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2004 Has Too Much Slack in Drivetrain

Old 11-21-2011
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Default 2004 Has Too Much Slack in Drivetrain

I have a 2004 Ford 5 man cab F-150 with 118,000 miles, a 5.4 and auto trans with O/D and 4 X 4. The slack, or play between coasting and accelerating has gotten so bad that I can't go on a slight down hill grade with the cruse on cause it starts to hammer between coasting and accelerating, like there is too much slack in the drive train. The U-Joints look very solid.
Has anyone else having this problem? And if so, was it the trans, transfercase, or the rear end?
Thanks,
Matt

Last edited by Purplehazeir; 01-02-2012 at 09:39 PM.
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Old 12-30-2011
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I've heard that the drive line splines can get really dry and need to be greased. Use Fords Motorcraft "PTFE Lubricant" if you decide to grease them up.
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Old 12-31-2011
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Most likely just the wear and tear from the mileage.
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