Do bad U-joints clunk?
A bad u-joint can cause a clunking sound or jerkiness while driving, particularly when letting off of and pressing the accelerator. Then, shift into drive. If the vehicle makes a clunking sound, or you can feel it knock one time after engagement, a u-joint is likely the culprit.
Can a bad U-joint cause a clunking sound?
A bad u-joint can cause a clunking sound or jerkiness while driving, particularly when letting off of and pressing the accelerator. A bad u-joint can also cause vibration at certain speeds, emanating from the center or rear of the vehicle. If a u-joint is excessively worn, there’s an easy test you can perform.
What’s the difference between a thud and a thunk?
Since both of the above shortcomings (not overgreased, not moly grease) are likely at your typical shop, it is likely that your thud may still be The Infamous Thud. Rear driveshaft slip (spline) joint must be OVERgreased until grease spooges past seal using MOLY grease.
What does an U-joint do in a car?
A u-joint allows for slight positions changed between the driveshaft, transmission, and differential. In other words; the driveshaft connects the transmission to the differential, but it can’t be a static, solid connection.
How do you know if your truck has a clunk or thunk?
Turn it by hand. Hard. A *normal* one will have some slack. If you can flop the wheel back and forth, then you know something’s up in the driveline. If you get under the truck (with jack stand in place) and get someone else to move the wheel, you might be able to isolate where the clunk comes from.
A bad u-joint can cause a clunking sound or jerkiness while driving, particularly when letting off of and pressing the accelerator. A bad u-joint can also cause vibration at certain speeds, emanating from the center or rear of the vehicle. If a u-joint is excessively worn, there’s an easy test you can perform.
Since both of the above shortcomings (not overgreased, not moly grease) are likely at your typical shop, it is likely that your thud may still be The Infamous Thud. Rear driveshaft slip (spline) joint must be OVERgreased until grease spooges past seal using MOLY grease.
A u-joint allows for slight positions changed between the driveshaft, transmission, and differential. In other words; the driveshaft connects the transmission to the differential, but it can’t be a static, solid connection.
Turn it by hand. Hard. A *normal* one will have some slack. If you can flop the wheel back and forth, then you know something’s up in the driveline. If you get under the truck (with jack stand in place) and get someone else to move the wheel, you might be able to isolate where the clunk comes from.