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driveshaft knocking - estimated time to failure?

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V62003

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Discussion starter · #1 ·
Hello everybody,

Last night I heard a first occurence of a knocking sound resembling a problem with the (an ever present problem, as I read) driveshaft bearing.

It happened on an uphill while under a bigger throttle than usual. Straight road and normal throttle produce nothing unusual. So far.

Since I need the car badly over the weekend, can I rely on it to work properly (meaning, not to leave me stranded) for the next 1000 km or so - with careful throttle usage?

What's the worst thing that can happen under the circumstances?

Thanks and BR.
 
#2 ·
if the carrier bearing let's go completely, meaning the rubber rips out completely, will be unbearable to drive. at some point, you will think the driveshaft will be coming up through the floorboard.
 
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#3 ·
Zero.

As above, you are an acceleration or three away from the car being undriveable so don't chance it.

Look up The JimI Fix (see post #15 below) or rearrange your weekend.

www.clubtouareg.com

Centre bearing failure

Looks like my '05 R5 has succumbed to the dreaded drive shaft centre bearing failure. Driving home from work tonight and what started out as a bit of a rumble from under the floor developed into a thump thump thump by the time I got home. Dammit. Will pull the drive shaft out in the morning and...
www.clubtouareg.com www.clubtouareg.com
 
Discussion starter · #8 ·
Thanks to everybody for the replies. Especially for the creativity involved. Special mention goes to Turbo's cougar experiences at country bars. Not one, but many. 😂

Here's what I did.

I did drive through the weekend and through 500 km, but in a retiree sunday-driver mode. Meaning, shift manually upwards at 2000 rpm, accelerate slowly and do not pass 80 kph mark. Still some deterioration was noticable - very subtle shudders noticeable only to a keen observer around 1500 rpm. Unlike the knocking noise that took place three times whilst in 3000 rpm acceleration - just to see if it happens regularly.

Tomorrow morning I'm having the driveshaft rebalanced and refurbished. It should cost no more than 200 EUR.

Thanks everyone for the replies and effort. I wouldn't have driven had I seen the replies. Unfortunately, this site did not forward the replies to my mail as it usually did so far.

And one more question - I did come across an information that some people modded they're treg with a shaft from a V10.

Is that a good/viable idea for a permanent solution?

Thanks again. Will let you know the outcome tomorrow.
 
Discussion starter · #12 ·
It's done.

The bearing was bad so they replaced it, balanced the driveshaft and put it back on the car.

Now all is fine. And way better than say, 15 kkm ago.

As for tell-tale signs of soon to fail driveshaft (if you're anticipating in thousands of km), I can mention "uneven" (as different from perfectly even) operation while under cruise control and slight jolts while setting the car in motion. Those are fine now.

Hope this gets googled and helps somebody.

Thanks everybody once again. Bigtime.
 
Discussion starter · #14 ·
Oh I did the vacuum lines 2 months ago. ;) And the brake booster was never a problem. I ordered a spare brake booster back then, tried it, figured out it's not about the brake booster. So I returned it and got a refund.

The only remaining item are the cooling hoses. I haven't seen a leak in the last, in summer heat driven, 10 000 kms so there's a distinct possibility it's not going to happen at all.

If leaks are about to happen, that's what 5 liters of distilled water are in the boot for. The entire time. :)

I hope this should last long enough for a timing chain change (now the 208 & 209 vcds blocks are at 5 and 6 degrees), so all is done in one shot - leaks, chains, hoses and crankshaft seals.

It is a never ending story. But I love that car anyway. :)
 
#15 ·
Just replaced a leaking coolant hose. Got one from a Cayenne. Previous owner used tap water so the hose was swollen and the clamp was crumbling. Had to put coolant every now and then. Now problem fixed. And I replaced the egr (combi valve it’s called for the 3.2) too. That hose and the combi valve use the same connection to the engine.


Sent from my iPhone using Tapatalk
 
#19 ·
V62003 said:
Hello everybody,

Last night I heard a first occurence of a knocking sound resembling a problem with the (an ever present problem, as I read) driveshaft bearing.

It happened on an uphill while under a bigger throttle than usual. Straight road and normal throttle produce nothing unusual. So far.

Since I need the car badly over the weekend, can I rely on it to work properly (meaning, not to leave me stranded) for the next 1000 km or so - with careful throttle usage?

What's the worst thing that can happen under the circumstances?

Thanks and BR.
Click to expand...
BR,
Just had this happen a month ago to my 2010 TDI. From 1st knock to "what sounded like it was coming thru my center console, and I couldn't go over 30mph" was only 50 miles.

Matt
 
Discussion starter · #20 ·
mattzanotto said:
BR,
Just had this happen a month ago to my 2010 TDI. From 1st knock to "what sounded like it was coming thru my center console, and I couldn't go over 30mph" was only 50 miles.

Matt
Click to expand...
I think we all agree that the first knock signal is not a joke. Not even a "knock-knock" one. 😂

I was lucky with my 500 kms.

Maybe your 50 miles were due to your driving style?

Sure enough, it is a signal that the first direction you should take is the workshop.
 
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