Clunk noise while changing gear

[91eson318is]

when im not pressing on the clutch on idle i hear clunk nice and the car is vibrating. Is this a tranny issue?

I have the EXACT same problem in my E46 330ci...
When i get to the bottom of it, i'll let you know what my verdict was.

EDIT: the clunking is only when the clutch is out at idling RPM. Nothing when the clutch is in or at higher RPMs.

[RainierHooker]

I have the EXACT same problem in my E46 330ci...
When i get to the bottom of it, i'll let you know what my verdict was.

EDIT: the clunking is only when the clutch is out at idling RPM. Nothing when the clutch is in or at higher RPMs.

Prob throwout bearing...

[Naplm00]

Had this issue, was my exhaust

[91eson318is]

Prob throwout bearing...

that's what i've been thinking... but my clutch never slips and seems like it's in fine shape.

[Wh33lhop]

Prob throwout bearing...

that's what i've been thinking... but my clutch never slips and seems like it's in fine shape.

What are you guys on? Throwout bearings are only used when you're depressing the clutch pedal. If you press the clutch in and THEN it makes the noise, and never otherwise, then it's your TOB. A bad throwout bearing won't make your clutch slip or feel "crappy" in general. It'll just make bearing noise.

If you're in neutral, and it only makes a bearing noise with the clutch out it's probably your input shaft bearing (or possibly your pilot bearing). Getrag 260s have a natural tendency to just rattle in neutral with the clutch out, presumably because of input shaft bearing design. But it's normal.

[ForcedFirebird]

^^^ yup, specially with a lopy motor.

[91eson318is]

What are you guys on? Throwout bearings are only used when you're depressing the clutch pedal. If you press the clutch in and THEN it makes the noise, and never otherwise, then it's your TOB. A bad throwout bearing won't make your clutch slip or feel "crappy" in general. It'll just make bearing noise.

If you're in neutral, and it only makes a bearing noise with the clutch out it's probably your input shaft bearing (or possibly your pilot bearing). Getrag 260s have a natural tendency to just rattle in neutral with the clutch out, presumably because of input shaft bearing design. But it's normal.

I always thought that a bad TOB meant a new clutch in the near future too.. I guess you learn something new everyday. Thanks.

[graphikg]

What do you mean loose diff? Could you explain some more? It is quite intriguing. I would like to know what to check before I go balls out into a rear end refresh.

Basically, there are 4 bolts that bolt the diff to the subframe, and I found the diff slapping around in the car because 2 bolts were completely gone, and 1 was right about to jump out. Once bolted up, it was back to normal.

[T Verdier]

Mine has some "play" in the drivetrain that clunks when cold. I have a bad driveshaft I will see if that's the main reason.

[HarryPotter]

Mine has some "play" in the drivetrain that clunks when cold. I have a bad driveshaft I will see if that's the main reason.

How much play? Mine had the slightest bit in it. I do believe my problem still lies within the subframe bushings. Once they are replaced and I still hear a clunk the car will then be drivien off a cliff.

[T Verdier]

How much play? Mine had the slightest bit in it. I do believe my problem still lies within the subframe bushings. Once they are replaced and I still hear a clunk the car will then be drivien off a cliff.

Very little. I can make it clunk by putting the clutch in, like the load is released and it clunks.
FYI my suspension is pretty much all new. So I know it's not that for me.

[ak-]

I went to Alexandria and Cairo. I didn't see ONE damn BMW there nonetheless an E30.
I stayed there for a week.

[karimMsalama]

I went to Alexandria and Cairo. I didn't see ONE damn BMW there nonetheless an E30.
I stayed there for a week.

NO man their are a lot of E30 in Egypt but most of them appear at night only

[Fidhle007]

I always thought that a bad TOB meant a new clutch in the near future too.. I guess you learn something new everyday. Thanks.

It does. A bad throwout bearing will eventually make it impossible to disengage the clutch and could cause damage to the pressure plate. Sure you could probably just change a throwout bearing but seeing as you have to remove the transmission to do so it would be completely moronic to not change the clutch too. Chances are, if your bearing is bad enough to make noise it's already started fucking up the pressure plate...

I went to Alexandria and Cairo. I didn't see ONE damn BMW there nonetheless an E30.
I stayed there for a week.

NO man their are a lot of E30 in Egypt but most of them appear at night only

Two A+ helpful posts there! Are you guys high or something?

[z31maniac]

I'm assuming my driveshaft is toasted to. Get a bit of a clunk on less-than-smooth gearchanges. And it has a good diff bushing and subframe mounts/RTABs with only 2k miles on them.

Shittay.