Hi again. I'm still looking for that #$^@ vibration in my car. Today I took out the drive shaft so I can replace U-joints & have the drive shaft balanced.
With the driveshaft out I noticed I can move the splined shaft sticking out the rear of the trannyup & down. Is it normal to have play in that shaft or should it be pretty solid?
Can I put the car in gear and run it to see if it still vibrates with the drive shaft outor is that a bad idea?

 

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