[jmac5939]

Okay, so I have two problems here. I will explain one that led me into finding the other. At this point, neither are resolved.

Problem 1: I have a vibration, driveline it would seem, between 65-70mph. I’ve replaced all u joints and CSB in the last month. I have also greased the slip joint in rear drive shaft. Tires are 35 AMP AT2s that have 10k on them. Brakes just started to squeak so may be I have a warped rotor or (unrelated) may be a tire has lost its balance. I have checked under hard acceleration, coasting and cruising - vibration is always there from 65-70mph. I feel it in my feet and in my arse so whether it’s front or back is still TBD.

Problem 2: I noticed while testing the vibration under hard acceleration that the vibration is more accentuated with rpm’s exceeding 2500. I played with this several times but my 5inch exhaust is usually sounding like a 6.0 trumpet in this range so I can’t tell if it’s noise pollution I’m feeling or what. I brought it home, put the truck in neutral and revved above 2500 rpm’s. As before, the girl sounds great and isn’t stumbling at all but there’s so much noise coming from the exhaust it’s hard to tell if it’s the exhaust note creating vibrations.

Again, problem 1 I think is somewhere in the driveline as it is not rpm dependent. However problem 2 has me perplexed. Is it exhaust note? Exhaust vibration? Turbo loose? Harmonic? Torque Converter? It’s very annoying and with the combination of driveline and whatever problem 2 is, getting on the accelerator is not putting a smile on my face.

😩

any ideas?

thanks in advance

 

[Speeddog1]

Okay, so I have two problems here. I will explain one that led me into finding the other. At this point, neither are resolved.

Problem 1: I have a vibration, driveline it would seem, between 65-70mph. I’ve replaced all u joints and CSB in the last month. I have also greased the slip joint in rear drive shaft. Tires are 35 AMP AT2s that have 10k on them. Brakes just started to squeak so may be I have a warped rotor or (unrelated) may be a tire has lost its balance. I have checked under hard acceleration, coasting and cruising - vibration is always there from 65-70mph. I feel it in my feet and in my arse so whether it’s front or back is still TBD.

Problem 2: I noticed while testing the vibration under hard acceleration that the vibration is more accentuated with rpm’s exceeding 2500. I played with this several times but my 5inch exhaust is usually sounding like a 6.0 trumpet in this range so I can’t tell if it’s noise pollution I’m feeling or what. I brought it home, put the truck in neutral and revved above 2500 rpm’s. As before, the girl sounds great and isn’t stumbling at all but there’s so much noise coming from the exhaust it’s hard to tell if it’s the exhaust note creating vibrations.

Again, problem 1 I think is somewhere in the driveline as it is not rpm dependent. However problem 2 has me perplexed. Is it exhaust note? Exhaust vibration? Turbo loose? Harmonic? Torque Converter? It’s very annoying and with the combination of driveline and whatever problem 2 is, getting on the accelerator is not putting a smile on my face.

😩

any ideas?

thanks in advance

I have over sized down pipe on my 6.0, they flatten it a little so it wouldn't rub on fire wall. But I do feel a vibration when taking off. Hard to say exhaust growls when I jump on it so it's loud anyways.

 

[jmac5939]

I have over sized down pipe on my 6.0, they flatten it a little so it wouldn't rub on fire wall. But I do feel a vibration when taking off. Hard to say exhaust growls when I jump on it so it's loud anyways.

Yea, growls, blasts, roars. The sound from the 5” is exceptional. The vibrations just bother me. I’m going to crawl all over it today.

 

[jmac5939]

Update:

After crawling under the truck I noticed none of the hangers touching the frame where they protrude through the rubber bushings. All of the clamps are tight but I did notice one of the cooler lines for the transmission was <1/16" away from the two piece down pipe. you can easily move the exhaust side to side too because I think it is suppose to swivel off of the turbo??? So, it's easy to imagine that it's making contact with that cooler line and sending vibrations through the truck....

Now to figure out how to keep it off there...

 

[SuperCrutyPS]

Go get some exhaust wrap and wrap the down pipe to provide some isolation to the cooler line.

 

[jmac5939]

Go get some exhaust wrap and wrap the down pipe to provide some isolation to the cooler line.

I actually did this today and it is considerably better. I also tightened down the V clamp on back of turbo. I think now all I feel is the clapping thunder of the 6.0.

Additionally, I took the truck to NTB and they were able to roadforce balance. This has helped with the issue but not resolved. The truck has some dated Rancho’s on it currently and I ordered Bilstein’s this morning at $425 (includes steering dampener). Hoping a combination of will resolve.

As for now it’s onto the 22’ Proline center console to give it some love 👌

 

[jmac5939]

Awhile back I posted threads about vibrations. Everything from drivetrain to exhaust. I stumbled across a video on YouTube today that had me questioning my super duty too. Low and behold my truck does the same thing this guy’s does. Don’t really feel too much in the seat but man if you touch the tail pipe it’ll send vibrations all the way up your spine. My question is, does your guys’ truck vibrate like this at the tail pipe? Can anyone confirm this is a normal operation of the diesel or is something still not quite right? I wish I had another one to compare to but sadly, I don’t. Any help is appreciated and link to YouTube short is attached for reference.

6.0 Powerstroke exhaust vibration

youtube.com

 

[jmac5939]

Coming back to this…

I stumbled across a video on YouTube today that had me questioning my super duty too. Low and behold my truck does the same thing this guy’s does. Don’t really feel too much in the seat but man if you touch the tail pipe it’ll send vibrations all the way up your spine. My question is, does your guys’ truck vibrate like this at the tail pipe? Can anyone confirm this is a normal operation of the diesel or is something still not quite right? I wish I had another one to compare to but sadly, I don’t. Any help is appreciated and link to YouTube short is attached for reference.

6.0 Powerstroke exhaust vibration

 

[The Bone]

I would check your motor mounts. I would also do this some place on the motor to see if it is vibrating just like the exhaust. If it is then you need to investigate further. Could be a bad harmonic balancer. You could be getting crankshaft vibrations.

 

[Heavy_GD]

I'm confused, are we trying to discuss why a diesel motor vibrates or why your 5" pipe is rattling?

 

[jmac5939]

I'm confused, are we trying to discuss why a diesel motor vibrates or why your 5" pipe is rattling?

That’s fair and warranted I suppose. No such thing as a silly question I’m told. Trouble is, it’s not just a normal vibration. Obviously I can’t share tangibles over the interweb but it certainly feels excessive. I’ve owned diesels my entire life and something’s off with this. It literally will rattle your teeth if you put your foot on the exhaust. Every clamp is tight and torqued to 50 ft/lbs. The exhaust isnt making contact with any components of the truck. You can sort of feel it in your feet/steering wheel and seat. Hopefully this provides more context.

 

[Heavy_GD]

Ok, if you want to solve this you have to isolate the issue.

Are you saying that the only issue now, is if you are touching the exhaust at idle?
Or are you saying this is an issue in the driver seat while underway?

Also since its easy to reproduce the issue, you need to share your own pics and videos.

 

[jmac5939]

Here’s my clip.
Only recognizable at idle now. If you pay close attention to video you can see the vibration in the exhaust.

Vibration in exhaust

youtube.com

 

[jmac5939]

Okay, so I have two problems here. I will explain one that led me into finding the other. At this point, neither are resolved.

Problem 1: I have a vibration, driveline it would seem, between 65-70mph. I’ve replaced all u joints and CSB in the last month. I have also greased the slip joint in rear drive shaft. Tires are 35 AMP AT2s that have 10k on them. Brakes just started to squeak so may be I have a warped rotor or (unrelated) may be a tire has lost its balance. I have checked under hard acceleration, coasting and cruising - vibration is always there from 65-70mph. I feel it in my feet and in my arse so whether it’s front or back is still TBD.

Problem 2: I noticed while testing the vibration under hard acceleration that the vibration is more accentuated with rpm’s exceeding 2500. I played with this several times but my 5inch exhaust is usually sounding like a 6.0 trumpet in this range so I can’t tell if it’s noise pollution I’m feeling or what. I brought it home, put the truck in neutral and revved above 2500 rpm’s. As before, the girl sounds great and isn’t stumbling at all but there’s so much noise coming from the exhaust it’s hard to tell if it’s the exhaust note creating vibrations.

Again, problem 1 I think is somewhere in the driveline as it is not rpm dependent. However problem 2 has me perplexed. Is it exhaust note? Exhaust vibration? Turbo loose? Harmonic? Torque Converter? It’s very annoying and with the combination of driveline and whatever problem 2 is, getting on the accelerator is not putting a smile on my face.

😩

any ideas?

thanks in advance

Plenty of times folks don’t come back to the threads after they resolve issues and I realize this thread is old but hopefully will help someone in the future.

Going back to Problem 1. There were actually two issues that were at play. The first is the tires. I have a set of Amp Terrain Attack AT/A’s. I’ve moved these around a bit on the truck and with 10k on them they’ve got some feathering. So anytime you’re in the 65-70mph range there’s some vibrations and it’s annoying but was masking the bigger problem. A failing rear pinion bearing finally reared it’s ugly head. I never had any play in the hole in going into the diff. Couple weeks ago I got the whine which was the tell tail sign. Rebuilt whole rear from hub to hub. Ta Da! Vibration in the rear is gone. Moved those feathered tires around and wherever they are you can feel the vibrations in there respective locations.

Now, time to ditch the crappy AMPs for…?