Shaking 50-60 in overdrive - Ford Powerstroke Diesel Forum
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Old 02-28-2014, 03:28 PM
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Shaking 50-60 in overdrive

Hey guys I have an 04 F-250 and just the last couple of days it's starting to act up. When I get between 50-60 mph with the truck in overdrive it starts to shake real bad. It only does it if the truck has shifted in to overdrive, if it's in any other gear at that speed then it doesn't shake. Just trying to figure out if this would probably be a tranny problem or u joints or something. The truck still shifts perfect and no other signs point towards anything being wrong with the tranny. Thanks!
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Old 02-28-2014, 06:32 PM
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Bad injector.
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Old 02-28-2014, 08:16 PM
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Really? Didn't seem to me like that would be it since it only does it at the one speed and the truck runs great otherwise, no smoke or anything.
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Old 03-01-2014, 06:27 PM
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Does it smooth out after it warms up to op temp, bad injector. or stiction.
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Old 03-01-2014, 08:27 PM
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Quote:
Originally Posted by midnite rider View Post
Does it smooth out after it warms up to op temp, bad injector. or stiction.
Yeah today was the first time since it's been doing it that I drove it on the highway on kind of a long drive. It did seem like once it got up to full temp that it wasn't doing it anymore.
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Old 03-02-2014, 04:19 AM
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How many miles to oil change, what weight oil are u running. If your not running syn oil then change 5w40 syn and add archoil or rev x, then take it out and run it like u stole it for a little while to help clear up the stiction.
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Old 03-02-2014, 05:10 AM
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Originally Posted by midnite rider View Post
How many miles to oil change, what weight oil are u running. If your not running syn oil then change 5w40 syn and add archoil or rev x, then take it out and run it like u stole it for a little while to help clear up the stiction.
I just had the oil changed at the Ford house 2 days ago so yesterday was the first time I really drove it since and it seemed like it did better. I did do a lot of stomping on it yesterday too in case it was stiction like you had said. I ran a bottle of RevX fuel additive thru it a couple of months ago, I will pick up a bottle of the oil additive and run that thru also. Also on my Insight when I'm at WOT the IPR is maxing at 85%, I never monitored this before but I would assume that's supposed to be 100% at WOT, right?
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Old 03-02-2014, 05:25 AM
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Not sure on that percentage, someone will chime in on that i`m sure. Are u running an oil bypass filtration system on the truck, that really helps to clean up stiction.
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Old 03-02-2014, 05:27 AM
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Originally Posted by midnite rider View Post
Not sure on that percentage, someone will chime in on that i`m sure. Are u running an oil bypass filtration system on the truck, that really helps to clean up stiction.
No sir, I don't have one of those
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Old 03-02-2014, 05:41 AM
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Ok from my experience, my 03 for what it`s worth does not like dyno oil (15w40) . I run 5w40 syn with a oil bypass with amsoil filter, lot of others on this site also do this for the life of the injectors. With that said my 03 suffered from stiction, after the oil switch haven`t had a problem in 50,000 miles.
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