12 replies to this topic

[Nick Warwick]

hi
recently i have been getting alot of bad juddering in 3rd and 4th gear when i start to accelerate, what causes this and how can i fix it?

its when i let of the accelerator and then push back on

cheers
ncik

[Ethel]

Depends,

Could be engine steady 'n mounts if it's more of a clunk, or it could be your clutch.

[Nick Warwick]

just had engine mount changed so wont be that, not the clutch , the juddering is happeneing when i try get speed and the speed takes ages to kick in if you get me

[Rhys]

Still sounds like slipping clutch to me, could be a problem with airflow as well, have you changed anything like that recently?

Rhys

[Nick Warwick]

maybe but from what i can tell its not the clutch as i dont even have to touch the clutch to make it start juddering its just as i accelerate from say 30mph in 3rd and 4th the car just jumps and judders forward feels like a back fire if you get me

[Rhys]

Is this when its warm and cool?

Rhys

[Nick Warwick]

cool, when the engines warm its fine but can occur at times

[minicooper1.3i]

I'm with Rhys on this one. Sounds like you've got a contaminated clutch plate, maybe from a faulty primary gear oil seal. My brothers suffererd from a lot of clutch judder after changing his clutch and seal (without using the proper tool).

I've also got a very similar problem on my scenic, which I'm thinking is the clutch too.

[Nick Warwick]

its so annoying because when u want speed it takes a while till you even get some, not the safest thing

[Ethel]

It is a hard one to diagnose without seeing the car. It could be an ignition (sticking advance) or fuel (lean out) issue but you'd expect it to happen in all gears. It could just not be noticeable in 2nd because it's a higher ratio.

The clutch still seems likely, the higher the gear the greater proportion of the car's mass the engine and clutch will see per revolution. Try slowly pressing the clutch next time it happens the clutch should disengage very easily if it is slipping.

Edited by Ethel, 10 June 2008 - 10:13 AM.

[minicooper1.3i]

The other way to check the clutch is to park up, put the hand brake on, put it in gear and slowly let the clutch out. If the clutch is fine then the engine will labour and eventually stall. If not, then the clutch will slip. If the juddering is worse when it's cold it 'could' be because if it's contaminated with oil and dust (from the clutch) then when it's cold the contamination is going to be 'slimey' and lumpy, but as it warms up then it will become more like an oil and slip more freely ie. less juddering.

Not pretending to be an expert on this, just speaking from personal experience. But do the test I've suggested above on a hot engine and see how hard the engine works to move the car.

Let us know how you get on

[Nick Warwick]

ok cheers guys will give these a go

[Nick Warwick]

i found the problem with the juddering it was the points had started to close up, my dad opened them up again and the car runs so smooth now, cheers for trying to help guys.