Thread: Vibration when coasting only.

front drive shaft dc joint perhaps

x2 the DC and also the rotoflex in the rear and the shafts in general eg bolts, slip joint weights, dents. I'd also look at the bushes between the axles and the radius arms which may be allowing greater rotation than normal which might induce vibrations. Also the wheels for dirt, weights shifting and loosened nuts.

Not chunks of mud stuck to inside of rims

Also check tyres,my work van had vibration when coasting,at speeds over 60K,no vibration when on accelerator.

A rear tyre was the issue.

Another for checking the front shaft, including for spline wear.

My first car was a Jeep and the splines were flogged on the front shaft.
It would only really have a bad vibe on coast, it wasn't too bad under power
It's a similar feeling to a flogged DC joint.

Thanks to all the replies!

Greased front and rear shafts at splines and cardon joints, vibration now gone!

Now i’m concerned about premature wear which maybe have been done due to them being dry. Whoops.

Last greased maybe 20 000km ago.

Originally Posted by str405

Thanks to all the replies!

Greased front and rear shafts at splines and cardon joints, vibration now gone!

Now i’m concerned about premature wear which maybe have been done due to them being dry. Whoops.

Last greased maybe 20 000km ago.

Righto, I'd be grabbing the shaft very firmly with both hands and giving it a tug.

Double entendre aside, we're checking for play anywhere, so a hand either side of the DC joint and either side of the spline, our feel is pretty sensitive and will pick the tiniest amount of play.

I had similiar symptoms. It was the rubber drive joint at the rear diff. (Rotorflex?). New cost approx $70. Easy to change. One bolt was slightly loose but when I tried to tighten it I discovered the rubber was cracked.