Vibration under load worse at slow speed.

Nodge68 · Sep 24, 2013

After fixing the Balance Motor over the weekend a new fault has become evident. There is a wheel speed related vibration which can be felt through the floor and steering wheel. I think I first noticed it last week just after I pulled out of a junction a bit sharpish, this resulted in lots of wheel spin (props removed for maintenance).
The vibration is similar to that felt on the 1.8 Freelander when the inboard CV joints are shot. I'm thinking that maybe the CV joints are shot but as the car has only done 35K miles failed joints are premature?
Any ideas welcome.

Nodge68 · Sep 28, 2013

Today I changed the offside driveshaft as its inboard joint was loose, probably loss of the grease was the cause.
The sad part is the vibration is still there. It's hard to describe but it's like clutch judder on a manual box, or a misfire only much heavier.
The frequency of this vibration or Judder remains constant regardless of engine speed or road speed, however the judder is most evident at slower speeds and gets less harsh as the box changes up the gears.
I'm thinking that maybe there is something in the box causing this. I'm not that up on autos and only have a basic understanding of the inner workings.
The fluid is at the correct level and is clean. Any help on this would be good as i'm out of ideas.

AKeeNShoT · Sep 29, 2013

Ird out bearings. I've read a few times on here that the cheaps shafts also vibrate.

JRNORWAY · Sep 29, 2013

How are your tires? Mine had this annoying vibation with my winter tires. Could even feel it on the steering wheel. It was like a new car when i got my summer tires on this summer.

Nodge68 · Sep 30, 2013

AKeeNShoT said:
Ird out bearings. I've read a few times on here that the cheaps shafts also vibrate.

I changed the factory drive shaft as the inboard joint was dry and very loose. The new shaft although cheap, looks and feels good, but made no difference to the vibration.

Nodge68 · Sep 30, 2013

JRNORWAY said:
How are your tires? Mine had this annoying vibation with my winter tires. Could even feel it on the steering wheel. It was like a new car when i got my summer tires on this summer.

Tyres are all Yokohama Geolanders with under 1500 miles. It's also in 2wd mode at the moment.

Freelaner · Sep 30, 2013

damper springs in the torque convertor??????

this video explains the function of the TC very well

http://www.youtube.com/watch?v=hhwYIs6Lu3M

Nodge68 · Sep 30, 2013

Freelaner said:
damper springs in the torque convertor??????

this video explains the function of the TC very well

Torque Converter Movie - YouTube

Are there damper springs in the TC? That would be a fast vibration as the TC is connected to the engine. This is a slow vibration at around wheel speed. At 30mph it's around 3 vibrations a second.
This is why I suspected the inner CV joint that had lost its grease.

Freelaner · Sep 30, 2013

Nodge68 said:
Are there damper springs in the TC? That would be a fast vibration as the TC is connected to the engine. This is a slow vibration at around wheel speed. At 30mph it's around 3 vibrations a second.
This is why I suspected the inner CV joint that had lost its grease.

no not necessarily it would depend on the internal speed of the torque convertor but it's just a guess

as i don't fully understand the inner workings

Nodge68 · Oct 1, 2013

I've been trying to get a better idea of what is going on and what makes this vibration better or worse. I've found that at a reasonably constant speed and load, the vibration gets worse if I turn right, driving straight produces les vibration than turning right. Turning left pretty much eliminates it all together. Having already swapped the right hand drive shaft for an EBay £50 special and noting no difference in the vibration at all, I'm wondering if the left hand drive shaft could be causing this vibration.

Vibration under load worse at slow speed.

Nodge68

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AKeeNShoT

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