Peugeot 306 violent shake on acceleration

engine mounts maybe, take a look at the driveshaft while it is spinning, a faulty cv joint can cause this sort of problem

If it's actually shimmying then there's run out in the hub, but normally it's just an optical illusion from the tyre pattern, It's more likely to be a driveshaft .

Many thanks, I couldn't feel any play in the engine mounts and it doesn't seem to move too much when taking up drive - but I'm not going to discount it at this stage.

I will take a look at the driveshafts tomorrow when I repeat the test

- is there anything that can be testing statically (play in the CV etc)?

Cheers, Mark

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You could well be right that it's an optical illusion. I'm tempted to get a dial gauge to check anyway (unless there's a method to do this without one).

Cheers, Mark

te:

Thinking about it, could I have runout on the hub and not feel vibration when braking?

Cheers, Mark

I had vibration on braking, but not on acceleration (also on a 306 1.9TD). After changing discs twice I eventually discovered a small burr on the edge of the hub flange, which I think was probably caused by a local garage weilding a hammer when renewing the wheel bearings. A second or two with an angle grinder completely cured the problem.

It might be worth examining your hubs for anything similar.

Peter

Thanks Peter, good idea. I've not done anything on the discs/hubs for a while so whilst it's unlikely to be this, I am tempted to strip everything down and see what is what. Cheers, Mark

Well if you've not kerbed the wheels then you can see the gap between the tip of a screwdriver held on an axle stand & the wheel rim, if it varies then something's bent enough to need fixing, if you can't see anything then a cheap dial guage & stand are the way to go, but if the spare wheel is the same then it's the hub. & that's really unlikely, they do sometimes bend/warp/develop burrs but some people win the lottery.

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=A0

Thanks Duncan, why didn't I think of that!

So, I did as you suggested and there is minimal to no variation. I took a closer look at the driveshafts and there's nothing noticeable wrong, but both inner and outer CV gaiters are split and there seems to be a little play in the joints, so perhaps I'll start here. It doesn't seem to be a huge task to swap this out, once I can get the outer CV nut off!

Cheers, Mark

Your post says 'violent shake on acceleration'. This implies that the shake is only there when you put your foot down, not when you are idling along, at 40 - 50. Is this a correct interpretation? If so, I found years ago this issue with my old Merc and it turned out to be universal joint in the propshaft (made of rubberised material) had perished and was giving way slightly under load, causing the shaft to move slightly out of line and vibrate. It was fine when you stopped accelerating even if you kept the same speed. Obviously, this specific problem is not yours, but maybe it's something similar.

Rob Graham

Hi Rob,

Very good point - I should be more precise with my posts :)

The shake does remain when idling along at around 40-50.

I've taken the OSF driveshaft from the car, but unfortunately my local breakers didn't have one for me (probably a good thing), so I'll pop into GSF tomorrow to see what they have and then hopefully I can lay this to rest.

Cheers, Mark

Hi all,

Just wanted to say many thanks for your help!

GSF didn't stock the OSF driveshaft, but fortunately EuroCarParts had one in Swindon ... a bit more of a drive, but at least it is now installed and everything is fine once again. I look forward to EuroCarParts opening their Gloucester store!

Thanks again, Mark

I am pleased it is fixed, and even more pleased to hear the outcome, about

99 per cent of questions asked on here never come back and say what the problem actually was !!!