Megane 225 acceleration vibration issue....

Ol’ Tarby · Mar 28, 2017

Asking this for my mate who bought my megane off me....

He's had it for a month or so issue free, however it's developed a strange vibration on acceleration. I drove it on Sunday and it's perfectly fine until it comes on boost. At which point it vibrates/wobbles really badly. It's quite violent to be honest. It feels proper broken! I can't for the life of me think of what it could be.

The facts...

Performance is unaffected.
Idle has become lumpy.
Only does it on boost.
More noticeable in lower gears.
At steady speed it seems normal.
No smoke.
No fault codes.

Now, I've experienced a failing driveshaft or a failed DMF. These are the only two things I can think it might be.

Any thoughts?

Daniel · Mar 28, 2017

Tell him it's sold as seen and to delete your number?

Sounds like driveshaft/s though.

Louis · Mar 28, 2017

Did you leave the Mrs' vibrator under the seat?

imprezaworks · Mar 29, 2017

Louis' said:
Did you leave your vibrator under the seat?

Ol’ Tarby · Mar 29, 2017

Daniel said:
Tell him it's sold as seen and to delete your number?

Sounds like driveshaft/s though.

He's my best mate. He doesn't want anything from me, I'm just trying to help him diagnose it as it's completely stumped me

Louis' said:
Did you leave the Mrs' vibrator under the seat?

c**t x

c**t x

bashracing · Mar 29, 2017

With it effecting the idle, I would guess at dual mass flywheel is on its way out.

JB21 · Mar 29, 2017

As mentioned driveshaft(s) or DMF, if the latter you can normally hear it rattling at idle.

@james24785 are you back in the Clio then?

jamesycc · Mar 29, 2017

Builds speed, more vibration. Something rotary I would imagine.

As mentioned, dmf, driveshaft, clutch bearing, hub bearings, swivel joint??

Not engine obviously if its boosting ok.

incy-spider · Mar 29, 2017

Could be as simple as the top engine mount collapsed, get that a lot. Not so sure if it would be more noticeable on boost though...

imprezaworks · Mar 29, 2017

Sounds like you got rid at the right time

Hope you sort it

Ol’ Tarby · Mar 29, 2017

incy-spider said:
Could be as simple as the top engine mount collapsed, get that a lot. Not so sure if it would be more noticeable on boost though...

It's got a powerflex top mount mate so think we can rule that out.

I say it's lumpy on idle, but it could be how it's always been to be fair. There's no noises on idle or when cruising. It's literally as soon as you put your foot down and boost builds, you get a horrible rumble/vibration

Ol’ Tarby · Mar 29, 2017

JB21 said:
As mentioned driveshaft(s) or DMF, if the latter you can normally hear it rattling at idle.

@james24785 are you back in the Clio then?

No mate the Clio went to the same mate. He then sold it and bought my megane

JamesBryan · Mar 29, 2017

Dual mass flywheel are w**k on these.

incy-spider · Mar 29, 2017

james24785 said:
It's got a powerflex top mount mate so think we can rule that out.

I say it's lumpy on idle, but it could be how it's always been to be fair. There's no noises on idle or when cruising. It's literally as soon as you put your foot down and boost builds, you get a horrible rumble/vibration

Ah, okay... just thinking of things that haven't been mentioned and easy to check. Another one I had once was exhaust touching underneath when accelerating, horrendous vibrations and rumbling! Worth a check

Ol’ Tarby · Mar 29, 2017

I think this is one of those unable to diagnose over the internet kind of things

Louis · Mar 29, 2017

I think i was pretty close.

Ol’ Tarby · Mar 29, 2017

Louis' said:
I think i was pretty close.

Probably the best suggestion in here tbh mate

incy-spider · Mar 29, 2017

james24785 said:
I think this is one of those unable to diagnose over the internet kind of things

You never know!

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Megane 225 acceleration vibration issue....

Ol’ Tarby

Daniel

Louis

I Park Like a C**t

imprezaworks

Ol’ Tarby

bashracing

JB21

jamesycc

incy-spider

imprezaworks

Ol’ Tarby

Ol’ Tarby

JamesBryan

incy-spider

Ol’ Tarby

Louis

I Park Like a C**t

Ol’ Tarby

incy-spider

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