Technical Sisley vibration in 4WD

[Rellinars]

I have a Sisley with 80k km for a few months and it works fine but there's a noticeable vibration when I get 50km/h or more when in four wheels drive. The vibration doesn't stop if I put neutral.
I do make some km every day in 4wd but at lower speed with no problems. Is this serious? It can be solved with few money?

 

[onemanmade]

Im not really sure on this one, but have you had the wheels balanced and tracked?

Sorry if this is a silly suggestion!

 

[Palio]

I have a Sisley with 80k km for a few months and it works fine but there's a noticeable vibration when I get 50km/h or more when in four wheels drive. The vibration doesn't stop if I put neutral.
I do make some km every day in 4wd but at lower speed with no problems. Is this serious? It can be solved with few money?

That's too fast!

I don't have mine handy (he's down at Vernon's) to check the information plaque but I think the max is 45kph or just under 30mph?

I believe the transmission can also "wind up" if it's not used on slippery mud/snow etc, so a combination of driving on normal roads (you're not going to be on mud at that speed) & too fast, will give a warning vibration I'd have thought.

Slow down before you damage the 4wd :idea:

 

[AndyPanda4x4]

Possibly you may have an unbalanced prop shaft, or it may have become unbalanced. Check to see if there are any small weights that have dropped off, there may be a clean spot on the shaft where a weight has previously been

 

[Dragon Man]

it could be the prop shaft bearings that have become very slack. thankfully if you cover the old perished rubber in "tigerseal" it will fix it

also are all your tyre sizes the same size? if you was to have bigger ones on the back it would change the ratios and cause "skipping" as the wheels try to move at the same speed as the front ones.

 

[panda1408]

Unless it does it when in 2WD the prop will be fine, as it turns whenever the car is moving so you will get the vibration all the time.

As Palio says the 4WD should only be used under a certain speed, so using it at higher speeds is probably the issue.

 

[Rellinars]

thanks for all the replys I will follow your tips. In any case it's not a problem because I use 4WD at low speed but I just tested a 2001 Trekking than could run with the 4 wheels much faster

 

[Liquid Knight]

If feels faster because the torque is divided but in reality it's barely noticeable. The only time I used four wheel drive with my Pandas was when front wheel drive wasn't enough.

The new Panda 4x4 only engages four wheel drive when the front wheels lose grip. The difference in ratios between the front and rear axles would be enough to cause vibration on the road. If you want a P4 get an Alfa or Lancia.

 

[Most Easterly Pandas]

thanks for all the replys I will follow your tips. In any case it's not a problem because I use 4WD at low speed but I just tested a 2001 Trekking than could run with the 4 wheels much faster

It may be able to cope with it, but still isn't designed for it. Why are you feeling the need to abuse them in this way. Things go bang and bust when you have little or no mechanical empathy