Slip and thud when accelerating and hard breaking

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Old 12-12-2018, 06:56 PM
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Slip and thud when accelerating and hard breaking

05 5.4 ex cab 6.5’ bed 74k miles. When accelerating, drive train has slack feels like drive shaft but no slack in u-joints. Hit the gas and it it thuds and take off. Feels exactly like splines May have slack but I’m stumped.. all other threads have to do with a “clunking noise” I don’t seem to have that. Thanks
 
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Old 12-12-2018, 07:19 PM
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glc
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Pull the driveshaft and lube the slip yoke with Teflon grease. Check the rear axle mounts.
 
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Old 12-13-2018, 08:26 AM
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Originally Posted by glc
Pull the driveshaft and lube the slip yoke with Teflon grease. Check the rear axle mounts.
will do, thanks!!
 



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