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Lone_Bullet

The automotive question thread

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Like the computer thread, but it has to have wheels 'n' stuff.

 

Got a '04 Audi A3 8P 1.9 TDI 105bhp version.

Had to replace the clutchpump, a year later the clutch and flywheel. Bummer.

Now it drives great but I noticed a 'dok dok' sound under these conditions :

- Clutch connected ( pedal not pressed)

- Speed greater than 60km/h or 40m/h

- Accelerating ( either by throttle pedal or cruise control)

So only when 3 of these conditions meet.

Anyone has an idea?

I was thinking something turning out of ballance. Like a bad ball bearing or so, but Inhear no screeching.

 

Sent from my C6603 using Tapatalk

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is it just 'dok dok' or is it 'dok dok dok dok dok dok (ad naseum)'?

 

does the speed of the doking change? if yes, does the interval between doks change as you change road speed?

 

is it only in a straight line or only when going around corners or both?

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xD

 

The interval speeds up as my car speeds up, yes :). Weirdly enough, it doesn't 'dok' at speed when not accelerating.

 

Dok dok dok dok dok dok et nauseum

 

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That's bad, speed related noise but only under load.

 

What about the cornering Tink asked about.

 

Sounds like the diff to me.

I had that after I got an LSD fitted, turns out Quaife dropped my crown wheel.

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I was wondering a banjaxed DMF but he says he had that changed avec clutch last year. Diff might be possible but ive never heard of a diff going in a standard 1.9 PD, let alone the lower tuned ones.

 

CV joint?

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I'll try in cornerin this afternoon, but I don't think so. It does indeed stop making the sound if I stop pressing the throttle. It's quite a soft sound, but noticeable.

 

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Just checked, not in cornering but... 4th and 5th gear from 1900 to around 2400 rpm. Higher rpm anf it goes away. ( or might be drowned out by engine noise).

 

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What are everyone's thoughts on supermarket fuel?  I'm talking petrol if that makes a difference.  I've always used Shell or Esso but now I can get supermarket fuel for under a £1, I'm tempted.

 

I gather it's all the same fuel, just with difference additives.  Is there really much of a difference?

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