front end vibration at hwy speeds

[simjet22]

At 60mph and better my front end starts shaking and I feel it in the steering wheel..I had the tires replaced and all high speed balanced,all wheel alignment,upper and lower ball joints replaced,control arms,and sway bar links..while I had the truck in the air I was checking the front diff for any play and I have play at the drivers side..the axel by the diff is shaking, could this be my cause of vibration speeds? Am I looking at a new diff? I did hear clicking from The diff but it went away and didn't pay it any attention. What are the specs on the diff if I need to gt a replacement? BTW I have a 97 mounty AWD with 130k...

 

[safn1949]

I assume you mean the drive axle is loose on the differential end? As in bad CV joint,that would shake the daylights out of the truck at speed as it turns all the time.

can you post a photo pointing at the loose part?

 

[ThePhoenix]

did you check the wheel bearings? I had a shake at 65 that was unbearable...