I would hazard a guess at the flywheel, clutch release bearings tend to whine as opposed to knock.

Does it judder as you pull off?

 

no there's no juddering at all, had a drive in it and i would say it felt smoother than my bora! gearbox felt good, clutch bit well. if it is the flywheel would that be an expensive repair?

 

If you cant do it yourself, yes! A new flywheel would also be expensive, and youd be stupid to not change the clutch whilst in there.

 

hmm yeah it doesnt sound like something cheap!! well i'll have another listen to it tonight. And yes you're right, if i got it changed i'd want an uprated clutch installed to prepare for future upgrades []

 

its around ?600/700 for a pattern one fitted........Flywheel/clutch and release bearing.

You can upgrade the clutch as much as you like, but its the flywheel thats the weak part of the design.

 

Just fitted new clutch , slave cylinder ( with bearing complete ) and dual mass flywheel to my PD150 .

Got all the parts for ?350 from eurocarparts .

MIne has a rattling noise every so often from gearbox area when cold and on tickover , but goes when warm...as i have changes flywheel etc i have learnt to live with it as cannot be anything untoward.....been like this since had the car 14 months back and has not changed after 20000 miles.

Seems to be something inside box that causes it but goes when warm .

Karl

 

Thanks for the replies guys, doesnt sound like a cheap one. The car would be from an independant garage, and i've said it must go to VW for a check with a written report and it will be pretty evident if they have repaired it or not. if not then i'll walk away.

on another theme something on the clutch pedal assembly in my bora snapped last night so now its out of action! and i though i didnt have to worry about that car.....

 

You need a clutch pedal, common problem! Its a small bit on the pedal that pushes on the rod that goes through the bulk head- it snaps off, build fault- although the new pedal aint no different! Still, they last a good while before they break!

Cheap enough from the dealers, sure its about ?25 including a plastic bit that'll have broken aswell.

Maybe 2 hours maximum labour, its a bit fiddly!

As for the Golf, sounds like a plan! []

 

yeah thats it, thats exactly what broke! looks like a rubbish design...

Hopefully the Golf is good idea! After having a drive in a pd150 i can certainly say I'd like one, and I got quoted cheaper insurance than my Bora?!! BUT VW have alledgedly found nothing wrong with this knocking noise and 'couldn't hear it'... sounds suspicious to me I don't want to get fobbed off with something thats going to need hundreds of pounds worth of work doing on it straight away when i'm sure there are examples around that don't do it!

 

That would be the same design as the Leon then ..... mine does it too, rattles from idle, sounds like a knocking noise ( already had the DMF replaced along with the clutch) and the noise goes when you raise RPM a couple of hundred and also once the car is warm.

Don't suppose you've got a picture of the dead bit?

 

Hmm yeah its the same with raising the RPM. I dont have a pic of any 'parts' but as you're looking at the car straight on the noise clearly comes from the bottom right of the engine where the flywheel and clutch is. the noise is intermittent. Is it usual for the 150 engine to shake around a lot at idle?? i compared it to my 115 (which sits almost still) and the 150 was moving around loads!!

 

Mines done it since about 20k, got 49k on it now, got worse when I fitted an uprated clutch 13k ago but only when the car is cold really, goes away with revs. Wondered actually if its the vacuum pump?

 

It's an odd sound and it's not constant even at cold ... seems to come and go in cycles - like a dull clunking but it never changes in pitch .... then as soon as you blip the throttle or depress the clutch it's gone. I'm actually going to try just resting my foot on the clutch and see if that stops it. That should prove whether it's pedal or something more 'expensive'.

 

yeah it is intermittent at cold, like you say, almost in cycles. I would suggest it isnt the pedal as the pedal on my bora broke the other day and it's a failure on the pedal itself. It does sound expensive, but from what you say if you've replaced essentially the whole assembly of dmf and clutch then who knows![:S] I think considering i was only going to buy the car and they have failed to identify and mend the fault i will take the opportunity to get my deposit back and leave it. which is very annoying!!

 

If the engine moves about a bit on idle - could your knocking be an engine mount?

 

it could be the mounts, given that other people seem to have experienced exactly the same thing im not sure. what worries me most is that the car has gone to the stealers who should be able to locate this problem, and they didnt.......

 

I have been to look at the car again after the alleged vw inspection and it is still just as bad, wasn't at first but really got going after 5 mins idling. The engine really moves about and is directly related to the noise - no noise = engine looking normal. I have searched the forums extensively for any info on this, there is mention of a recall for the ECU as a fix, or some wiring that goes in the engine to do with the injectors?? sorry i am not very mechanially minded!

 

Had the same noise on mine, it was more noticeable after fitting an uprated clutch. The noise would disappear when the clutch was depressed.

Took my car to Midland VW who diagnosed it as a knackered DMF, booked the car in and had a new one fitted. It 100% cured the noise and it has not returned in 10k miles...

 

The engine really moves about and is directly related to the noise - no noise = engine looking normal.

there is mention of a recall for the ECU as a fix, or some wiring that goes in the engine to do with the injectors??

To me that sounds like its a missfire at tickover, causing the lumpyness which could vibrate the release bearing then causing a rattle!?!

Are the revs dropping very slightly after those 5 minutes, whan it starts to make the noise/ shake around?

Would be understandable with the re-call........

 

thanks for the replies guys, my first feeling was the DMF because of the noise, but its so hard to tell! I've told the garage I certainly won't buy it when it's making the noise and they won't be able to sell while it is doing it, but the stealers are so useless!! 'Express Visual Check'  - oh come on, they said they 'saw nothing' and i swear you'd need to be dead not to notice it! i'll try and get them to sort it, because obviously if it is replaced, it (shouldn't) need doing again for a fair while. I await their next move!

 

i mentioned about a recall, does anyone know anything about it?? i cant seem to find anything! this whole 'cold idle' problem seems like its quite common on the 150 unit

 

I have a 130 TDi and has done the self same thing for about 20k slight rattle whilst the clutch is up goes away when depressed, however this last week the noise has got really bad and doesnt go away when the clutch is depressed but does go away when the engine warms up so im thinking...... DMF? Engine Mount? Heat shield on exhaust? im clueless i took it into the clutch garage and even the guy there says if its DMF the noise should not be intermittent it should be constant which does make sense i guess although not being a mechanic i dont know [] any input appreciated

 

Its the release bearing....

 

Hi All, I am new to here but had to reply with my experience on this issue.

I have the 130hp PD TDI and i have the same knocking from the right hand side of the gearbox end on idle. It does it when the engine is cold and hot, but its intermittent. Noise will stop when you raise the idle just slightly or press clutch down. My golf has done 202000 miles and still drives very well, goes through all the gears ok and is smooth. Clutch operation is normal.

Its definitely NOT the DMF or clutch / bearing as i had all these done very recently and the noise is still there no worse / no better. Theres nothing about this issue online really.

While i do have the intermittent knocking from the gearbox the engine shakes like mad as described by another user on here and its not a missfire!.

It seems to be coming from the opposite end of the gearbox behind the drive shaft. The drive shaft itself is all good as i have had that checked. The knocking is coming from inside the gearbox.

Im no expert but to be im thinking there is some sort of main gearbox bearing that is worn. A gearbox recon i think would solve this but on the millage i have i cant warrant spending that sort of cash.

I think its something i will live with as its not getting any worse.

If anyone has any more info on this it would be great to know.