Hey guys,
I decided to buy a lifted LX450 this week and after getting up to highway speeds there was a grinding noise only above 60 mph that seemed to come from the differential or drive shaft. It felt like a vibration and would cut in and out. The dealer is now trying to suggest fixes and I feel it is caused by the 4.5-inch lift since the drive angles are pretty severe. There could be a problem with u-joints and I am wondering what is needed such as dc driveshaft or castor correction.
Please give any input on what the noise could be and how we can facilitate a healthy lift, thanks in advance to you guys!
I decided to buy a lifted LX450 this week and after getting up to highway speeds there was a grinding noise only above 60 mph that seemed to come from the differential or drive shaft. It felt like a vibration and would cut in and out. The dealer is now trying to suggest fixes and I feel it is caused by the 4.5-inch lift since the drive angles are pretty severe. There could be a problem with u-joints and I am wondering what is needed such as dc driveshaft or castor correction.
Please give any input on what the noise could be and how we can facilitate a healthy lift, thanks in advance to you guys!