jayandsam09

That is bogus. I had the issue with and without the blended fuel

VoiceOfReason

Ethanol-blended fuels are not the root cause of them problem. If anything, running ethanol-blended fuels with ethanol as the main oxygenate (as opposed to MTBE or "ethanol-free") will likely somewhat alleviate the symptoms.

This is why marine engines and farm equipment or anything that uses fuel where it is likely to be from a container which has been stored for a while have issues with ethanol blended fuel. The ethanol tends to absorb moisture from the air, and then phase-separate over time in the tank, meaning the engine will be trying to ignite an air/WATER mixture instead of an air/FUEL mixture.

Justus

Quick update to my previous post, Ford is not replacing my CAC based on the updated wording for the TSB. The left bank was replaced, but since my freeze frame indicated the event occurring with only 60 percent load...the new wording says that this doesn't apply. The way the TSB is written now is "Acceleration from highway cruise in humid or damp conditions..." so unless load is at 100 percent when the event occurs, they aren't going to entertain replacing anything else.

This is getting a bit ridiculous.

prime81

Sounds like you need to have a pow wow with your dealer. If their #1 priority is customer service, they will get it done regardless of what the TSB says. It pays to be a squeaky wheel sometimes.

jayandsam09

I thought that too, and as you said I buy ethanol free fuel for my boat. I started buying it for my truck after I had the issue the first time. One of the service guys had recommended that. It didnt change anything in my situation but I think there was a lot wrong with that truck. It might make a difference for some but in MY OPINION there are some of these trucks that just have a gremlin in them and nothing will change it.

BoostedXLT

Had mine at the dealer today, they did nothing said there was no dtc's no misfire data stored and it ran perfect on a 50 mile test drive. So now what? Wait till it blows something up?

cdavid67

This happened to me as well. I have the dreaded 55-65 shudder that feels like it's missing. Took it into my dealer here in California and they couldn't duplicate it. (I talked to them about the CAC TSB but I actually didn't think it applied to me because there is NO humidity in California near the coastline)
They told me they would leave the repair order open and if it happened to me again to bring it in. Of course it did happen again! On my days off I returned and one of the techs went with me for a drive. He plugged their laptop into the OBD plug and sat in the passenger seat while I drove.
I jumped on the freeway and almost immediately duplicated my issue and he felt it that time. No engine misfires were occurring but he pressed a button and asked me if that helped. Just as he was asking that the truck smoothed right out. The button was related to the torque converter operation. I was shocked as I was sure it was engine related.
I have another appointment in 2 days to have them reprogram the transmission control module. They said if this doesn't fix the problem they may need to replace the actual torque converter.
I'll keep you all posted.

summertop511

I haven't been on this forum in months but since day one in 2011 when this problem was arising and not in the similar SHO. That the torque converter was the problem. To not have that much torque applied at such a low rpm. The SHO has less wind resistance and doesn't show the torque slip and the 5.0 with the similar trans has to be a a WAY higher rpm to have the same torque. I think after everything settles down and someone finds the problem it will be the torque converter. Wasn't this six speed designed from the old 4 speed casing or something?

clexell

I'm with you. In fact, I traded in my minivan with several issues to buy my new truck. Torque converter slippage was one of the problems.
Hopped into my new 2011 Ecoboost and it did the same thing. I figured it was karma.

thiggins

Dodge was having torque converter issues also with the 4th gen Ram ( I had one). Seems like an epidemic... Have we forgotten how to make torque converters, or have they gotten so high tech that no one understands them anymore ?...