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  #1  
Old 12-05-2012, 05:00 AM
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Help me diagnose this vibration

2004 6.0 f250 stock with exception of tuning and 5" exhaust.

I have a vibration in the floor on both the driver and passenger side. Vibration only happens at around 1500-1750 rpm in every gear. 1, 2,
3, 4, 5, 5L. Even does it in neutral and park when I rev it up, but it is not as bad as when I am in drive.

I'm really stumped what this is, anyone have any ideas?

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Old 12-05-2012, 05:33 PM
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Anyone?
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Old 12-05-2012, 06:25 PM
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Exhaust rubbing the cab or frame?

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Old 12-05-2012, 06:28 PM
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I can't find a spot where it is rubbing. I had checked that before and it was rubbing the shackle bolt, but have since then fixed it.
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Old 12-05-2012, 06:34 PM
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If you wouldn't have said floorboard vibration, i'd have said bad injector.

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Old 12-05-2012, 06:37 PM
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I heard spool valves can make it vibrate about this range of RPMs so not sure if its my injectors or what type of vibrations injectors will make.

I also heard something about it maybe being exhaust/turbo drone. Wondering if anyone has experience with this.
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Old 12-05-2012, 06:54 PM
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I had an injector take a hike, idled like crap, and shuddered/vibration at 60-65mph, but would clear up when getting on the throttle. There is a tsb for tutbo droan, may have only been 03', iirc. Check your tutbo mounting bolts.

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Old 12-06-2012, 09:33 AM
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This is the TSB:
http://www.thedieselstop.com/faq/949...les/041804.pdf

Anyone have any experience with this TSB? It would kinda suck to buy $60 pedastal just to find out that's not the problem.
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Old 12-06-2012, 10:27 AM
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You may want to check your motor mounts and transmission mount for busted rubbers.
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Old 12-15-2012, 09:42 PM
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I had a similar issue after replacing the hpop. I found the number two cylinder harness for injector was not snapped all the way on. Causing a dead cylinder at times, which then was causing a vibration in about the same rpm area you are describing. It would go away under wot.

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