I did a search and didn't find a thread that mentions better ground contact, but if I missed it, I apologize.
I try not to rely on one forum for everything and was poking around the Ford Focus subreddit and came across these threads:
DCT shudder mitigation.
2015 SE shudder disappeared temporarily
The idea seems to be that the grounding design is flawed, providing insufficient contact due to the ground point being painted and so contact is only using the bolt. This could cause signal problems for the TCM, producing the shudder when it has no idea what to do, and potentially damaging it over time (and part of the reason the TCM is being replaced so often). Side note: this grounding issue seems to be the cause to some intermittent A/C issues folks have experienced.
The solution is to sand off the paint at the contact point and use some dielectric grease for good measure. The video below provides a demonstration (I've skipped ahead to the demo). In the comments, someone mentioned not sanding off the paint to reduce corrosion, but to add a serrated lock washer to the grease, thereby increasing contact with minimal damage.
Thoughts? There isn't a whole lot of feedback, but of what feedback there is, it's positive. I will say here what I said on reddit: I'm skeptical for the same reason I'm skeptical of Tom's tune. If it's really this easy, I have a hard time reconciling the fact that Ford engineers have completely missed it.
But hey, this "fix" is dirt cheap and shouldn't hurt anything.
EDIT: fun fact, the YouTube video was done by FordTechMakuloco, who is makuloco2000 on here and the OP of the 2012+ Transmission Shudder Issue Explained thread. The video above was made before he created the thread and as far as I can tell, he never references the video in that thread. Not sure why, but he hasn't been active since April of 2015.
I try not to rely on one forum for everything and was poking around the Ford Focus subreddit and came across these threads:
DCT shudder mitigation.
2015 SE shudder disappeared temporarily
The idea seems to be that the grounding design is flawed, providing insufficient contact due to the ground point being painted and so contact is only using the bolt. This could cause signal problems for the TCM, producing the shudder when it has no idea what to do, and potentially damaging it over time (and part of the reason the TCM is being replaced so often). Side note: this grounding issue seems to be the cause to some intermittent A/C issues folks have experienced.
The solution is to sand off the paint at the contact point and use some dielectric grease for good measure. The video below provides a demonstration (I've skipped ahead to the demo). In the comments, someone mentioned not sanding off the paint to reduce corrosion, but to add a serrated lock washer to the grease, thereby increasing contact with minimal damage.
Thoughts? There isn't a whole lot of feedback, but of what feedback there is, it's positive. I will say here what I said on reddit: I'm skeptical for the same reason I'm skeptical of Tom's tune. If it's really this easy, I have a hard time reconciling the fact that Ford engineers have completely missed it.
But hey, this "fix" is dirt cheap and shouldn't hurt anything.
EDIT: fun fact, the YouTube video was done by FordTechMakuloco, who is makuloco2000 on here and the OP of the 2012+ Transmission Shudder Issue Explained thread. The video above was made before he created the thread and as far as I can tell, he never references the video in that thread. Not sure why, but he hasn't been active since April of 2015.