Exhaust clean shudder?

[donzi75]

Hey folks - 2011 6.7 with 16k miles. Want to see if anyone else has had this issue during regen. Doing highway speed (55-75), dashboard says it is going into exhaust clean mode, about a minute later the truck begins a steady engine shudder for entire regen cycle. Accelerate or deccelerate will stop the issue, but if cruise left on it seems like u-joints will wear soon. It is very noticeable...even the wife (who notices nothing) said "what the heck is going on". So...common sense said it was starving for fuel, so 1. brought it to dealer and had both fuel filters changed. Still doing it, so 2. brought it back and had them look at the issue and they did a computer update. Seemed to be even worse, so 3. brought it back and asked them to keep it until fixed, but got a call in the afternoon and tech told service that all readings were ok...but he never drove it through the regen cycle. Service advisor is saying this is probably normal. I am on my way to talk to them today and I guess take the truck back, but I am certain the issue will not be resolved. Anybody else have this and got a resolve? any help would be appreciated.

[mor4wd]

I have not experienced this, don't let them tell you it's normal. Make them ride or drive with you until it regens and it does it. I hate it when a dealer tells you that they couldn't duplicate a symptom, it's like they're calling you a liar.

[donzi75]

I dont think it should be considered normal either. Got the truck back today and had fuel filters changed again just to ensure I rule a slug of bad fuel out. I did get to speak with the tech and had a positive discussion and gave him a better understanding. He said he has had very few of these trucks in and none which have had this type of issue. He did agree to contact ford and make a inquiry, therefore they will call when any news is learned.

[twin200]

I have a different issue,but I would like to share what I've seen with the techs. It looks to me like if diagnostics can't tell them whats wrong,they can't fix it

[donzi75]

Well...not sure if fuel filters did it or not but had exhaust clean on interstate today and it ran perfect. I thought about calling the service advisor, but I will let him see if he comes up with anything. Guess this was isolated incident.

[mor4wd]

Good to hear. Hopefully it was just a fluke.

[M308P]

Originally Posted by twin200

I have a different issue,but I would like to share what I've seen with the techs. It looks to me like if diagnostics can't tell them whats wrong,they can't fix it

So true Twin200!!! I'm having trouble with a similar problem. Before taking the truck in for service, I researched the problem here first so I could hopefully assist the service department in diagnosing / fixing the problem. They hooked up the truck to a laptop and said noting was reading abnormal. They test rode the truck (on flat ground around the dealership) and said they could not duplicate the problem and returned the truck to me. First hill I came upon, the truck began to sputter and loose power. I returned to the dealership, practically kidnapped the service manager, (laptop in tow) and showed him first hand what the problem was. After I duplicated the problem, the almighty laptop still showed nothing abnormal. Service Manager agreed the incident is not normal and has had the truck over 1 week. I call every few days to see what the status is. They report back that they are "collecting data" for Ford Engineers and that every time Ford suggests the fix, it does not work. GRRRRR!!!!

[donzi75]

I still have the issue and truck now has 32k miles. I got nowhere with service advisors but met with service manager and he knew about this issue and he said that ford is working on a quick fix for this. He said to call him back in a month. This is some hope to making this a perfect truck. I am moving two horses about 300 miles in morning and hope the shudder is not too bad while exhaust cleaning. Will post the fix if it ever happens.


Sent from my Autoguide iPhone app

[Serial Fordicator]

There is a new tsb to address this 11-8-24 I believe

[M308P]

Well, I got a call from my Ford Service manager today. So far they have tried computer updates, (twice) cleaning the EGR, cleaning the Mass Air Flow Sensor and nothing has solved the problem. Ford corporate agreed it is time to replace the turbo. They said it MIGHT be finished by Monday. Crossing my fingers this will be the final fix. So far truck has been in service for 16 days.