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replaced u joint tuesday and now have vibration
tuesday night i replaced a horribly worn u joint on the rear of my rear driveshaft (differential side) and now have a pretty bad vibration, i followed instructions according to the haynes manual, marking the position of driveshaft mounting to the yoke, and replacing it to the same position. the replacement was pretty strait forward ( i thought). and now i have a strong vibration at 65 - 70 mph that is deffinatly coming from the rear. i jacked the rear of the trick off the ground and put it in drive to look at the drive shaft and it is certainly not turning straight. i have the u joint in evenly in all four sockets (the clip is seated in the groove on all of them) so i am assuming that the joint is centered. what else can i check, could it be tha u joint??
truck is a 2000 f150 4x4 9.75 rear
thanks for any help
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