Stutter at WOT when cold.... Flashing CEL and Limp Mode...

[ToMang07]

So driving a 55mph highway the other night, it was cold (single digits) and I went to WOT to pass someone. About 1/2 way through the pass the engine stuttered (felt like a missing cylinder) and the CEL came on flashing. It stayed like that for roughly 5 minutes (FELT like a lot longer) and then it went out, and back to normal. No codes popped up in the info screen and none registered in the system, still haven't scanned it with Forscan.

I will say my brother's truck had this issue last winter, at which time we changed the plugs. His truck (14 F150 3.5L ecoboost)  hasn't worked yet so far since we started getting this cold winter weather, but he says it happens somewhat frequently to him when it's cold and he gets on it.

Is this common? Anyone else experienced this? Any known solutions? I have an unknown "cold weather" tune for the car that I may try and see if it replicates. NOT COOL. Limp mode when your passing someone is dangerous as ****.

 

[SHOdded]

What was engine and trans temperature at that point? Any idea?  Do not recommend WOT until the trans is at least past 100F, preferably 140F.

I don't think it is a fluid not high enough type issue, but it could be.

When was fluid last completely exchagned out?

Still running 93 octane?  What brand?  Some brands are better behaved, even some stations within a brand, than others.  Cannot take for granted.

 

[ToMang07]

Tranny/oil/coolant were all up to temp, probably had driven 20+ miles at that point. Oil pressure was good/normal.

I run strictly 93 from Citgo, since that's the only station around that carries 93. The car only JUST broke 60k miles, running Amsoil. Planning to do a drain/fill on the tranny in the spring. Boost Juice as well.

 

[El_SHO]

Have you found anything else wrong?.. my sho does the same with all tunes! And it sucks takes away the fun out of the sho

 

[ZSHO]

I would have the Ford dealer Reflash your PCM to the latest updates applicable to your vehicle.  Z

TSB for the 13-SHO..

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[ToMang07]

Have you found anything else wrong?.. my sho does the same with all tunes! And it sucks takes away the fun out of the sho

Hasn't done it again as of yet. I passed a semi today @120mph (50-120 WOT) and not a hiccup. It was in the single digits here this morning. 6*F

 

[ToMang07]

I would try to update and Reflash your PCM @ your local Ford dealer. Z

I don't believe a reflash will do any good on a tuned vehicle, will it?

 

[SHOdded]

It might if there is an update to the Ford calibration.  Then you would need to get an updated calibration from Unleashed and put that on, after updating the X4 of course.

 

[ToMang07]

Yeah, means I'd have to buy new tunes. Unleashed has no interest in working with me since I'm not the original owner.

 

[El_SHO]

Have you found anything else wrong?.. my sho does the same with all tunes! And it sucks takes away the fun out of the sho

Hasn't done it again as of yet. I passed a semi today @120mph (50-120 WOT) and not a hiccup. It was in the single digits here this morning. 6*F

Was that on your stock tune?? So I'm guessing the cold doesnt have anything to do with it studdering

 

[SHOdded]

What fuel setup are you running on stock vs tuned?

 

[El_SHO]

I've been on stock tune going on 2 months...  I was chasing a ghost also I've change all fluids replaced plugs with different gaps, cleaned map and maf and throttle body with no luck. I even got with torrie from unleashed and he didn't seem like he was to worried he just asked if I had recently done the fluids and to replace plugs with 542 gapped at .025

 

[ToMang07]

What fuel setup are you running on stock vs tuned?

No, I have a 3-bar so I can only run tuned.

 

[ToMang07]

What fuel setup are you running on stock vs tuned?

I'm running stock fuel/turbos/injectors.

 

[sm105k]

Yeah, means I'd have to buy new tunes. Unleashed has no interest in working with me since I'm not the original owner.

WTF?  Is that usually policy?  I would be emailing another tuner ASAP.  Quite a few of us use AJPTurbo.  Brad (the tuner) does a great job.

 

[ToMang07]

Yeah, means I'd have to buy new tunes. Unleashed has no interest in working with me since I'm not the original owner.

WTF?  Is that usually policy?  I would be emailing another tuner ASAP.  Quite a few of us use AJPTurbo.  Brad (the tuner) does a great job.

Apparently.

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[SHOdded]

Some "warranties" travel, some don't.  I guess Unleashed's does not, but I also assume it to be common practice unless you are on a first-name basis with the tuner.

 

[sm105k]

Some "warranties" travel, some don't.  I guess Unleashed's does not, but I also assume it to be common practice unless you are on a first-name basis with the tuner.

I get that, however if I am the new owner I don't expect changes or anything for free from the tuner.  However, I would expect some type of support or direction, because everyone's "tastes" are different.  Maybe I have read into this completely wrong? 

 

[SHOdded]

Well, if you know what mods u got, and what you would like to change, yes, the tuner should be able to give you some support in that regard.  What is safe, what not, in a manner that is not a significant time investment on the tuner's part.  That said, yes, some tuners are more "forthcoming" in that regard.  Whether because they have it in their business model, whether it is just who they are, etc.  Different people are comfy with different levels of support.

 

[StealBlueSHO]

Technically your a new customer as you have never paid for a tune I guess. Torrie is notoriously short winded and doesn’t offer much help with issues other than “try this one” or “it’s not the tune it’s your car”

I would suggest pinging AJPTurbo or Gearhead since you already have an SCT device.

If the car was tuned during the summer then I would be willing to bet the issue is fuel pressure. Torrie tunes to the max at any given time. A lot of Unleashed customers have a summer and winter tune.


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