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Drivetrain problem - shudder/ vibration @ 55 - 60 mph

19282 Views 9 Replies 6 Participants Last post by  JesusSaves

I have a 2000 F250 4x4 that does not seem to run with the same vigor it used to, seems to take longer than usual to shift to the higher gear and also seems to vibrate between the 55 - 60 mph ( smooths out at 70+)

At all speeds it seems like an imaginary very heavy load has been hooked to the truck

Engine seems to run fine, idles fine starts up easy,

What could it be? No check engine lights..

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I had a vibration in my 01, and it turned out to be the slip joint on the rear driveshaft, it needed to be greased. that would not effect engine performance of course but it's an easy fix for the vibration.
The engine performance could be an injector or 2 going bad. I don't want to put a scare into you (it would if it were my truck, I loves me some 01 Lariat). Check the fuel pump pressure too.
I guess the best thing to do at this point is take it into a ford dealer to have them check it out and then go from there, you'd hate to keep throwing parts at it, it gets expensive.
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