truck is doing weird things - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 07-25-2011, 04:38 AM Thread Starter Rookie
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truck is doing weird things

Ok guys so i still use this truck as my daily driver. So it normally runs fine except for the shuttering at certain rpm's, so i brought it home and it sat for about 2 hours, i went to go back out with it and when i started it, it sounded like crap sounded like it was knocking pretty bad but no smoke at all. I let the truck sit for another hour and i went back out and started it and just took it down the road for a little test.The truck stumbled a little at low rpms but when i throttle into it it runs fine.So i decided to bring it to my mechanic and while i was driving it on the hwy at 70 i floored it and the son of a ***** took off like a rocket i was at 95 in seconds.Now keep in mind this truck is bone stock and has never felt like this since i owned it.From a dead stop i would punch it on dry pavement and it feels like it wants to break the tires loose.When i got to my mechanics i shut it off and then restarted it 10 min later to take for another test ride and the truck felt like it normally did..
what can cause this
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post #2 of 3 Old 07-27-2011, 12:11 PM
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ficm problems or injectors dropping out likely.
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post #3 of 3 Old 08-05-2011, 05:59 AM
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Any update?
Maybe the EGR valve is on its way out??

2004 Excursion Limited 4x4 6.0L
BDS 11" lift w/ 40" Nitto Mud Grapplers
SCT tuner (Elite Diesel) A-1 H-11 Head studs, Dieselsite coolant filter
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