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bmw e46 clutch juddering/ vibrating.

25
Found 3rd Dec 2014
Hello guys. I was just looking to see if anyone else has any advice for me.

I have a BMW e46 and lately I have found that sometimes when I release the clutch after changing gear the clutch will vibrate or judder. It usually happens when I take off but can sometimes happen when I'm going through other gears. The car has done 85 thousand miles and is an 05 plate. Does anyone know if the clutch is dying or if it could be something else?

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25 Comments
Sounds like the clutch is going.
My 5 series used to do that when in crawling traffic, it was a proper pain as I would have to let the car in front go off 100yds so I could fully release the clutch, never found the problem and the clutch wasn't slipping at all.
dual mass flywheel?
Probably clutch or clutch release bearing either way requires a new clutch.

Check driveshafts too, My intermediate driveshaft went recently and it felt like my clutch was on it's way.

Sounds like dual mass flywheel, get your prop shaft donut rubbers checked out too
bmwforums.info is a great place for tech advice

but as mentioned clutch could be going after that mileage
Original Poster
I've looked at loads of forums including that one.. no one is having problem in other gears, just first gear when taking off
Original Poster
thanks everyone I will get those things checked
Could be the clutch itself is contaminated with oil from a leaking rear crankshaft oil seal. You can try slipping the clutch quite hard to temporarily burn the oil off the friction plate, if the action of the clutch then improves for a while you've most likely found the culprit.
Take it straight to a garage. If sounds like your clutch or flywheel. If either disintegrate, you could well knacker the gearbox. My advice is sort it out while it's like this, much cheaper to fix one thing that 2 or three.
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Sounds expensive
andymagic

Could be the clutch itself is contaminated with oil from a leaking rear … Could be the clutch itself is contaminated with oil from a leaking rear crankshaft oil seal. You can try slipping the clutch quite hard to temporarily burn the oil off the friction plate, if the action of the clutch then improves for a while you've most likely found the culprit.



This^^ What you've described is a classic symptom of contamination on the clutch plate
Original Poster
I took it to my local garage who said there was nothing wrong with the clutch or flywheel. He also checked the other things and said the car was fine, he said a little judder is normal sometimes because of the weather, although I'm sure this is incorrect
Original Poster
moob

This^^ What you've described is a classic symptom of contamination on the … This^^ What you've described is a classic symptom of contamination on the clutch plate



hello, what do you mean by slipping the clutch hard? I will try to do this tomorrow
cl505

hello, what do you mean by slipping the clutch hard? I will try to do … hello, what do you mean by slipping the clutch hard? I will try to do this tomorrow



With the car moving along at 30 to 40 in 3rd gear, dip the clutch, bring the revs up and release the clutch partially whilst maintaining the higher rpm, only for a few seconds, it should be plenty to dry the clutch plate off.

Obviously you need to do this out of the way of other traffic/people and only in a straight line, not whilst turning.

I have a pickup truck I only use occasionally and if it has been stood for a month or so in the cold weather the clutch can judder when pulling away, a quick slip as above to get some heat into it sorts it out a treat.

Edited by: "andymagic" 3rd Dec 2014
cl505

hello, what do you mean by slipping the clutch hard? I will try to do … hello, what do you mean by slipping the clutch hard? I will try to do this tomorrow



Does the judder ease once the car has warmed up? Most contaminated clutches will burn the contamination away after a short period unless it's leaking badly. Slipping the clutch might help diagnose the issue but probably won't help it.

In the long term all will probably result in having the clutch changed, If you have to have the crankshaft seal changed it involves removing the clutch, Gearbox etc... Lots of labour.

Sometimes when the crankshaft oil leaks you may have visible signs of a leak near the gearbox where it meats the engine.

Are all your tyres ok and wheel alignment, Sometimes they can cause some juddering, Not typically from your description.

Any juddering when engine just ticking over? If so does it still judder when the clutch is applied?

If juddering stops when clutch is applied then likely DMF at fault.
Unless I'm being blind, the OP didn't say if his car was Diesel or Petrol.
If petrol no DMF fitted.
If Diesel, sounds a perfect description of DMF on its way out. Been there, got the huge bill to prove it!
As above, the OP needs to give details if vehicle is a Petrol or Diesel, it does make a difference.

If its Diesel, then more likely it is the DMF.

You can pretty much tell when a 'clutch' starts to wear to the point of mechanical failure...
1. Jumps out of 1st and 3rd gear.
2. Clutch pedal bites near to the floor, pedal travel is effected.
3. Vehicle creeps forward even though you haven't fully released the clutch pedal.
4. Burning smell, release/thrust bearing FUBR...

When you get clutch vibration, this normally means DMF failure, some petrols do have DMF's but mostly diesels.
Original Poster
its a petrol car, the judder only happens when the car is warm, it doesn't happen when I start it and drive. I slip the clutch today to see if that made a difference but the juddering still continued
You sure it's on the clutch? Could be a misfire maybe? Could be a coil going faulty when its warm, quite a common fault. Would usually put the engine management light on though
If this happens just in early gears it is the clutch delay valve. It's sooo frustrating. I have an E46 320 coupe. You get used to it after a while. Or you can remove them.

Google 'E46 CDV'
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Google 'E46 CDV' you get used to after a while. Or they can be removed. I have an E46 coupe and it's really annoying till you get used to it. You do get used to it after a while.
Original Poster
yeah it mostly happens when going through the early gears, but sometimes can happen in gear 4. would removing cdv affect anything else about the car?
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