my spark and knock sensor at part throttle...1 because I didn't adjust timing in that area and 2 engines can tolerate much more timing advance and some knock because it's under light load....and I also wouldn't worry because u are not actually knocking it's pulling timing to prevent it from knocking

[SHOdded]

ShoBoat, have you looked at your trans shifts at the time the KR occurred?  I have noticed that as a possible issue on my Edge most often when slowing to a stop (no throttle input).  Maybe even skipping gears.  FSM points to valve body/TSS-OSS sensor involvement, among others (first line being PCM/calibration related).  I have used 104+ before successfully to mitigate the issue, though not eliminate it.

Yours may be in too early a stage for all/any of the above.