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Old 02-08-2012, 09:32 AM
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BAD VIBRATION

Hey guys, Im a warehouse manager and I sent one of my drivers on a delivery in a 05 F250 with the imfamous 6.0L. He call me a few mins ago and said that when he pulls up to a red light and is at idle the truck is vibrating a lot more than it should. I am wondering about motor mounts, intercooler boots, or even timing. When he gets back here I am going to have to look at the truck and determine what to do with it. I know about the failures with head bolts and EGRs but is there something I should look for that would cause this problem? I cranked the truck up this morning and noticed no vibration but that is with the engine being cold. Any help pointing me in the right direction would be greatly appreciated.
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Old 02-08-2012, 02:15 PM
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You need to scan it with a good scanner capable of reading live data to see what is going on. Also a quick look underneat at the harmonic balancer to see if there are any obvious signs of it comeing apart.
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Old 02-08-2012, 05:15 PM
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Get to a diesel shop and ask them to diagnose it. Save your time and pain on the diagnosis. Pay 120 to get a full scan. FICM numbers, oil pressure demanded vs actual. Check your coolant. Check your oil.
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Old 02-08-2012, 05:52 PM
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misfires or overfilled oil come to mind
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Old 02-09-2012, 10:46 AM
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I found two codes, a turbo underboost code probably from a cracked intercooler boot and a EGR code so we are going to get a EGR delete kit and a set of aftermarket boots. Thanks for the ideas though. I do appreciate it
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Old 02-09-2012, 11:50 AM
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EGR delete won't fix the rough idle, there is something else going on
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Old 02-10-2012, 04:08 PM
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I didn't think of that, it could be an EGR stuck open, pulling the valve out would confirm that pretty quickly
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Old 02-11-2012, 03:49 PM
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Quote:
Originally Posted by MN6.0f250 View Post
EGR delete won't fix the rough idle, there is something else going on
If the rough idle is caused by the valve being stuck open a delete will fix it. As mentioned above pulling the valve out would confirm this
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