tumbling/viabrating at 3500-4000rpm

[pcproa]

@DJPyro

U-joints aren’t hard, unbolt the driveshaft from the transmission and the diff, and you should be able to unbolt the U-joints and bolt the new ones on. Check Crappy Tire, Napa, places like that. I’ve never personally changed the U-joints on a 240, but I’ve replaced them on a few other vehicles, and they’ve never been hard to do. It’s just a few bolts, and it involves crawling under your car.

As far as I can remember, Nissan (and most import car manufacturer) driveshaft u-joints cannot be unbolted if they are from the factory. You must press the u-joint out and the aftermarket unit you purchase usually bolts in.