Need Your Guys' Help Once Again

[Lucy06]

So far the org members are batting 1000 on figuring out what is wrong with my truck and I have greatly appreciated your help. So here we go again.

I have stupmed my local dealer service department once again. I am concerned about my truck because there is significantly more vibration than normal. It is the worst at a stop or slowing to a stop. As the RPM’s are dropping it starts vibrating and sounds like there is a load on the engine. When I look at the Tacho the RPM’s seem to be where they should be. At a stop the vibration is enough to be felt in the foot and at time pieces in the cab start rattling. When I begin to accelerate the vibration and noise actually seems to go back to normal. On cold starts it will idle at normal RPM and then jump to over 1000 and then when I put my foot on the break it drops. When I shift from drive to Neutral the noise and vibration drop slightly but still seem abnormal. When I shift into reverse it seems to be worse than Drive.

So you know; I have had it into my usual Ford Service guy. He went through it and neutralized the motor and trans (or something like that) and that did not work. He looked through to see if any of the turbo or exhaust pipes were resting on the block and there were none. They say they don’t think anything is wrong and we have been waiting for a Ford Service Engineer (Specialist) to come and look at it but it has been two weeks and he has not called back.

Does anyone have any ideas. Please, please, please help. I am quickly beginning to think I may have bought one of those problem 6.0’s. The truck only has 45K miles on it.

**UPDATE** After having the Ford Service Technician drive the truck he validated my concerns that was an abnormal vibration which he immediately assumed was coming form a poorly aligned exhaust. Two days later nothing had been looked at but they asked about previous work, which they had done to re-balance the turbo. Sat over the weekend... Monday interrogated me about the coolant filter. Today after going through the Ford Hotline Have decided that this is a normal condittion for a 2006 powerstroke. Basically Ford is telling me that I need to learn to live with it until something actually breaks. They seem to discount any suggestions that I make regarding the flywheel or torque converter that has been suggested several time here and on the nation so I don't know if they have even been checked.

If it is normal for a 6.0 to do this then so be it. I just find that a hard pill to swallow being that it was smoothe as butter until about a month and a half agoe and that it just happened to be the same time that they worked on my truck for the turbo going out of alingnment.

What do you guys think? Do I trust what they are telling me or what. Please give me your opinions on anything regarding this...what's wrong what I should do next...anything

[2005F250]

Maybe a bad torque converter? I'de post this over on powerstroke nation.

[Swanee]

"On cold starts it will idle at normal RPM and then jump to over 1000 and then when I put my foot on the break it drops."

My guess is you live in the high desert. This part is normal when it's really cold out. Don't know about the vibration though...

[SandShark]

Have them check your torque converter. sounds like it is bad and there are pieces inside floating around. If the vibration is worse at idle in drive and gets better as you accelerate. thats where i would look. Just my .02 cents.

[Lucy06]

Maybe a bad torque converter? I'de post this over on powerstroke nation.

Thanks for the tip I'll get it posted over there. That's all I needed though is another forum to distract me from actually getting some work done LOL.

So it seems that the high idle is normal at start up when the truck is cold so no worries there but I do have two votes for torque converter. That sounds pricey for a truck that is out of warranty on the powertrain. That isn't by chance covered under the Powerstroke 100,000 mile warranty is it?

[2005F250]

Sadly it isn't covered. Only the engine is covered. I expirenced that myself :( . Could another cause be a bad flexplate? Have you checked the surpentine belt since you just got the idler pully replaced? And last but not least have you checked for codes?

[Lucy06]

Sadly it isn't covered. Only the engine is covered. I expirenced that myself :( . Could another cause be a bad flexplate? Have you checked the surpentine belt since you just got the idler pully replaced? And last but not least have you checked for codes?

I asked them to replace the serp belt when the changed the pulley so that is brand new. Unfortunately I don't have a tool to pull codes with yet. Every time I get enough money to buy my insight the darn truck goes in for service and blows the whole wad. Well actually earlier in the year I had enough money but I ended up getting a new Bow in the middle of deer season. but then after that the truck went in.

I did take your advice and post on the nation, there were a couple of guys that were pointing me in the direction of the flexplate also. Is there any way to see if that is the problem short of opening up the bell housing?

[domesticdiesel]

I have had turbo bolts come loose. There is a TSB for brace and updated turbo pedistal. Have fixed buzz and rattle concerns on many 6.0s.

[Lucy06]

Updated in original post

[Lucy06]

Tried adding some 2 stroke oil based on someones suggestion. It did help make the truck run quieter and seemingly smoother but did not affect this particular vibration. I am all out of ideas. The only one left unchecked is the flywheel theory having a crack in it but I don't know how to get someone to check that without paying a bunch of money for a POSSIBLE cause.

[madmatt01]

check the cac pipe on the passenger side to see if it contacts the battery tray it can cause a vibration if not you can drive down here will look at it for you

[Lucy06]

Thank you for the input, and thank you for the offer to look at my truck. I will probably take you up on that offer. I've been meaning to pay a visit just to see what you guys have going on down there after all of the great feedback I have read on this site about OC Diesel Shop.