Occasional driveline shudder when taking off

[robfg67]

Does anyone have any suggestions or possible causes? It usually happens on start-up and it sends vibrations throughout the truck. If I give her a little more throttle it will smooth-out. I have no other driveline symptoms or issues.

[tjbliley]

Check the motor mounts/tranny mounts, as well as the U-joins in the drive line. That would be my first placed to look.

[robfg67]

TJ, all u-joints have been replaced in the past 9 months or so. What would be an indicator of a bad mount look like?

[tjbliley]

Visual inspection when putting it in gear and looking for movement. the torque of the motor will apply pressur on these and then once the movement is tranferred to the axles the drivetrain kinda settles in. the movement will cause the noise due to binding. Also if it is a manual then it could just be the clutch trying to tell you it needs to be replaced. If it is an auto then it could be the torque convertor or an internal tranny issue. mounts are easy to check by having someone put it into and out of gear and visualize them for too much movement. The other problems could take more in depth means to find.

[HKB3]

stick or auto?

[robfg67]

5-speed stick

[shelbyluvv]

Sounds like clutch chatter to me. Does your rear main leak or has it since this clutch disk has been in the truck? If so than you have probably scored the disk, pressure plate, and fly wheel.

[FxRacing282]

sounds like a cold motor or a bad clutch

[robfg67]

Yes, the RMS does leak. However, the clutch pedal feel has not changed at all, it shifts smoothly into all gears, & never pops out of gear. There are no odd smells or noises-just the shudder/vibration.

[HKB3]

Sounds like clutch chatter to me. Does your rear main leak or has it since this clutch disk has been in the truck? If so than you have probably scored the disk, pressure plate, and fly wheel.

 

:agree:

[carnuck]

The yoke nut on my D35 came loose and caused this feeling. Fix now or be prepared to get a new diff!