GamblySmurf
NAXJA Forum User
- Location
- Denver, CO
Hello, and thanks for reading this post.
I have a 2001 Cherokee with 3.5" Rubicon Express lift, 32" tires, 4.56 gears, aftermarket control arms, Rock Hard 4x4 rear bumper/tire carrier, SYE kit, cv driveshaft, and rear axle shims.
Before the SYE kit and axle shims, it had a bad vibration from the drivetrain at almost any speed. With SYE and shims, it is smooth as glass through around 67 MPH. At around 70 MPH, a vibration appears like flipping a switch. The vibration is worse if I am on the throttle, but it is still there even if I take my foot off the throttle, as long as the speed is above 70.
It is an almost resonant vibration, it sounds like it could be tire noise, but it really comes and goes like flipping a switch at around 70 MPH.
What could it be?
I have a 2001 Cherokee with 3.5" Rubicon Express lift, 32" tires, 4.56 gears, aftermarket control arms, Rock Hard 4x4 rear bumper/tire carrier, SYE kit, cv driveshaft, and rear axle shims.
Before the SYE kit and axle shims, it had a bad vibration from the drivetrain at almost any speed. With SYE and shims, it is smooth as glass through around 67 MPH. At around 70 MPH, a vibration appears like flipping a switch. The vibration is worse if I am on the throttle, but it is still there even if I take my foot off the throttle, as long as the speed is above 70.
It is an almost resonant vibration, it sounds like it could be tire noise, but it really comes and goes like flipping a switch at around 70 MPH.
What could it be?